【摘要】 选用6只装有永久瘤胃瘘管的‘澎波’西藏半细毛羊,用尼龙袋法评定了7种西藏天然牧草的瘤胃降解特性。结果表明,7种牧草干物质在k=0.02时有效降解率排序为:矮兔耳草(61.22%)>藏北苔草(52.43%)>小嵩草(48%)>早熟禾(43.83%)>丝颖针茅(38.81%)>大嵩草(36.64%)>厥麻委陵菜(36.57%);中性洗涤纤维有效降解率排序为:矮兔耳草(50.34%)>藏北苔草(48.66%)>早熟禾(47.23%)>小嵩草(46.92%)>丝颖针茅(41.45%)>大嵩草(37.75%)>厥麻委陵菜(37.39%);蛋白质的有效降解率排序为:藏北苔草(45.39%)>小嵩草(43.04%)>矮兔耳草(42.37%)>早熟禾(41.47%)>丝颖针茅(39.27%)>大嵩草(35.48%)>厥麻委陵菜(30.69%)。更多还原

【Abstract】 Six rumen-cannulated ’Pengbo’ semi-wool rams were used to evaluate the rumen degradation characteristics of seven forages in Tibet.The result showed that the sepuences of the effective degradation rate of dry matter(DM) was: Lagotis humilis(61.22%)>Northern Tibet carex(52.43%)>Kobresia humilis(48%)>Bluegrass(43.83%)>Stipa capillacea Keng(38.81%)>Kobresia littledalei C.B.Clarke(36.64%)>Potentilla anserina L(36.57%).The sequence of the rate of effective neutral detergent fiber(NDF) degradation was Lagotis humilis(50.34%)>Northern Tibet carex(48.66%)>Bluegrass(47.23%)>Kobresia humilis(46.92%)>Stipa capillacea Keng(41.45%)>Kobresia littledalei C.B.Clarke(37.75%)>Potentilla anserina L(37.39%).The sequence of the rate of effective crude protein degradaton was Northern Tibet carex(45.39%)>Kobresia humilis(43.04%)>Lagotis humilis(42.37%)>Bluegrass(41.47%)>Stipa capillacea Keng(39.27%)>Kobresia littledalei C.B.Clarke(35.48%)>Potentilla anserina L(30.69%).更多还原