本试验旨在研究6种反刍动物常用粗饲料（玉米秸秆、水稻秸秆、花生秧、大豆秸秆、甘蔗渣、甘蔗梢）在肉牛瘤胃中的降解规律，为其在肉牛生产中的有效利用提供理论依据。选取4头30月龄、体重[（415±20）kg]相近、安装有永久性瘤胃瘘管的利鲁牛阉牛（利木赞牛×鲁西黄牛）作为试验动物，采用尼龙袋技术评定其干物质（DM）、有机物（OM）、粗蛋白质（CP）、中性洗涤纤维（NDF）和酸性洗涤纤维（ADF）的瘤胃降解特性。结果表明：1）花生秧的CP含量显著高于其他粗饲料（P<0.05）；花生秧的NDF含量显著低于其他粗饲料（P<0.05）。甘蔗渣的CP含量显著低于其他粗饲料（P<0.05）；甘蔗渣的NDF含量显著高于其他粗饲料（P<0.05）。2）DM有效降解率大小顺序依次为花生秧 > 大豆秸秆 > 甘蔗梢 > 玉米秸秆 > 水稻秸秆 > 甘蔗渣，除玉米秸秆和甘蔗梢之间差异不显著（P>0.05）外，其余各粗饲料之间均差异显著（P<0.05）。花生秧的OM有效降解率显著高于其他粗饲料（P<0.05），甘蔗渣的OM有效降解率显著低于其他粗饲料（P<0.05）。不同粗饲料的CP有效降解率均差异显著（P<0.05），大小顺序依次为花生秧 > 玉米秸秆 > 大豆秸秆 > 甘蔗梢 > 水稻秸秆 > 甘蔗渣。大豆秸秆的NDF有效降解率显著高于其他粗饲料（P<0.05），甘蔗渣的NDF有效降解率显著低于其他粗饲料（P<0.05）。花生秧和大豆秸秆的ADF有效降解率显著高于其他粗饲料（P<0.05），甘蔗渣的ADF有效降解率显著低于其他粗饲料（P<0.05）。由此可见，6种反刍动物常用粗饲料营养成分含量和瘤胃降解规律各异，其中，花生秧的可利用价值最高，甘蔗梢也是一种优质的粗饲料资源，甘蔗渣可利用价值很低，不适合单独饲喂肉牛。

This experiment was conducted to compare the degradation rule of six kinds of common roughages (corn straw, rice straw, peanut vine, soybean straw, sugarcane bagasse and sugarcane shoots) for ruminants in rumen of beef cattle, to provide references for efficient utilization in beef cattle production. Four 30-month, permanent cannulated Lilu steers (Limousin cattle×Luxi yellow cattle) with similar body weight of (415±20) kg were used in the trial. Nylon bag technique was used to evaluate rumen degradability characteristics of dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fibre (NDF) and acid detergent fibre (ADF). The results showed as follows:1) the CP content in peanut vine was significantly higher than that in other roughages (P<0.05), and the NDF content in peanut vine was significantly lower than that in other roughages (P<0.05). The CP content in sugarcane bagasse was significantly lower than that in other roughages (P<0.05), and the NDF content in sugarcane bagasse was significantly higher than that in other roughages (P<0.05). 2) The sequence of DM effective degradability from high to low was peanut vine > soybean straw > sugarcane shoots > corn straw > rice straw > sugarcane bagasse, and the DM effective degradability had significant difference among different roughages (P<0.05) except between corn straw and sugarcane shoots (P>0.05). The OM effective degradability of peanut vine was significantly higher than that of other roughages (P<0.05), and the OM effective degradability of sugarcane bagasse was significantly lower than that of other roughages (P<0.05). The CP effective degradability had significant difference among different roughages (P<0.05), and the sequence from high to low was peanut vine > corn straw > soybean straw > sugarcane shoots > rice straw > sugarcane bagasse. The NDF effective degradability of soybean straw was significantly higher than that of other roughages (P<0.05), and the NDF effective degradability of sugarcane bagasse was significantly lower than that of other roughages (P<0.05). The ADF effective degradability of peanut vine and soybean straw was significantly higher than that of other roughages (P<0.05), and the ADF effective degradability of sugarcane bagasse was significantly lower than that of other roughages (P<0.05). To sum up, the six kinds of common roughages for ruminant are vary in nutritional component contents and rumen degradation rule, and the peanut vine has the highest usable value, the sugarcane shoots is also a kind of high quality roughage resources, sugarcane bagasse has very low usable value and is unsuitable to be used individually for beef cattle.