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  • ZHANG Mingfang, WU Guofang, WANG Lei
    Journal Of Domestic Animal Ecology. 2024, 45(8): 1-7. https://doi.org/10.3969/j.issn.1673-1182.2024.08.001
    As a pure natural feed additive, lactic acid bacteria preparations are widely used in animal husbandry because of their functions of promoting animal growth, improving the structure of intestinal flora, improving immune function, and being non-toxic, harmless, and low drug resistance. This review aims to highlight the potential value of lactic acid bacteria in pig, poultry, ruminant and aquaculture to replace antibiotics, in order to provide some reference for the application of lactic acid bacteria in animal production.
  • YANG Shaoyan, LIU Hongxiang, CAI Lianshen, ZHANG Yujie, LI Bin, SONG Shanshan, SUN Nana, ZHAO Chenglong, LI Mingyong, LIU Dong
    Journal Of Domestic Animal Ecology. 2024, 45(9): 51-56. https://doi.org/10.3969/j.issn.1673-1182.2024.09.09
    To investigate the cause of caseous exudate in oviducts of growing layers in parts of Shandong,Anhui,Hebei,Ningxia and other regions, bacteria were isolated and cultured from the clinical pathological samples. Morphological,molecular biology,serological,animal regression and drug sensitivity tests for these isolated bacteria were carried out. The results showed that the 13 isolated bacteria were Riemerella anatipestifer, mainly serotype 7, and the OmpA genes had evolved into two branches. The animal regression test could replicate the same clinical symptoms, and the drug sensitivity test showed that the isolated bacteria were more sensitive to florfenicol, doxycycline, spectinomycin and cephalosporins. This study provides a theoretical basis for the isolation and identification of Riemerella anatipestifer from different susceptible hosts and the genetic evolution analysis of strains, and also provides reference for the prevention and control of Riemerella anatipestifer infection in poultry.
  • CHENG Yiyao, YUAN Zhiyu, CHEN Geng, WANG Chunxin
    Journal Of Domestic Animal Ecology. 2024, 45(8): 68-73. https://doi.org/10.3969/j.issn.1673-1182.2024.08.011
    To analyze the advantages and disadvantages of different types of sheep shed environmental monitoring equipment during use, an experimental research on a self-developed multifunctional gas analyzer for livestock and poultry was conducted in terms of the design principles, core technological content, and application. The pros and cons observed during the research and development and application process were then summarized and further optimization concepts and design schemes were proposed. The results show that the first generation of environmental monitoring equipment, due to its fixed nature and limited types of detection data, is more suitable for sheep shed environmental monitoring and early warning; the second-generation equipment, characterized by lightweight and easy operation, is suitable for experiments with small-size data collection and limited types; the third-generation equipment is more suitable for experiments with large-size data collection and multiple types of monitoring.
  • GAO Feng, CUI Yaoming, GUAN Junjun
    Journal Of Domestic Animal Ecology. 2024, 45(10): 1-8. https://doi.org/10.3969/j.issn.1673-1182.2024.10.001
    As a major intestinal nutrient, butyric acid and its derivatives play an important role in maintaining animal intestinal morphology, regulating the environment of animal intestinal flora, and regulating immunity. Previous studies have shown that butyric acid and its derivatives maintain the intestinal microenvironment of animals mainly by  promoting intestinal cell proliferation and affecting intestinal development, maintain the intestinal barrier by improving the expression of relevant proteins in small intestinal epithelial cells, and maintain the homeostasis of the internal environment by regulating the intestinal environment and stimulating the expression of relevant immune proteins. In terms of regulating energy metabolism, butyric acid and its derivatives directively break down to become energy supply, or serve as an energy intake regulator to affect energy metabolism by regulating related genes,mitochondrial synthetic repair and neural circuits. In addition, butyric acid and its derivatives act as signaling molecules in the immune pathway, regulate the gene and protein expression of immune factors, inhibit the proliferation of cancer cells, and improve intestinal immunity. This article mainly discusses the research progress of the mechanism of butyric acid in maintaining animal intestinal health, in order to provide theoretical reference for the development of butyrate products.
  • WANG Zhen, HAN Yongsheng, ZHANG Shufen, FU Long, DING Xinying, MA Shanshan, LI Wei, ZHAO Jinbo, DING Deli, LI Qingying
    Journal Of Domestic Animal Ecology. 2024, 45(9): 1-6. https://doi.org/10.3969/j.issn.1673-1182.2024.09.001
    Livestock and poultry manure is a primary target for agricultural non-point source pollution prevention and control. Biochar prepared from livestock and poultry manure possesses advantages such as a porous structure, rich active groups, and high specific surface area. It can serve as an environmentally friendly, low-cost adsorbent material, offering a new direction for the resource utilization of livestock and poultry manure. This paper reviews the preparation process and modification of livestock and poultry manure-based biochar, as well as its current applications in environmental protection fields such as water pollution control and soil improvement. The existing issues in livestock and poultry manure-based biochar research are discussed, and rational suggestions for the prevention and control of environmental pollution using livestock and poultry manure-based biochar are proposed, providing a theoretical basis for the treatment of waste through waste using livestock and poultry manure.
  • LIAO Yunqiong, KANG Yonggang, CHANG Lili, HU Jianhong
    Journal Of Domestic Animal Ecology. 2024, 45(12): 9-15. https://doi.org/10.3969/j.issn.1673-1182.2024.12.002
    Miscellaneous meal is an important protein feed resource that can be utilized as a substitute for soybean meal. However, it contains a high level of anti-nutritional factors, which limits its application in animal production. Fermentation of miscellaneous meal by microorganisms can improve its nutritional value, reduce the content of anti-nutritional factors, enhance digestibility and absorption in animals, and increase its feeding value. This review summarizes the nutritional value of fermented miscellaneous meal, fermentation processes, and its application in animal production such as swine, poultry, cattle, and sheep. The aim is to provide reference for the effective implementation of reducing the amount of soybean meal in animal feeds. 
  • XIONG Bangjie, HAO Xiaoxia, ZHAO Liangbin, BAI Lin
    Journal Of Domestic Animal Ecology. 2024, 45(12): 1-8. https://doi.org/10.3969/j.issn.1673-1182.2024.12.001
    The rapid development of intensive animal husbandry has contributed to an increasing amount of organic waste from livestock and poultry. The traditional anaerobic fermentation process for producing methane is challenging to integrate into a circular economy and carries the risk of contributing to the greenhouse effect. Research on anaerobic fermentation technology for the production of acid from organic waste from livestock and poultry is of great significance for achieving a circular economy in animal husbandry. This article briefly introduces the mechanism of short-chain fatty acid production during anaerobic fermentation and the factors that affect the yield of short-chain fatty acids, and summarizes the principles and methods for increasing the yield of short-chain fatty acids, namely, the principle is to enhance the hydrolysis stage and inhibit the methane production stage, promote the rapid production of short-chain fatty acids, and reduce the consumption of short-chain fatty acids. Pretreatment of fermentation substrates and use of additives are common methods for increasing the yield of short-chain fatty acids in current research. Heat treatment, ultrasonic treatment, freeze-thawing, acid-base treatment, enzyme treatment, etc. can all increase the yield of short-chain fatty acids. Sodium 2-bromoethanesulfonate, biochar, and some broad-spectrum antibiotics are also used to increase the yield of short-chain fatty acids. This article will provide a reference to or point out new research directions for colleagues engaged in this field in the future.
