草业学报Issue(9)：53-62,10.DOI:10.11686/cyxb2014407
山西不同居群白羊草的营养成分及瘤胃降解规律
Nutrient components and rumen degradability dynamics of different Bothriochloa ischaemum populations in Shanxi
摘要
Abstract
In order to investigate nutrient contents,and dry matter (DM)and crude protein (CP)degradation properties of different Bothriochloa ischaemum populations at heading stage in Shanxi,fifteen Dorper×local breed F1 male mutton hybrid sheep fitted with permanent rumen fistulas were selected to estimate degradability of DM and CP in the rumen.Findings included:the B .ischaemum populations differed greatly in nutrient con-tent at the heading stage.A population from Taigu had the highest CP content and the lowest neutral detergent fiber (NDF)and acid detergent fiber (ADF)contents,followed by populations from Yuanping and Qinyuan. The rumen degradability for DM and CP of different B .ischaemum populations also differed.The DM degrad-ability of Taigu and Yuanping populations was significantly higher than that of the Xiangfen population at 72 hours (P < 0.05 ).The DM effective degradability of the Taigu population was highest,with a value of 46.39%,followed by Yuanping and Qinyuan populations.Similarly,the CP degradability of the Taigu and Yuanping populations was significantly higher than the Ruicheng population which had the lowest CP degrad-ability at 72 hours (P <0.05).The CP effective degradability of the Taigu population was highest,followed by the Fangshan and Yanggao populations,while there was no significant difference among three other populations (P >0.05).In conclusion,the degradability of DM and CP of the Taigu B .ischaemum population,as tested in rumen fistulated sheep,was the highest,among the tested populations.关键词
白羊草/抽穗期/瘤胃降解/干物质/粗蛋白Key words
Bothriochloa ischaemum/heading stage/rumen degradability/dry matter/protein引用本文复制引用
姬奇武,韩汝旦,董宽虎,马雪豪..山西不同居群白羊草的营养成分及瘤胃降解规律[J].草业学报,2015,(9):53-62,10.基金项目
山西省科技攻关项目（20120311011-1）和山西省科技基础条件平台建设项目（2012091004-0101）资助。 （）
