全混合日粮对泌乳中期奶牛生产性能的影响

Effect of Total Mixed Ration on Production Performance of Holstein Cows in Mid-lactation Stage

为全混合日粮(Total Mixed Ration,TRM)在奶牛养殖中的应用提供参考,选取12头泌乳中期荷斯坦奶牛,随机分为试验组和对照组,每组6头,试验组采用全混合日粮饲喂,对照组采用精粗分开传统方式饲喂,以探明TRM对泌乳中期奶牛生产性能的影响。结果表明:饲喂全混合日粮奶牛的干物质采食量、产奶量、乳蛋白、乳脂率、乳糖、乳脂固形物和乳非脂固形物分别为18.21kg/d、22.53kg/d、3.32%、3.78%、4.55%、12.37%和8.70%,其中干物质采食量、产奶量、乳蛋白和乳脂率显著高于对照组,乳糖、乳脂固形物和乳非脂固形物高于对照组但差异不显著;同时饲喂全混合日粮可显著提高经济效益。

12 Holstein cows with mid-lactation were divided into the test group and Ck group randomly and averagely,and the test group and CK group were fed with total mixed ration and separate forge ＋concentrated feed respectively to study the effect of TRM on production performance of Holstein cows with mid-lactation and to provide a reference for TRM application in cow breeding.The results showed that the feed intake,milk yield,milk protein content,butter-fat content,lactose content,butter-fat solids and non butter-fat solids of the test group is 18.21 kg/d,22.53 kg/d,3.32%,3.78%,4.55%,12.37% and 8.70% respectively, and feed intake, milk yield, milk protein content and butter-fat content are significantly higher than the CK group.The lactose content,butter-fat solids and non butter-fat solids of the test group are higher than the CK group but difference between two groups is not significant.TRM can improve economic benefit in production of Holstein cows.