  • ZHANG Xiaoting, PENG Zhenzhen, GUO Mali, YUAN Chaohai, CAI Yafei, ZHANG Wei
    Journal Of Domestic Animal Ecology. 2024, 45(8): 8-15. https://doi.org/10.3969/j.issn.1673-1182.2024.08.002
    This study aimed to investigate the genetic diversity of local cattle breeds. In this experiment, blood and hair samples were collected in different regions from Wannan cattle, Leiqiong cattle, Naqu yak and Haizi buffalo, and genomic DNA was obtained. mtDNA COI, Cytb and D-loop genes were amplified by conventional PCR technique, and barcode sequences were obtained by Sanger sequencing, and then their genetic information was explored. The results showed that the A/T content of the mitochondrial genes of the four cattle species were significantly higher than the G/C content, with a significant anti-G bias, and all of them showed high genetic diversity, among which the Naqu yak was particularly outstanding. The use of COI and Cytb protein codons also showed a certain preference. The NJ phylogenetic tree constructed based on Cytb gene showed the best performance and was able to cluster the four cattle species better, which was more suitable for the exploration of phylogenetic relationships in this paper.
  • SHI Shengqi, LIU Ruibing, YUAN Huan, ZHANG Yuli, CHU Guiyan, CAI Chuanjiang
    Journal Of Domestic Animal Ecology. 2025, 46(3): 1-8. https://doi.org/10.3969/j.issn.1673-1182.2025.03.001
    Gamma-aminobutyric acid (GABA) is an important small molecule non-protein amino acid that serves as a vital neurotransmitter. It plays a significant role in promoting animal growth, regulating appetite and providing stress resistance. Additionally, GABA has been found to be essential in modulating the functions of ovarian granulosa cells (GCs). Granulosa cells are the primary somatic cell population in the ovaries of female animals, and their physiological functions, such as the synthesis of steroid hormones, proliferation, and apoptosis, affect follicular growth and atresia. Research has demonstrated the presence of GABA binding affinity sites on ovarian granulosa cells, indicating that GABA can directly participate in the synthesis of estrogen and progesterone through its receptors. Furthermore, upon binding to its receptors, GABA may also indirectly regulate ovarian granulosa cells via the hypothalamic-pituitary-ovarian (HPO) axis and the adenylate cyclase-cAMP signaling pathway. This review aims to present the research history and current advancements related to GABA and discuss the specific effects of GABA on ovarian granulosa cells and the potential regulatory mechanisms involved, as well as contemplate future research directions. The goal is to provide a theoretical basis for the in-depth study of GABA's role in the regulation of animal reproduction.
  • TIAN Min, HAN Chengming, LIU Kun, HE Dong, LI Yifan, ZHU Yifan, SHI Huaiping, LI Cong
    Journal Of Domestic Animal Ecology. 2024, 45(10): 36-42. https://doi.org/10.3969/j.issn.1673-1182.2024.10.006
    The aim of this study was to investigate alterations in blood physiological and biochemical parameters of Xinong Saanen dairy goats at different lactation stages and the correlations among these parameters to reflect the physiological and metabolic status and overall health conditions of dairy goats at different lactation stages. Blood samples from 150 Xinong Saanen dairy goats at different lactation stages were collected to determine their blood physiological and biochemical indicators for correlation analysis, in order to explore the influence of non-genetic factors on blood biochemical indicators in Xinong Saanen dairy goats. The findings indicated that: (1) lactation stage significantly influenced various blood parameters such as total protein (TP), albumin (ALB), globulin (GLB), albumin/globulin ratio (A/G), glucose (GLU), total cholesterol (TC), and triglyceride (TG) in Xinong Saanen dairy goats. (2) Significant correlations were observed among TP and GLB, ALB and A/G, ALB and BUN, A/G and GLB, A/G and GLU at different lactation periods (P<0.05). Blood biochemical indicators are significantly affected by lactation periods, and the significant correlations have been observed among the blood biochemical indicators in dairy goats. These findings comprehensively reflect the health and physiological status of dairy goats, providing theoretical references for improving goat milk quality, adjusting nutritional supply, and managing goat farms.
  • ZHANG Yifan, NIE Xinyu, LIU Kexin, LIU Kexin, MENG Chen, AO Changwei
    Journal Of Domestic Animal Ecology. 2024, 45(12): 23-29. https://doi.org/10.3969/j.issn.1673-1182.2024.12.004
    The purpose of this experiment was to study the effects of probiotic fermented Chinese herbal medicine preparation on growth performance and pork quality. Thirty piglets weaned at 30~40 days were divided into three groups, with 10 piglets in each group. 0.2% and 0.4% probiotic fermented Chinese herbal medicine preparation were added to the basal diets of test groups Ⅰ and Ⅱ respectively, and the control group was fed the basic diet. The test period lasted for 160 days. The results showed that the addition of probiotics fermented Chinese herbal medicine preparation could significantly increase the average daily gain of pigs (P<0.05), the average daily feed intake decreased but with insignificant difference(P>0.05). The feed-to-weight ratio, diarrhea rate and constipation rate all decreased significantly (P<0.05). The pork quality after slaughter showed that there was no significant difference in pork color, pH and shear force between the three groups (P>0.05). The marbling scores of pork in test group I and test group II were significantly higher than that in control group (P<0.05). The drip loss of pork in group I and group II was significantly lower than that in the control group (P<0.05). The cholesterol content in group II decreased significantly (P<0.05) and the intramuscular fat content increased significantly (P<0.05) compared with the control group. The contents of myristic acid and palmitic acid in pork in the experimental group significantly decreased (P<0.05), while the contents of stearic acid, heptadecanoic acid, palmitoleic acid, oleic acid, linoleic acid and arachidonic acid significantly increased (P<0.05). The contents of n-decanoic acid, lauric acid, ginkgo acid and eicosapentaenoic acid were not significantly different (P>0.05). The results show that the preparation can improve the growth rate of pigs, reduce the feed-wight ratio, improve the utilization rate of feed, the health status of pigs as well as the quality of pork.
