全混合日粮对泌乳中期奶牛生产性能的影响

摘要

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18．21 kg/d、22．53 kg/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.