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本研究采用边甘杂种——代羔羊先在收种后的红豆草再生草地上放牧,然后用青干草加不同水平的精料进行舍饲育肥。结果表明,在放牧阶段,羔羊平均日增重为132克,经过80天的育肥,羔羊屠宰时(8月龄)补饲精料各组的活重均在31.7公斤以上,增重率22.9％～39.2％,胴体重在14.9公斤以上,在最适精料补饲量(0.4公斤/只·日)下,羔羊育肥80天的胴体输出量为50.7公斤/公顷,是不补饲精料羔羊的1.7倍。本文还就羔羊采食营养物质转化为畜产品的效率进行了分析。
In this study, the hybrids-lambs were first grazed on the regenerated grass of sibirica, and then fed with hay and different levels of concentrate. The results showed that in the grazing stage, the average daily gain of lambs was 132 grams. After 80 days of fattening, the live weight of each group of feeding concentrates at the time of lamb slaughter (8 months old) was above 31.7 kg and the weight gain rate was 22.9% ~ 39.2%, and the carcass weight is above 14.9 kg. At the optimum concentrate feeding rate (0.4 kg / day · day), the carcass output of the 80 days of fattening of the lamb is 50.7 kg / ha, 1.7 times. The article also analyzes the efficiency of Lamb feed nutrients into livestock products.