饲料中添加半胱胺对育肥羊增重效果的影响

Effect of cysteamine on the gain of the fattening Tibetan sheep

选择2—3岁的高原型藏羊80只，随机分为3个试验组和1个对照组，每组20只，在3个试验组中分别添加半胱胺0.2、0．4、0．6克／（只·日）进行试验。结果表明，添加0.4克／（只·日）时的增重、日增重、料重比以及钙、磷、粗蛋白的表观消化率都最佳。说明饲料中添加0.4克／（只·日）水平的半胱胺能显著提高育肥羊的增重，是最佳的日粮添加剂量。

80 Tibetan sheep were divided randomly into 3 experiment groups and 1 control group （20 sheep in each group）. Cysteamine were supplemented in three groups diets by 0.6 g, 0.4 g ,0.2 g respectively in the every clay per head. The result showed that the group with 0.4 g cysteamine has the highest total gain, average daily gain, feed conversion rate and also the highest apparent digestibility for Ca, P, CP etc. It indicates that supplementing 0.4g cysteamine can improve the gain and profits of fattening sheep significantly, which is the proper dose in diet.