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Effects of Diet Supplemented with Different Level of Mini-Peptides on the Lactating Performance of Holstein Cows
Author(s): 
Pages: 12-14
Year: Issue:  2
Journal: CHINA DAIRY CATTLE

Keyword:  小肽营养素奶牛产奶量乳蛋白乳脂率;
Abstract: 试验选择泌乳期中国荷斯坦奶牛32头,随机分为4组,A组(对照组)为基础精料日粮组;B、C、D组分别为基础精料日粮+0.1%、0.3%、0.5%小肽营养素.正试期28d.结果表明,添加0.1%、0.3%、0.5%小肽营养素后,奶牛头日平均产奶量分别提高1.67kg(6.38%)(P<0.05)、1.75kg(6.69%)(P<0.05)和1.64kg(6.27%)(P<0.05).添加小肽营养素后,乳蛋白和乳脂率均有所提高,其趋势随小肽营养素添加量的增加而提高.添加0.1%、0.3%、0.5%小肽营养素后,奶牛头日净增效益3.52元、3.40元、2.86元.综合生产性能和经济效益,以添加0.1%-0.3%小肽营养素为适宜.
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