  • HE Xiaona, JIN Lu, LI Shengli, ZHANG Chongzhi, ZHANG Chunhua, GAO Ruiling, SUN Haizhou
    Journal Of Domestic Animal Ecology. 2025, 46(1): 1-8. https://doi.org/10.3969/j.issn.1673-1182.2025.01.001
    Fetal  programmed  development  refers to the short-  and  long-term  effects  that maternal stressors can have on offspring during the developmental stages of the fetus in utero. The physiological development and growth environment of the intrauterine fetus not only determines the viability of the newborn litter, but is also closely related to both animal performance and the immune response to animal diseases. Studies have shown that fetal developmental patterns may be adjusted by epigenetic modifications when the environment for fetal development is disturbed during  the  critical  window  of gestation.  The  study  of potential,  positive  and  adaptive  fetal programming has significant implications for the sustainability of animal husbandry. Therefore, this paper reviews the use of animal models to explore the effects of various maternal “stressors” on fetal growth and development, particularly the effects of assisted reproductive technologies, maternal nutrition and microorganisms on pregnancy, in order to further explore the potential mechanisms underlying fetal programming.
  • DING Xiaoning, LI Keyao, GAN Yating, PANG Shuo, LI Zhechen, XIE Xianjie, GAN Qianfu, FANG Shaoming
    Journal Of Domestic Animal Ecology. 2024, 45(9): 7-15. https://doi.org/10.3969/j.issn.1673-1182.2024.09.002
    The microbiota-gut-brain axis is involved in different physiological processes such as metabolism, immune responses, and behavioral responses which exerts important effects on health and growth. Herein, the interactions of microbiota-gut-brain axis of Hu sheep was investigated by multiomics in present study. The results of 16S rRNA gene sequencing analysis showed that Firmicutes, Bacteroidetes, Christensenellaceae_R-7_group, Enterococcus, Oscillospiraceae_UCG-002, and Prevotellaceae_UCG-004 were the dominant microbial taxa in the gut microbiota of Hu sheep. In combination with the colon and brain transcriptome analysis, it is found that estrogen signaling pathway may be the key functional pathway that contributes to the establishment of the microbiota-gut-brain axis of Hu sheep. Additionally, it was also found that Eubacterium and Ruminococcus may be the key bacteria which could modulate the microbiota-gut-brain axis of Hu sheep. These findings could provide basic knowledge for improving the temperament, behavior, and production performances of Hu sheep through modulating the microbiota-gut-brain axis by nutritional intervention.
  • ZHANG Yao, WANG Qiting, ZHANG Cunfang, Duojiecaidan , CAI Weijie, HAO Jiahui, QIN Minxin
    Journal Of Domestic Animal Ecology. 2024, 45(10): 15-21. https://doi.org/10.3969/j.issn.1673-1182.2024.10.003
    Tibetan sheep are mainly distributed in the Qinghai-Tibet Plateau and its adjacent areas, with a distinctive external appearance. About 90% of the total population are mixed-colored, while pure white and pure black individuals are rare.  In order to study the relationship between SNPs of ASIP gene and the heredity of Tibetan wool color, this study used pooled sequencing and PCR-SSCP methods to detect the polymorphisms of seven exons of the ASIP gene in four ecological types of Tibetan sheep populations, including the plateau type, the Oula type, the Zhashijia type, and the black Tibetan sheep. Results showed that five mutation sites were found, including g.49396C>G in exon 3 and g.76594G>C, g.76715T>A, g.76732C>G, and g.76811C>A in exon 7. The mutation site g.76715T>A caused the conversion of cysteine to serine at position 126 (C126S). The mutation site g.49396C>G had three genotypes (CC, CG, and GG) in all four ecological types of Tibetan sheep, with the minimum mutation probabilities of 0.416, 0.234, 0.261, and 0.307, and the polymorphic information contents of 0.485, 0.358, 0.386, and 0.424, respectively, indicating moderate polymorphism. Except for the Oula type, the plateau type, black Tibetan sheep, and Zhashijia type were all in Hardy-Weinberg equilibrium. The results showed that the g.49396C>G and g.76715T>A missense mutations in ASIP gene are important sites regulating the inheritance of Tibetan wool color, which can serve as potential genetic markers for the breeding of Tibetan wool color.
  • HOU Lina, QI Zhitao, Jigemude, CHEN Jiulian, LIU Yume, LI Xiaoyan, JU Hongli, LI Chao, LIU Dongxia, WANG Zihan, CHEN Jian
    Journal Of Domestic Animal Ecology. 2025, 46(1): 113-119. https://doi.org/10.3969/j.issn.1673-1182.2025.01.017
    Senecavirus A, an emerging pathogen responsible for swine vesicular disease, exhibits notable evolutionary and transmissible characteristics. when infected in pigs, it manifests clinical symptoms resembling those of foot-and-mouth disease, resulting in significant economic losses to the swine industry. In recent years, outbreaks of SVA infections have shown an upward trend in Brazil, the United States, and China. Currently, China still lacks standardized diagnostic methods and commercially available vaccines for SVA, underscoring the urgent need for further research so as to prevent its spread and transimission in china. This article provides a comprehensive review of the latest progress in SVA epidemiology, diagnostic approaches, and vaccine development, aiming to offer robust scientific support and practical insights for controlling SVA transmission and formulating effective prevention strategies.
  • GONG Ting, HOU Wenjing, MA Hui, ZHENG Ming
    Journal Of Domestic Animal Ecology. 2024, 45(8): 87-91. https://doi.org/10.3969/j.issn.1673-1182.2024.08.014
    Canine parvovirus infection is one of the important causes of enteritis and death in young dogs, posing significant harm to dogs of all breeds and age groups. It is of great significance to assess the infection status of dogs through specific biomarkers and complementary detection methods, and implement rapid diagnosis and treatment plans for infected dogs. This article summarizes the research progress on biomarkers and detection methods related to canine parvovirus infection both domestically and internationally, aiming to provide references for the detection and treatment of canine parvovirus disease.
  • CHEN Dechun, YANG Falong, HUANG Jian, JI Wenhui, YUE Hua, MA Shaojing, TANG Cheng
    Journal Of Domestic Animal Ecology. 2024, 45(8): 92-96. https://doi.org/10.3969/j.issn.1673-1182.2024.08.015
    Veterinary Clinical Diagnostics is a laboratory course that involves various skills and abstract operational techniques. This course has traditionally been taught using conventional teaching methods for many years. However, in the flipped classroom approach, the textbook content is divided into different modules, and micro-videos are created to explore the new “four-step method”. This method integrates information technology and autonomous learning. Teaching practice has found that this approach greatly improves students' awareness of active learning of professional theoretical knowledge and active mastery and improvement of operational skills. It also provides new ideas and references for improving the quality and reform of undergraduate experimental teaching.
