包头地区荷斯坦奶牛产奶量和乳成分的季节性变化规律
王馨瑶,吐日根白乙拉,焦景瑜,东日布
包头地区荷斯坦奶牛产奶量和乳成分的季节性变化规律
Study on Seasonal Variation Characteristics of Milk Yield and Raw Milk Composition of Baotou Holstein Cow
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