不同蛋白水平日粮对西农萨能羊公羔肥育性能的影响

本研究旨在探讨不同蛋白水平日粮对西农萨能羊公羔肥育性能的影响。选择21只健康、体重相近的6月龄西农萨能羊公羔,随机分为3组,分别饲喂蛋白水平为19.5%、16.0%、13.4%的日粮。试验为期50 d,测定试验羊的体重、体尺、血液生化指标、屠宰性能和羊肉品质。结果显示:高蛋白组试验羊体重、日增重、胸围、体斜长最大,料重比最小(P>0.05);血浆中总蛋白、白蛋白、球蛋白、总胆固醇含量高于中、低蛋白组(P>0.05);屠宰率、净肉重、肉骨比、眼肌面积具有最大值(P>0.05);羊肉失水率最低(P>0.05)、嫩度最好(P<0.05)。经综合评定,19.5%蛋白水平日粮更有利于西农萨能羊公羔短期育肥。

Effects of different concentrated protein levels on growing-fattening in male kids of Xinong Saanen dairy goat

The aim of the project was to study the effect of different protein levels of concentrated feeds on the growing-fattening in male kids of Xinong Saanen dairy goat.Twenty-one healthy male kids of Xinong Saanen dairy goat with similar age and body weight were randomly divided into 3 groups.The protein levels of the diet were 19.5%,16%,and 13.4%.Data of body weight,body measurement,blood biochemical parameters,slaughter performance and meat quality traits were recorded and analyzed during 50 days.The results showed that the group of 19.5% dietary protein level had a better performance in many aspects,including their body weight gain,chest measurement,body length,daily gain,feed efficiency,carcass weight,slaughter performance and meat quality traits.In addition,the content of total protein,albumin,globulin and total cholesterol in the blood was better(P>0.05),and the meat tenderness was significantly improved(P<0.05).In conclusion,the protein level of 19.5% diet was more suitable for the growing-fattening male kids of Xinong Saanen dairy goat.