小黑麦干草对羔羊生产性能及采食行为的影响

为探究小黑麦(×Triticale Wittmack)干草对舍饲羔羊生产性能和采食行为的影响,本研究选用18只舍饲湖羊公羔,随机分为对照组、试验Ⅰ组和Ⅱ组,每组6只;对照组饲喂基础日粮,试验Ⅰ组和Ⅱ组在基础日粮中分别用10%、20%的小黑麦干草等量替代粗料。结果表明:Ⅰ组试验羊的平均日增重为189.72 g,显著高于对照组和Ⅱ组(P<0.05);试验羊采食量随小黑麦干草添加比例的增加而降低,Ⅱ组采食量显著低于Ⅰ组和对照组(P<0.05),采食时长极显著高于Ⅰ组和对照组(P<0.01);Ⅰ组试验羊排泄次数显著高于对照组(P<0.05),与Ⅱ组无显著差异(P>0.05);Ⅰ组试验羊反刍周期、反刍时间、反刍食团数和食团咀嚼总次数都极显著高于Ⅱ组(P<0.01)。综上可知,小黑麦干草作为粗饲料在羔羊日粮中适宜添加比例为10%,这为小黑麦干草饲料化开发利用提供了理论基础。

Effects of feeding triticale hay on the production performance and feeding behavior of lamb

In order to explore the effect of triticale(×Triticale Wittmack)hay on the production performance and feeding behavior of lamb.In this study,18 male lambs of Hu sheep were divided randomly into control group,test group Ⅰ and Ⅱ,with 6 lambs per group.The control group was fed with a standard premixed diet.The test group Ⅰ and Ⅱ were fed with 10% and 20% of triticale hay,respectively,which was replaced by an equal quantity of roughage along with a constant basal diet.The results showed that the average daily gain of lamb in test group Ⅰ was 189.72 g,which was significantly higher than that in the control group and test group Ⅱ(P<0.05).The feed intake of lamb decreased with the increase of adding ratio.The feed intake of group Ⅱ was significantly lower than that of group Ⅰ and control group(P<0.05),and the intake time was significantly higher than that of group Ⅰ and control group(P<0.01).The times of excretion of lamb in group Ⅰ were significantly higher than that in control group(P<0.05),and there was no significant difference with group Ⅱ(P>0.05).The ruminant cycle amount,ruminant time,the number of ruminating food pellet and the total chewing times in group Ⅰ were significantly higher than those in group Ⅱ(P<0.01).In summary,10%was the optimal proportion of triticale hay,as a source of roughage,in the daily diet of lambs.The results will provide a theoretical basis for the development and utilization of triticale hay as forage.