摘要
为兴义矮脚鸡科学饲养提供依据,选取180只体重相近的0日龄健康雏鸡,在1~4周龄和5~7周龄采食赖氨酸含量分别为0.8%、1.0%和1.1%及0.7%、0.9%和1.0%的日粮,以探明1~7周龄兴义矮脚鸡适宜的赖氨酸需要量。结果表明:1~4周龄和5~7周龄的兴义矮脚鸡采食日粮赖氨酸含量为1.0%的处理均可获得较高的体重、日均增重和较低的料肉比。随日粮赖氨酸水平提高,日粮蛋白、钙和磷的表观代谢率随之增加,1~4周龄、5~7周龄均以赖氨酸水平1.0%组日粮的养分消化率最高。兴义矮脚鸡1~7周龄赖氨酸适宜需要量为1.0%。
180 newborn Xingyi bantam chickens with similar body weight were selected.Xingyi bantam chickens with 1-4 weeks old were respectively fed by daily rations with three lysine levels(0.8%,1.0%and 1.1%)and Xingyi bantam chickens with 5-7 weeks old were respectively fed by daily rations with three lysine levels(0.7%,0.9%and 1.0%)to explore the optimum lysine requirement of Xingyi bantam chickens with 1-7 weeks old and provide a reference for scientific feed of Xingyi bantam chickens.Result:Xingyi bantam chickens with 1-4 weeks old and with 5-7 weeks old fed by the daily ration with 1%lysine can obtain higher body weight,higher average daily gain weight and lower feed conversion ratio.The apparent metabolic rate of protein,Ca and P in daily ration increases with increase of lysine level in daily ration.The nutrient digestion rate of Xingyi bantam chickens with 1-4 weeks old and with 5-7 weeks old fed by the daily ration with 1%lysine is the highest among three lysine levels.In conclusion,the optimum lysine requirement of Xingyi bantam chickens with 1-7 weeks old is 1.0%.
作者
蔡惠芬
施晓丽
CAI Huifen;SHI Xiaoli(Key Laboratory of Animal Genetics,Breeding and Reproduction in PlateauMountainous Region,Ministry of Education,College of Animal Sciences,Guizhou University,Guiyang,Guizhou 550025,China)
出处
《贵州农业科学》
CAS
2019年第9期61-65,共5页
Guizhou Agricultural Sciences
基金
贵州省科技厅年度基金项目“兴义矮脚鸡可消化赖氨酸、蛋氨酸和苏氨酸需要量研究”[黔科合J字（2008）2131]
关键词
兴义矮脚鸡
赖氨酸
需要量
表观代谢率
Xingyi bantam
lysine
requirement
apparent metabolic ratio
