畜牧与兽医2017，Vol.49Issue(10)：24-27,4.
不同规模猪场饲料粗蛋白水平及赖氨酸添加量的研究
Study on dietary crude protein and lysine levels on pig farms of different scale
摘要
Abstract
To provide practical production data for dietary low-protein studies,we conducted a project of dietary crude protein and amino acid levels at each stage of pig industry in China.The dietary crude protein and lysine levels in 55 farms of different scale were investigated.The results showed that dietary crude protein levels and lysine amounts on Chinese pig farms were higher than or equal to that of NRC standard in all stages of pig growth.In the finishing period,dietary crude protein levds on Chinese pig farms were 2 percentage points higher than that of NRC standard.The amounts of dietary Lys in two thirds of farms were 0.1 percentage points higher than that of NRC standard.In the period of early and late nursing and growing,there was no significant difference of dietary crude protein levels among the large-,mediumand small-scale farms (P＞0.05).Whereas in the finishing period,dietary crude protein levels of the large-scale farms were significantly lower than that of the medium-and small-scale farms (P＜0.05),and there was no significant difference between the medium-and smallscale farms (P＞0.05).In addition,no significant difference of dietary Lys levels were found among different scale farms in the nursing period (P＞0.05).Nevertheless,in the growing and finishing period,the amount of dietary Lys in the large-,medium-and small-scale farms was in a decreasing manner.Among them,that in the large-scale farms was significantly lower than that in small-scale farms in the growing period (P＜0.05),and significantly lower than that in medium-and small-scale farms in the finishing period (P＜0.05).The results suggested that the dietary protein level of Chinese pig farms was generally higher than NRC standard.Compared with small and medium-sized pig farms,large-sized pig farms used lower crude protein levels in the diet of porcine growing and finishing period.关键词
饲料/粗蛋白水平/赖氨酸添加量/不同规模猪场Key words
feed/crude protein level/amount of lysine/different scale pig farms分类
农业科技引用本文复制引用
余凯凡,李思奇,朱伟云..不同规模猪场饲料粗蛋白水平及赖氨酸添加量的研究[J].畜牧与兽医,2017,49(10):24-27,4.基金项目
国家重点基础研究发展计划(973) (2013CB127300) （973）
