低蛋白日粮补充必需氨基酸对肥育猪生产性能的影响

目的]探讨低蛋白日粮补充必需氨基酸对生长肥育猪生产性能的影响,为必需氨基酸的合理添加及降低养殖成本提供依据.方法]将90头体重40 kg肥育猪随机分成3组（Ⅰ、Ⅱ、Ⅲ组）,分别饲喂传统高蛋白（14.7％）日粮和粗蛋白质水平分别降低1.5％和3.0％同时添加必需氨基酸的低蛋白日粮.分析在育肥阶段各处理组在平均日增重、平均日采食量和料重比等方面的差异,研究低蛋白日粮补充必需氨基酸对生长肥育猪生产性能的影响.结果]低蛋白日粮补充必需氨基酸对生长肥育猪生产性能的各方面均无显著影响（P＞0.05）.结论]在肥育猪的饲养中可以考虑饲喂低蛋白质日粮补充必需氨基酸来降低养殖成本、增加经济效益.

Effects of Low Protein Diets Supplemented with Essential Amino Acids on Growth Performance of Fattening Pigs

Objective] This study aims to explore the effects of low protein diets supplemented with essential amino acids on growth performance of fattening pigs,provide evidence to add essential amino acids reasonably and reduce the cost of breeding.Method] 90 head of 40 kg weight pigs were randomly divided into 3 groups （group Ⅰ,group Ⅱ,group Ⅲ）,individual fed with the traditional high protein （14.7％） diet and crude protein levels decreased by 1.5 and 3.0 percentage points while adding essential amino acids with low protein diet,observing the difference of all treatment groups in the average daily gain,average daily feed intake and feed conversion ratio during the fattening stage.Result] The test results show that,the low protein diets supplemented with essential amino acids had no significant effect on the performance of growing fattening pigs （P ＞ O.05）.Conclusion] In the feeding of fattening pigs could be fed with low protein diets supplemented essential amino acids method to reduce the production cost and increase economic efficiency.