  • ZHAO Li, Solang Quji, Tsering Norbu, Sinian Lausanne, Jigme Gatso, Basan Juza
    Journal Of Domestic Animal Ecology. 2024, 45(8): 22-27. https://doi.org/10.3969/j.issn.1673-1182.2024.08.004
    To explore the effects of diets with different concentrate to forage ratios on the lactation performance, digestion and metabolism, rumen fermentation parameters and immunity of Jersey cattle in Tibet, the experiment adopted a single-factor completely randomized block trial design, with different concentrate to roughage ratios (group Ⅰ, 40∶60;group Ⅱ, 50∶50, and group Ⅲ, 60∶40). Results show:(1) The dry matter intake, milk production and milk protein content of dairy cows in group Ⅲ and Ⅱ were significantly higher than those in group Ⅰ (P<0.05). The ratio of feed to milk in group Ⅱ was significantly lower than that in group Ⅲ and Ⅰ (P<0.05). The milk fat rate of group Ⅲ and group Ⅱ was significantly lower than that of group Ⅰ (P<0.05). (2) The apparent digestibility of DM, NDF, ADF and CP in group Ⅲ and group Ⅱ was significantly higher than that in group Ⅰ (P<0.05). (3) The content of TVFA and the proportion of propionic acid in the rumen fluid of dairy cows in group Ⅲ were significantly higher than those in group Ⅱ (P<0.05), and that of group Ⅱ was significantly higher than group Ⅰ (P<0.05). The contents of NH3-N and MCP in group Ⅲ and Ⅱ were significantly higher than those in group Ⅰ (P<0.05). (4) The TP content of dairy cows in group Ⅲ and Ⅱ was significantly higher than that in group Ⅰ (P<0.05). Group Ⅲ and group Ⅱ had significantly higher content of serum IgA than group Ⅰ (P<0.05). IL-4 content in group Ⅰ was significantly lower than that in other two groups (P<0.05). The level of TNF-α in group Ⅰ was significantly higher than that in group Ⅲ and Ⅱ (P<0.05).In summary, diets with concentrate to roughage ratio of 50∶50 and 60∶40 can significantly increase the milk production of the Jersey cattle, improve the digestibility of nutrients, and improve its immunity and anti-inflammatory ability.
  • LI Linfei, LIU Shuo, NIU Shihua, LIAO Xindi, XING Sicheng
    Journal Of Domestic Animal Ecology. 2024, 45(8): 53-61. https://doi.org/10.3969/j.issn.1673-1182.2024.08.009
    In order to study the effects of different forms of Microplastics (MP) on the migration of heavy metals from livestock and poultry manure in soil, different forms of Polypropylene (PP) were selected as raw materials for Microplastics, and layer hen's manure was taken as the manure source model. Two kinds of micro-plastic fragments with different sizes and two kinds of micro-plastic fibers with different diameters were added into the experimental soil with the proportion of 1% and 10% respectively. The results showed that different forms of microplastics had different effects on the migration of different heavy metals. The microplastics in soil inhibited the migration of Cu, and the smaller the form, the stronger the inhibition. The optimal absorption effect of Cu was observed in small fragmented plastics. Additionally,the microplastic in soil accelerated the migration of Zn and Cd,but exerted little impact on the migration of Pb. The soil electrical conductivity was slowed down under the influence of fibrous microplastics. 
  • REN Tingting, REN Sirui, HAN Bing, JIANG Fangfang, LIU Mingjun, HE Sangang
    Journal Of Domestic Animal Ecology. 2024, 45(8): 16-21. https://doi.org/10.3969/j.issn.1673-1182.2024.08.003
    In order to study the relationship between SNPs polymorphism of HMX1 gene and its enhancer mutation and the ovine congenital microtia of sheep, the polymorphism of enhancer and exon in HMX1 gene of 170 Altay sheep was detected by agarose gel electrophoresis combined with PCR sequencing technology. The results showed that 24 SNPs were found in exon 1 and exon 2 of HMX1 gene, and A557T was significantly associated with congenital microtia in sheep(P<0.05); 76bp replication was found in HMX1 gene enhancer, which was significantly associated with congenital microtia in sheep (P<0.01). The results showed that the replication of 76 bp in enhancer of HMX1 gene is the causal mutation of congenital microtia in Altay sheep, which could be used as a molecular marker to eliminate congenital microtia in Altay sheep.
  • YAO Dawei, GUO Xiaofei, LIU Yu, LI Yupeng, CHEN Longbin, ZHANG Jinlong, ZHANG Xiaosheng
    Journal Of Domestic Animal Ecology. 2025, 46(1): 17-25. https://doi.org/10.3969/j.issn.1673-1182.2025.01.003
    This study aims to investigate the effects of the fat mass and obesity-associated gene (FTO) on the expression of lipid metabolism-related genes and triglyceride (TAG) synthesis in mammary epithelial cells (DMECs) of dairy goats through overexpression and interference techniques. The complete coding sequence (CDS) of the FTO gene in the mammary tissue of diary goats (Capra hircus) was cloned, and an FTO overexpression vector was constructed. Additionally, small interference RNA (siRNA) targeting FTO were designed and synthesized. RT-qPCR was used to detect changes in the expression of lipid metabolism-related genes and triglyceride content in DMECs after overexpressing or interfering with the FTO gene. The results indicated that the full length of the FTO gene CDS region in dairy goat was 1 518 bp, with sequence homology of 99%, 97% and 96% to sheep (Ovis aries) (NM_001104931.1), cattle (Bos taurus) (NM_001098142.1) and buffalo (Bubalus bubalis) (XM_006043050.4), respectively. Overexpression of FTO in DMECs significantly upregulated the mRNA levels of sterol-regulatory element binding protein 1 (SREBF1), fatty acid synthase (FASN), and diacylglycerol O-acyltransferase 2(DGAT2) (P<0.05), while significantly downregulating the expression levels of triglyceride hydrolysis-related genes such as hormone-sensitive lipase (HSL) (P<0.05). Furthermore, the TAG content in the cells significantly increased. Conversely, interference with FTO in DMECs yielded opposite results. In conclusion, FTO gene plays an important role in regulating lipid metabolism in DMECs of dairy goats, providing a theoretical basis for improving the regulatory network of lipid metabolism in mammary gland of dairy goat. 
