营养限制和环境温度对乌珠穆沁育成公羊体重变化的影响规律

Effect of Nutrition Restriction and Temperature on Variance of Weight of Ujimqin Growth Rams

在中国北方典型草原地区, 冬春季节以33 只乌珠穆沁育成公羊为研究对象, 测定不同持续时间的能量、蛋白质限制对体重变化的影响规律。通过对试验羊连续6 期198 次体重变化记录和156 次消化代谢试验记录分析表明: ①乌珠穆沁育成公羊经过长期的营养限制极显著地表现出减少失重的能力; ②受到过营养限制的乌珠穆沁育成公羊当恢复到自由采食条件下极显著地表现出体增重的优势; ③乌珠穆沁育成公羊冬春季节失重与体重呈正相关, 与能量、蛋白质食入量以及环境温度呈负相关。体重变化规律可以用试验期初始体重、能量食入量、蛋白质食入量和试验分期、环境温度进行数学描述。

This paper studied the variance of weight of Ujimqin growth rams in different resriction codition in cold weather.Modeling of weight variance in different experiment periods was established,based on 198 feeding trial or 156 metabolism trial.It shows that Ujimqin growth rams have the ability to reduce weight loss during restriction and the ability to increase weight during compensatory.