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Study on Main Factors Affecting Milk Performance of Dairy Cows Using General Linear Model
Author(s): LIU Wenjiao, SUN Shaohua
Pages: 24-
26
Year: 2010
Issue:
6
Journal: China Dairy Cattle
Keyword: 奶牛; 体细胞数; 产奶量; 乳脂率; 乳蛋白率; 线性模型;
Abstract: 利用一般线性模型研究各种因素对奶牛产奶性能的影响.牛场、胎次和产犊季节对奶牛产奶量影响差异极显著(P<0.01),随着奶牛胎次的增加,奶牛产奶量增加;夏季产犊的奶牛产奶量最低,冬季产犊的最高;体细胞计数对奶牛产奶量没有显著性影响(P>0.05),但随着体细胞数的增加,产奶量下降.牛场、胎次和体细胞计数对乳脂率有极显著的影响(P<0.01),第三牛场平均乳脂率为4.38%,显著高于其他三个牛场;随着...
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