Twelve wethers with permanent rumen fistula were allotted randomly to three groups to study the effect of different triticale hay levels(10%,25%,40% of diet)on nutrient digestibility,metabolism and roughage degradation in sheep.

• 选用12只安装永久性瘤胃瘘管的杂一代羯羊,随机分成3组,研究日粮中不同小黑麦干草添加水平(10%25、25%25、40%25)对肉羊消化代谢和粗饲料瘤胃降解的影响。