日粮精粗比对育肥湖羊生产性能和经济效益的影响

Effect of Dietary Ratios of Concentrate to Roughage on Growth Performance and Economic Benefit of Fattening Hu Sheep

为研究日粮精粗比对湖羊羔羊早期育肥生产性能和经济效益的影响,采用完全随机区组设计,选择日龄相近(80±2 d)、体重相近(21.91±0.64 kg)、健康状况良好的湖羊公羔80只,随机分为试验Ⅰ、Ⅱ、Ⅲ和Ⅳ4个组,每组20只,分别饲喂精粗比为40∶60、50∶50、60∶40、70∶30的日粮,试验期为40 d,分析短期育肥阶段各组羔羊的生产性能和经济效益.结果表明,采用不同精粗比日粮对湖羊羔羊进行短期育肥,育肥效果存在极显著差异(P<0.01);精粗比为50∶50(试验Ⅱ组)日粮的饲喂效果最佳,可有效提高湖羊的生产性能和经济效益.

This experiment was performed to study the effect of different ratios of concentrate to roughage diets on the growth performance and economic benefit of Hu Sheep lambs during the early stage of fattening.Eighty healthy lambs were randomly divided into four groups(test groupⅠ~Ⅳ,20 individuals per group)with similar body weight(21.91±0.64 kg)and same days of age(80±2 d).The Hu sheep lambs were then fed total mixed diets with concentrate to forage ratio of 40∶60(test groupⅠ),50∶50(test groupⅡ)and 60∶40(test groupⅢ),70∶30(test groupⅣ),respectively.The ex-perimental period lasts 40 days,and then the growth performance and economic benefit of the lamb groups during the early fattening stage were analyzed.The results showed that the fatting effect of the test groups were significant differences with different ratios of concentrate to roughage(P<0.01).The feeding Hu sheep lambs with concentrate to forage ratio of 50∶50 had the best growth performance and economic benefit under this experiment condition.