饲用玉米·高丹草·饲用高粱降解规律的研究

目的]为了探讨饲用玉米、高丹草、饲用高粱在瘤胃内的降解规律。方法]采用尼龙袋技术,对不同饲草的瘤胃内降解率进行研究。结果]各饲草CP、NDF、ADF的有效降解率存在差异,而DM、OM的有效降解率差异不显著。其中CP的有效降解率以魔术师高丹草最高,达70.80%;饲宝1号饲用玉米、乐食高丹草、哈妮格林饲用高粱ADF的有效降解率在0.05水平上显著高于魔术师高丹草;乐食高丹草、哈妮格林饲用高粱、魔术师高丹草的NDF有效降解率在0.05水平上显著高于饲宝1号饲用玉米。结论]该研究为饲用玉米、高丹草、饲用高粱的合理利用提供了科学依据。

Study on the Degradation Laws of Forage Maize, Scrghum-Sudan Hybrid Grass and Forage Sorghum

Objective] The research aimed to discuss the degradation laws of forage maize,sorghum-Sudan hybrid grass and forage sorghum.Method] The rumen degradability of different kinds of forage was studied by using the nylon-bag technology.Result] The effective degradability of CP,NDF and ADF in different kinds of forage had difference and that of DM and OM had not significant difference.The effective degradability of CP in Magician sorghum-Sudan hybrid grass was highest(70.80%),that of ADF in Sibao 1 forage maize,Leshi sorghum-Sudan hybrid grass and Hanigreen forage sorghum was significantly higher than that of Magician sorghum-Sudan hybrid grass at 0.05 level and that of NDF in Leshi sorghum-Sudan hybrid grass and Hanigreen forage sorghum and Magician sorghum-Sudan hybrid grass was significantly higher than Sibao 1 forage maize at 0.05 level.Conclusion] The research provided scientific basis for reasonable utilization of forage maize,sorghum-Sudan hybrid grass and forage sorghum.