  • DIAO Hui, LU Yingying, LI Shuwei, TANG Wenjie, HE Peng, CAI Meiya, ZHOU Mengjia, YAN Jiayou, HUANG Chongbo, HE Zhiping, LI Mingzhou, SUN Zhihong
    Journal Of Domestic Animal Ecology. 2025, 46(1): 44-49. https://doi.org/10.3969/j.issn.1673-1182.2025.01.008
    The study aimes to investigate the effects of dietary copper sources and levels on the growth performance and immune function of weaned piglets. A total of 120 Duroc × Landrance × Yorkshire (DLY) weaned piglets with an initial average body weight of 7.40 ± 1.1 kg aged at 28 days were divided into five groups, with six replicates per treatment and four pigs per replicate, based on the principle of similar weight and balanced male and female ratio and a completely randomized block design. The dietary treatment groups were as follows: control group, basal diet; 20 mg/kg copper citrate group (basal diet + 20 mg/kg copper citrate); 100 mg/kg copper citrate group (basal diet +100 mg/kg copper citrate); 20 mg/kg copper sulfate group (basal diet + 20 mg/kg copper sulfate) and 100 mg/kg copper sulfate group (basal diet +100 mg/kg copper sulfate. The whole trial lasted for 28 days. The results showed that no differences were observed in the average daily gain (ADG), average daily feed intake (ADFI) and feed-to-gain ratio (F/G) among the five groups during the experimental period (P>0.05). However, compared to the control group, the addition of 20 mg/kg copper citrate to the diet significantly elevated the levels of serum immunoglobulin G (IgG), immunoglobulin A (IgA), interleukin 1 beta (IL-1β), interleukin 6 (IgA) and interleukin 10 (IL-10) (P<0.05). Furthermore, the inclusion of 100 mg/kg copper citrate significantly increased the concentrations of serum IgG, IgA, IL-6, and IL-10 (P<0.05). Similarly, dietary supplementation with 20 mg/kg copper sulfate led to a significant increase in the levels of serum IgG and IL-10 in the piglets (P<0.05) . The colon mucosal IgG concentration significantly increased in the 20 mg/kg copper citrate group and 100 mg/kg copper citrate group (P<0.05), compared with the control group. Additionally, higher concentration of IgA in the colonic mucosa of piglets (P<0.05) was exhibited in other four groups. Besides, the colon mucosal IL-6 level in the 100 mg/kg copper citrate group was significantly higher than that in the control group (P<0.05). In conclusion, the supplementation of 20 and 100 mg/kg of copper citrate in piglet diet effectively enhances the immune function of weaned piglets. 
  • LIU Shujuan, AN Xiaopeng, CAO Binyun
    Journal Of Domestic Animal Ecology. 2025, 46(1): 26-31. https://doi.org/10.3969/j.issn.1673-1182.2025.01.004
    The proliferation of granulosa cells is closely related to the follicular development and atresia. In this experiment, the previous transcriptome sequencing was used to analyze the differentially expressed miRNAs in the ovaries of dairy goat with lambed singleton and fecundity, and it was found that in the ovaries of dairy goat with lambed singleton, miR-486 was differentially expressed. In order to further study the function of miR-486 in ovarian granulosa cells, miR-486 mimic, mimic NC, miR-486 inhibitor, inhibitor NC were synthesized and transfected into primary ovarian granulosa cells in vitro by using RT-qPCR, Western blot, CCK-8, EdU methods to detect the regulation of miR-486 on granulosa cell proliferation and PI3K/AKT/mTOR pathway. The results showed that miR-486 significantly inhibited the viability and proliferation of granulosa cells, and at the same time inhibited the expression of PI3K total protein and AKT and mTOR phosphorylated proteins. Therefore, miR-486 inhibits the proliferation of granulosa cells by inhibiting the PI3K/AKT/mTOR pathway.
  • WANG Meng, DU Xinze, YANG Chaoqun, JIA Hongru, ZAN Linsen, LI Fuqiang, ZHANG Taoping, YANG Wucai
    Journal Of Domestic Animal Ecology. 2024, 45(8): 41-46. https://doi.org/10.3969/j.issn.1673-1182.2024.08.007
    The experiment was to explore the effect of stachyose on semen cryopreservation of Qinchuan bull. Different concentrations of stachyose (0 mg/mL, 20 mg/mL, 40 mg/mL, 60 mg/mL and 80 mg/ml) were supplemented to the frozen diluent of bull semen, then the sperm motility, membrane integrity, acrosome integrity, mitochondrial activity and antioxidant properties related indicators of frozen-thawed semen in Qinchuan bull were tested. The results showed that 40 mg/mL stachyose treatment significantly (P<0.05) improved sperm motility (43.83%) and acrosome integrity (78.70%) after freezing-thawing, compared with the control group; membrane integrity and mitochondrial activity were enhanced significantly with the increase of stachyose concentration(P<0.05), but the membrane integrity was not significantly different between the different concentrations of stachyose (P>0.05); in addition, the activities of GSH-Px enzyme and CAT enzyme were significantly increased(P<0.05), and the content of MDA significantly reduced (P<0.05)  in the 40 mg/mL stachyose. In summary, the 40 mg/mL stachyose treatment significantly improves the quality and antioxidant capacity of freezing-thawing semen, and has a good preservation effect on the frozen semen in Qinchuan bull.
  • YU Jie, AO Yingnan, YANG Yu, WANG Lixia, YE Shengqiang, GONG Ping, CHEN Xing, WANG Dingfa
    Journal Of Domestic Animal Ecology. 2024, 45(10): 22-28. https://doi.org/10.3969/j.issn.1673-1182.2024.10.004
    The purpose of this study was to determine the appropriate methionine requirement of Wuqin 10 ducks aged from 1 to 4 weeks, and to provide reference for the scientific formulation of diets and the establishment of feeding standards. A total of 280 one-day-old commercial Wuqin 10 ducks (equal numbers of males and females) were randomly divided into 5 groups, with 4 replicates per group and 14 ducks per replicate. The ducks in the five groups were fed diets containing 0.28%, 0.36%, 0.44%, 0.52% and 0.60% methionine, respectively, for a 28-day experiment. The results showed that: (1) dietary methionine levels significantly affected the final weight, average daily weight gain and average daily feed intake of 1-4-week-old Wuqin 10 ducks (P<0.05). The 0.36% and 0.44% methionine groups exhibited significantly higher values compared to the 0.28% methionine group, while there was no significant effect on feed to gain ratio (P>0.05). (2) The semi-diving length of 0.36% and 0.52% methionine groups was significantly higher than that of the 0.44% methionine group (P<0.05). The obligue body length and tibial length of the 0.52% methionine group were significantly higher than those of the 0.28% methionine group (P<0.05). The chest width of the 0.36%, 0.44% and 0.52% methionine groups were significantly higher than that of the 0.28% methionine group (P<0.05). (3) There was no significant difference in organ index among groups (P>0.05). (4) The serum albumin, globulin and alanine transaminase levels of the 0.60% methionine group were significantly higher than those of the 0.44% and 0.52% methionine groups (P<0.05). The aspartate aminotransferase, uric acid and total cholesterol levels of the 0.28% methionine group were significantly higher than those of the 0.44% and 0.52% methionine groups (P<0.05). Methionine levels had no significant effects on the total protein, alkaline phosphatase and triglyceride levels (P>0.05). (5) Dietary methionine levels showed a significant quadratic correlation (P<0.05) with 28-day body weight, average daily weight gain, average daily feed intake, alanine aminotransferase and triglyceride of the 1-4-week-old Wuqin 10 ducks. The appropriate dietary methionine levels were 0.416%, 0.423%, 0.414%,0.391% and 0.453%, respectively. In conclusion, the optimal dietary methionine level for 1-4-week-old Wuqin 10 ducks is 0.42% under the conditions of this experiment.
