摘要
本试验主要研究放牧绵羊体重变化的规律。试验于1985～1988年在内蒙古荒漠草原地区进行。试验结果表明:一年四季绵羊的体重呈规律性变化,每年5月初～10月初是绵羊的增重时期,羯羊的增重率为41.12%;10月中旬～翌年4月为掉膘时期,掉膘率为21.15%。本文分析了绵羊体重增减的原因,并提出了发展季节畜牧业等意见和建议。
This experiment was made on Stipa breviflora desert steppe in Inner Mongolia in 1985～1988,and liveweight change of grazing sheep was studied. The results indicated that the dynamic change of the liveweight of grazing sheep occured within years.Grazing sheep gains weight from early May to early October and loses weight from mid-October to next April.This paper analysed the reasons for liveweight gaining and losing of sheep.The authors suggested ways that can reduce the lose by sheep death.The suggested measures include:developing seasonal animal husbandry,reserving hay for Winter- spring,and paying attention to feeding and sheep management.
关键词
绵羊
自由放牧
增重
掉膘
季节
desert steppe
sheep
continuous grazing
gain
lose
seasonal animal husbandry
