花生秧青贮对肉羊生长性能、养分表观消化率及经济效益的影响

Effect of peanut seedling silage on growth performance,nutrient apparent digestibility,and economic benefit of mutton sheep

试验旨在研究花生秧青贮对肉羊生长性能、养分表观消化率及经济效益的影响。试验选择60只体重相近、体况良好的肉羊,随机分为4组,每组15个重复,每个重复1只羊。对照组肉羊饲喂全株玉米青贮饲粮,试验1组使用20%的花生秧青贮替代全株玉米青贮,试验2组使用40%的花生秧青贮替代全株玉米青贮,试验3组使用80%的花生秧青贮替代全株玉米青贮。试验期60 d。结果表明,各花生秧青贮组肉羊的料重比显著低于对照组(P<0.05),平均日增重显著高于对照组(P<0.05)。试验2组和试验3组肉羊对粗蛋白和中性洗涤纤维的表观消化率显著高于对照组(P<0.05)。试验2组和试验3组肉羊血清中总蛋白水平显著高于对照组(P<0.05),尿素氮和甘油三酯水平及谷丙转氨酶活性显著低于对照组(P<0.05)。各花生秧青贮组养殖的利润均高于对照组,且随着花生秧青贮用量的增大呈上升趋势。研究表明,花生秧青贮可以提高肉羊的生长性能及养分表观消化率,改善血清生化指标,提高养殖利润。综合考虑,肉羊养殖中使用40%~80%的花生秧青贮比较适宜。

The study was to investigate the effect of peanut seedling silage on the growth performance,apparent nutrient digestibility,and economic benefit of mutton sheep.Sixty mutton sheep with similar body weight and good condition were randomly divided into four groups with 15 replicates per group and one sheep per replicate.The mutton sheep in the control group were fed a whole-plant maize silage diet,20%peanut silage was used instead of whole-plant maize silage in the experiment group 1,40%peanut silage was used instead of whole-plant maize silage in the experiment group 2,and 80%peanut silage was used instead of whole-plant maize silage in the experiment group 3.The experiment lasted for 60 days.The results showed that the feed to gain ratio of mutton sheep in each peanut seedling silage group was significantly lower than that in the control group(P<0.05),and the average daily gain was significantly higher than that in the control group(P<0.05).The apparent digestibility of crude protein and neutral detergent fiber in the experiment group 2 and experiment group 3 was significantly higher than that in the control group(P<0.05).The serum total protein level in the experiment group 2 and experiment group 3 was significantly higher than that in the control group(P<0.05),and the urea nitrogen and triglyceride levels,and the ALT activity were significantly lower than that in the control group(P<0.05).The profit of each peanut seedling silage group was higher than that of the control group,and showed an upward trend with the increase of peanut seedling silage dosage.The study indicates that peanut seedling silage can improve the growth performance and nutrient apparent digestibility of mutton sheep,improve serum biochemical indexes,and increase breeding profits.Considering comprehensively,it is more suitable to use 40%~80%peanut seedling silage in mutton sheep breeding.