  • MA Lihua, MA Xuehu, WANG Nana, XU Xiaofeng, MA Yun, MA Yanfen
    Journal Of Domestic Animal Ecology. 2024, 45(10): 86-91. https://doi.org/10.3969/j.issn.1673-1182.2024.10.013
    Mastitis in dairy cows will affect the health of cattle and milk quality, thus restricting the development of dairy industry. Therefore, a clear understanding of the pathogenesis of cattle mastitis is helpful for its precise prevention and control. Recent studies have shown that the endogenous entero-mammary pathway in dairy cows plays an important role in inducing mastitis, i.e. enterogenous mastitis. This article reviews the pathogenesis of enterogenous mastitis in dairy cows and the prevention and control mechanism of microecological agents and plant extracts, in order to provide new ideas for the prevention and control of enterogenous mastitis in dairy cows.
  • JIANG Jinfeng, XIE Yang, ZHNG Yan, ZHOU Feng, LAN Zhongqi, SHEN Shuang, LUO Qingping, WANG Jiaxiang, LI Peng
    Journal Of Domestic Animal Ecology. 2025, 46(3): 15-21. https://doi.org/10.3969/j.issn.1673-1182.2025.03.003
    The cecum is the main organ where the body breaks down dietary fiber and encourages nutrient fermentation, which has a sizable microbiological population. Several species' cecal microorganisms have been examined and studied, but no such research on the African ostrich has been documented. Hence, in this investigation, the diversity of microorganisms in the caecum of African ostriches at 7, 30, 60, and 180 days of age was examined using metagenomics sequencing technology. The results showed that the flora in the caecum of African ostriches was distributed in 9 phyla, 16 classes, 29 orders, 58 families and 128 genera. With increasing age, the abundance and diversity of microbes in the cecum first increased and then decreased, with the microbial abundance peaking at 60 days of age and microbial diversity being highest at 30 days of age. At the phylum level, Firmicutes and Proteobacteria were the most dominant phyla at 7, 60 and 180 days of age, while the dominant phyla at 30 days of age were Firmicutes, Tenericutes and Bacteroidetes. At the genus level, the dominant bacteria in the cecum of different ages were different. Acinetobacter, Escherichiacoli-Shigella, and Akkermania had the highest abundance at the age of 7 days. Anaeroplasma and Bacteroides were the most abundant at the age of 30 days, Acinetobacter and Pseudomonas were the dominant bacteria at 60 and 180 days old, respectively. There were different bacterial groups in the cecum of each age group. At 7, 30, 60, and 180 days of age, there were 28, 24, 8 and 6 different bacterial groups, respectively, and the number of bacterial groups gradually declined with age. In conclusion, African ostriches have complex and diverse cecal microorganisms, and as they mature, the microbial composition and dominating species will shift. This offers a theoretical foundation for future studies on how aging affects gut microorganisms and how they interact with the body.
  • SHI Xiaoqing, WANG Xiaolan, XU Yingying, GUAN Yu, YU Jinlong, ZHANG Yang, WANG Hongliang
    Journal Of Domestic Animal Ecology. 2024, 45(10): 77-85. https://doi.org/10.3969/j.issn.1673-1182.2024.10.012
    In this study, the carbon and nitrogen footprints of pig farming, manure treatment and rice cultivation processes in a large-scale pig farm system were analysed for the characteristics using the life cycle assessment method (baseline scenario S0), and emission reduction measures such as low protein diets (S1), manure and urine acidification (S2), biogas utilization (S3), side-deep fertilization of rice (S4), organic-inorganic application in combination (S5) and integrated technologies (S6) were compared to study their effects on environmental emissions of farm systems. The results showed that the carbon footprint of the industrial pig farm system was 332.9 kg CO2-eq·FU-1 and the nitrogen footprint was 4.55 kg Nr·FU-1. Among them, the manure storage segment had the highest contribution of carbon and nitrogen footprints, accounting for 29% and 50%, respectively. The application of individual technologies (S1 to S5) in each link was able to reduce carbon emissions by 6.44% to 11.25% and nitrogen emissions by 6.51% to 30.37%; the low protein diet technology (S1) and manure and urine acidification technology (S2) were the most effective in reducing the carbon and nitrogen footprints of the farm system, at 11.25% and 30.37%, respectively; the integrated technology (S6) was able to reduce the carbon and nitrogen footprint by 35.39% and 51.66%, respectively. In conclusion, pig farms should focus on feed nutrition and manure and urine management processes so as to reduce carbon and nitrogen emissions of the farm system and achieve green development.
  • GE Hao, WAN Fachun, GAO Qian, XIAO Dingfu
    Journal Of Domestic Animal Ecology. 2024, 45(10): 9-14. https://doi.org/10.3969/j.issn.1673-1182.2024.10.002
    Cadmium (Cd) is widely distributed. It is highly toxic and difficult to degrade. Long-term consumption of cadmium contaminated feed will exert toxic effects on livestock and poultry's organs, such as liver, kidney, lung, etc. It will also affect their growth, development, and immune function. This paper provides an overview of the toxic mechanism of apoptosis and oxidative stress induced by cadmium poisoning in animals, and summarizes the nutritional strategies to alleviate cadmium poisoning in livestock and poultry. It aims to provide a reference for future research on alleviating cadmium poisoning in livestock and poultry.
  • REN Zhihui, LI Jungang, ZHANG Qiuyun, LIANG Huifeng, LI Fuying, GUO Linying
    Journal Of Domestic Animal Ecology. 2024, 45(8): 62-67. https://doi.org/10.3969/j.issn.1673-1182.2024.08.010
    In recent years, the beef cattle industry in China has shown relatively low comparative benefits. Influenced by the non-normal linkage of pork and beef market prices, as well as the generally low production efficiency of local breeds, the supportive effect on the development of the beef cattle industry has gradually weakened. This article analyzes the new characteristics of China's beef cattle industry under the new normal, explores a new model for differentiated development of local breeds to support the beef cattle industry, and proposes key measures for the high-quality differentiated development of local beef cattle in China.
  • HAN Leiyingjie, YAO Weiwei, CHENG Min, WENG Yunan, QU Hexuan, LUO Jun
    Journal Of Domestic Animal Ecology. 2025, 46(1): 37-43. https://doi.org/10.3969/j.issn.1673-1182.2025.01.006
    This study aims to investigate the effects of replacing corn with wheat in the concentrate feed on the growth and development of Saanen dairy goat lambs and their serum biochemical indices. A total of 80 newborn lambs (40 males and 40 females) with good homogeneity were selected and randomly divided into four groups based on gender: M and M2 for male lambs, and F1 and F2 for female lambs. The M1 and F1 groups were fed the control concentrate feed formulation 1, while the M2 and F2 groups were fed the experimental concentrate feed formulation 2, which replaced 30% of the corn with wheat. The body weight of the lambs was measured every two weeks, while body measurements were taken every four weeks, and blood samples were collected for serum biochemical analysis. The results indicated that replacing 30% of corn with wheat in the concentrate feed did not significantly affect the average daily weight gain, body measurements, or serum biochemical indices of the lambs (P>0.05). However, the gender of the lambs influenced their growth and development, with male lambs exhibiting a higher average daily weight gain compared to female lambs (P<0.05). There were no significant differences in body measurements or serum biochemical indices between the different genders (P>0.05). In conclusion, when wheat prices are low, it is feasible to replace 30% of corn with wheat in the concentrate feed for dairy goat lambs, which will not affect their normal growth and development. And in the meantime, it can save the cost.
