泌乳盛期奶牛能量和蛋白质转化效率的营养调控  

Nutrition Regulation for Energy/Protein Conversion Efficiency of Holstein Cows at Peak Lactation Period

作　　者：帅官棋[1] 杨正德[1] 宋大书 曾一敬 裴成江[1] 吴锋[1] 

机构地区：[1]贵州大学动物科学学院,贵州贵阳550025 [2]贵州省贵阳市清镇市奶牛场,贵阳清镇551400

出　　处：《贵州农业科学》2011年第12期174-177,共4页Guizhou Agricultural Sciences

基　　金：贵州省科技攻关项目"奶牛高效关键饲养技术及营养调控研究与示范"[黔科合NY字(2007)3008];贵州大学大学生创新型实验计划项目"过瘤胃保护限制性氨基酸提高奶牛乳蛋白含量的营养调控研究"[贵大国创字(2009)012]

摘　　要：为奶牛的高效和健康养殖技术提供技术指导,选择体况、胎次、产犊时间、产奶量相近的泌乳盛期中国荷斯坦奶牛27头,采用L9(34)正交试验设计,研究日粮干物质(DM)中中性洗涤剂纤维(NDF)、小肠可消化蛋白(IDCP)、添加过瘤胃保护氨基酸(RPAA)对奶牛能量和蛋白质转化效率的营养调控效果。结果表明:营养调控优化因子组合为IDCP按《中国奶牛饲养标准》(2004)推荐需要量92%、RPMet 8g/d+RPlys 32g/d、日粮NDF 37%,可有效提高泌乳盛期奶牛能量与蛋白质用于泌乳的转化效率。27 Holstein cows with the similar body condition,birth rank,calving time and milk output were fed the daily rations containing different NDF,IDCP and RPAA levels to study the nutrition regulation effect on energy/protein conversion efficiency.The results showed that the optimum optimization combination for nutrition regulation was 92% of the IDCP requirement recommended by China Feeding Standard of Dairy Cattle（2004 edition）,8g/d RPMet,32g/d RPLys and 37% NDF in daily ration.The energy/protein conversion efficiency of Holstein cows at peak lactation period could be improved effectively.

关 键 词：奶牛 过瘤胃保护氨基酸 小肠可消化蛋白 能量/蛋白转化效率 

分 类 号：S823.91[农业科学—畜牧学]