  • WANG Yongcai, WANG Shang, GAO Tengyun, TIAN Yadong, LI Guoxi, SUN Guirong, KANG Xiangtao
    Journal Of Domestic Animal Ecology. 2025, 46(1): 70-76. https://doi.org/10.3969/j.issn.1673-1182.2025.01.011
    A total of 4 328 research papers on animal welfare from 2001 to 2022 were collected in the CNKI database, and subsequent visual analysis using knowledge graph software were conducted to clarify the current status and hot topics of animal welfare research in China, and its development trends was explored as well. The results indicate that animal welfare research in China can be roughly divided into three stages: accelerated start, steady development, and transformation, showing a mature and stable development trend. The research atmosphere for animal welfare is not strong, with a limited number of annual publications, a small number of professional researchers, and small and loosely connected research teams. The research hot topics  mainly focus on trade barriers, animal welfare legislation, laboratory animals, animal ethics, animal welfare education, animal welfare technology, and evaluation. According to the results, environmental enrichment, welfare technology, animal ethics, and the impact of animal welfare on biosafety and growth performance will be the research priorities in the field of animal welfare in China for a certain period of time in the future. Further efforts are needed to strengthen research and practice in animal welfare legislation, national education, and professional education.
  • HU Ziyi, LI Keqiang, LI Xianglong
    Journal Of Domestic Animal Ecology. 2024, 45(12): 16-22. https://doi.org/10.3969/j.issn.1673-1182.2024.12.003
    The correlation between UCP gene SNP and the fatty acid traits of Bashang long-tailed chickens was clarified, which laid a foundation for molecular marker-assisted breeding of fatty acid traits in Bashang long-tailed chickens. Direct sequencing was used to detect UCP gene SNP in 54 longtail chickens with measured muscle fatty acids. The general linear model in SPSS 26.0 software was used to analyze the correlation between SNP and the fatty acid traits of longtail Bashang chickens. Through direct sequencing, a total of 10 SNP sites were detected on the UCP gene fragment of Bashang long-tailed chicken and 10 sites all conformed to the Hardy-Weinberg equilibrium (P>0.05). 3 loci contained 3 genotypes, and 7 loci contained 2 genotypes. The correlation analysis results showed that the genotypes of g.224A>T, g.284C>T, g.329G>A, g.409T>C and g.450G>A were not significantly correlated with fatty acid content (P>0.05). The genotypes of g.195A>G were significantly correlated with palmitoleic acid, γ-linolenic acid and myristic oleic acid (P<0.05), g.398C>T genotypes were significantly correlated with myristic oleic acid, pearlescent acid and DH-γ-linolenic acid (P<0.05), g.399A>G genotypes were significantly correlated with myristic acid (P<0.05), and g.431C>T genotypes were significantly correlated with myristic oleic acid, pearlescent acid and DH-γ-linolenic acid (P<0.05); g.434C>T genotypes were significantly associated with antioleic acid (P<0.05). Therefore it is concluded that the five loci are significantly correlated with the content of different types of fatty acids (P<0.05), which can serve as the candidate markers for molecular marker-assisted breeding of Bashang long-tail chicken.
  • DU Bingqin, HU Honghong, CAI Bei, MA Yanfen, HAN Liyun, ZHANG Liqiang, MA Yun
    Journal Of Domestic Animal Ecology. 2024, 45(12): 30-36. https://doi.org/10.3969/j.issn.1673-1182.2024.12.005
    In order to clarify the effects of different calving seasons, litters and the interactions between calving seasons and litters on lactation performance of Holstein cows, and to provide a theoretical basis for the management of large-scale dairy farms, a total of 276 603 DHI data were collected from four dairy farms in Ningxia from 2019 to 2021, and Wood model was used to fit the lactation curve for different calving seasons (Spring: March to May, Summer: June to August, Autumn: September to November, Winter: December to February), parity (1, 2, 3, 4, 5 to 7) and their interaction. The results showed that the fitness degree (R2) of group lactation curves of Wood model ranged from 0.9326 to 0.9774 in different parities, from 0.9571 to 0.9714 in different calving seasons, and from 0.7777 to 0.9917 in different calving seasons and parity interactions. The parameters of Holstein population lactation curve were extremely affected by parities, calving seasons and the interaction between parity and calving season (P<0.01). The parturient cows reached the peak lactation in 3 months after delivery, which was slightly earlier than that of the primiparous cows, and the peak lactation time was similar in different parities, and the milk yield reached the highest at the 4th parity. This study revealed the lactation rules of Holstein cattle in different calving seasons and parity, which could provide a theoretical basis for the management of large-scale dairy farms.
  • SHAO Guangxue
    Journal Of Domestic Animal Ecology. 2025, 46(5): 1-4. https://doi.org/10.3969/j.issn.1673-1182.2025.05.001
    As an important component of agricultural and rural economy, animal husbandry plays an crucial role in achieving rural revitalization through green development. The paper summarizes the main progress of green development in animal husbandry under the rural revitalization strategy, analyzes the current practical difficulties faced by existing green development in animal husbandry, and proposes several  countermeasures in response to these challenges. The aim is to provide a reference for further promoting the green and highquality development of animal husbandry.
  • LIN Ziwei, LIU Wenchao, JIANG Ping, YU Haibin, ZHAO Zhihui, AN Lilong
    Journal Of Domestic Animal Ecology. 2024, 45(12): 93-96. https://doi.org/10.3969/j.issn.1673-1182.2024.12.014
     The Experiment and Practical Training for Domestic Animal Environmental Hygiene and Pasture Design is designed to equip students with skills in the livestock farm and housing environments monitoring, farm layout, process design, and environmental management and protection methods for animal farms (livestock houses). It emphasizes the ability to promote high-quality and efficient development in animal husbandry. In response to the current teaching status of Experiment and Practical Training for Domestic Animal Environmental Hygiene and Pasture Design and to align with industry needs, a series of reform strategies have been proposed. These strategies focus on enhancing students' practical application abilities while integrating education on the “Three Rural Issues” and ecological civilization throughout the entire teaching process, yielding positive results.
  • HU Hai, WANG Guowen, CHENG Xiao, YANG Yanling, XU Shangrong, JIA Gongxue
    Journal Of Domestic Animal Ecology. 2025, 46(3): 42-49. https://doi.org/10.3969/j.issn.1673-1182.2025.03.007
    The experiment aimed to study the effects of Dorper × Tibetan hybridization on the growth, slaughter performance and meat quality of the offspring. The study conducted hybridization experiments using Dorper sheep and Tibetan sheep as the paternal line and Tibetan sheep as the maternal line. The body weight and body measurement indicators of F1 generation of Dorper-Tibetan sheep ( Duzang F1) were determined and compared to those of Tibetan sheep. In each group, 9 individuals were randomly selected for slaughter experiment, and the indexes of meat quality were assessed. The results showed that the body weight, body length and chest circumference of Dorper × Tibetan F1 were significantly higher than those of Tibetan sheep (P<0.001). Additionally, the pre-slaughter live weight, carcass weight, meat weight, bone weight, slaughter rate, eye muscle area and backfat thickness of Dorper × Tibetan F1 were all significantly greater than those of Tibetan sheep (P<0.001), while the coefficients of the liver, lung and kidney were obviously lower (P<0.05). Except for the shear force of longissimus dorsi (P=0.001) in F1 generation being lower than that of Tibetan sheep (P=0.001), there were no significant differences in the physical properties of the muscle between the two groups. The moisture, crude protein, and ash content of the longissimus dorsi in Dorper × Tibetan F1 decreased significantly, whereas the crude fat content was significantly higher than in Tibetan sheep (P<0.001). Compared to Tibetan sheep, the longissimus dorsi muscle of Duzang F1 showed a decreasing trend in calcium, phosphorus, potassium, and iron content, while zinc and selenium levels increased (P<0.05). The proportions of threonine, valine, methionine, isoleucine, leucine, aspartic acid, and histidine in the longissimus dorsi muscle of Duzang F1 were significantly higher, while the proportions of tryptophan, glutamic acid, serine, and tyrosine were significantly lower (P<0.05). There were no significant differences in the total saturated fatty acid content in the longissimus dorsi muscle; however, the contents of the two main monounsaturated fatty acids, palmitoleic acid and oleic acid, were significantly higher, while the levels of various polyunsaturated fatty acids decreased significantly (P<0.05). These results indicate that Duzang F1 exhibits superior growth and slaughter performance compared to Tibetan sheep, with meat quality indices also being reasonable. The hybrid advantages are significant, making this crossbred combination an ideal choice for the agro-pastoral transitional zone of Qinghai.
  • YANG Yufei, LI Pan, XUE Zhen, LU Hongzhao, WANG Ling, WANG Shanshan, ZHANG Tao
    Journal Of Domestic Animal Ecology. 2025, 46(3): 73-82. https://doi.org/10.3969/j.issn.1673-1182.2025.03.011
    Microplastics have become a major factor in the pollution of oceans, rivers, lakes, and soils, significantly affecting the growth and development of various types of organisms. Ultimately, they pose substantial risks to human health through accumulation and magnification in the food chain. To comprehensively grasp the research hotspots and trends in the toxicology of microplastics, this study employed CiteSpace and VOSviewer software to conduct a visual analysis of relevant literature in the field of microplastic toxicity from the core database of Web of Science and CNKI databases. The results indicate that the field of microplastic toxicity research is currently in a rapid development phase, primarily driven by foreign literature. However, the top three authors and institutions in terms of publication volume are all from China, demonstrating that China has a significant influence in this area. The high-frequency keywords in the field of microplastic toxicity research mainly include biological toxicity, marine environment, ecotoxicity, and toxic effects. Early studies focused on microplastic environmental pollution, which later shifted to ecological toxicological effects and, in recent years, to diseases induced by exposure and their pathogenic mechanisms. It has been established that exposure to microplastics can lead to various diseases in the nervous system, immune system, reproductive system, and metabolic system. Given the current irreplaceability of plastics, this study suggests that future research should focus on the management of microplastic pollution, the development of plastic alternatives, the prevention of microplastic biological toxicity, and the treatment of diseases caused by microplastic damage.
  • JI Musi, HA Sigaowa, LIU Hejie, XIE Wangwei, NA Haya, Tserennadmid Sodnompil, ZHANG Xinna, SHI Huijie, NA Renhua
    Journal Of Domestic Animal Ecology. 2024, 45(8): 74-79. https://doi.org/10.3969/j.issn.1673-1182.2024.08.012
    Adding antioxidants to semen diluents can suppress the generation of ROS during semen freezing preservation, maintain the balance of the semen antioxidant system, and improve the quality of semen freezing preservation. This article provides a review of the physical and chemical characteristics of goat sperm, semen freezing preservation, sperm oxidative damage, and the application of different antioxidants, in order to provide a theoretical basis for further research on the mechanism of oxidative damage in goat sperm.
  • ZOU Dongbin, YANG Yun, LV Renlong, ZHOU Hanlin, HU Chengjun
    Journal Of Domestic Animal Ecology. 2024, 45(8): 33-40. https://doi.org/10.3969/j.issn.1673-1182.2024.08.006
    This study was conducted to investigate the effects of birth weight on muscle angiogenesis in piglets. Twenty newborn Tunchang black piglets were divided into two groups based on their body weight: normal birth weight piglets (NBW, 1162 ± 98 g) and low birth weight piglets (LBW, 724 ± 31 g), with 10 piglets in each group. The semitendinosus muscles of the piglets were collected for angiogenesis and metabolite determination. The results showed as follows: 1) compared with NBW group, LBW group exhibited significantly decreased protein expression levels of the angiogenesis markers platelet-endothelial cell adhesion molecule 1 (CD31), vascular endothelial growth factor A (VEGF-A), and matrix metalloproteinase 9 (MMP9) in semitendinosus muscle (P<0.05). 2) To further investigate the metabolites related to muscle angiogenesis, the metabolomics technology was employed to screen differential metabolites in the muscle of the two groups. It was found that differential metabolites in the semitendinosus muscle of NBW and LBW piglets were mainly enriched in glycerophospholipid metabolism, unsaturated fatty acid metabolism pathways, arginine and proline metabolism pathways. In the glycerophospholipid metabolism pathway, metabolites such as choline, phosphatidylserine, 2-acyl-sn-glycerol-3-phosphor-serine, and 1-acyl-sn-glycerol-3-phosphate choline were significantly increased in the LBW group (P<0.05); in the unsaturated fatty acid metabolism pathway, the level of linoleic acid was significantly decreased and that of stearic acid were significantly increased in the LBW group (P<0.05) ; in the arginine and proline metabolism pathway, the levels of S-adenosyl-L-methionine and ornithine in muscle were significantly decreased in the LBW group (P<0.05). These results suggest that the decreased muscle angiogenesis in LBW piglets may be associated with changes in metabolites in the glycerophospholipid metabolism pathway, arginine and proline metabolism pathway, and unsaturated fatty acid metabolism pathway.