酒糟与肉羊常用粗饲料的营养价值及瘤胃降解特性的对比研究

摘要

试验旨在研究酒糟与肉羊常用粗饲料(玉米秸秆和高粱秸秆)的营养价值及瘤胃降解特性.选择3只安装永久性瘤胃瘘管的杜×寒杂交F1阉割公羊,采用尼龙袋法测定3种粗饲料的粗蛋白(CP)、干物质(DM)、中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)的瘤胃降解参数,并对其常规养分及能量价值进行分析.结果表明:酒糟的CP含量和肉羊饲用价值均高于玉米秸秆和高粱秸秆,而NDF含量低于这两种粗饲料;酒糟的CP瘤胃有效降解率显著高于此两种秸秆类粗饲料(P<0.05),而DM、ADF和NDF的瘤胃有效降解率均显著低于这两种粗饲料(P<0.05).综合比较,酒糟的CP含量、肉羊饲用的能量价值和CP瘤胃降解率均较高,是补充CP的优质粗饲料.%This experiment was conducted to evaluate the nutrition value and ruminal degradability characteristics of distillers' grains and common roughages for sheep. Three Dorper×Small-tail han crossbred mutton sheep fitted with permanent ruminal cannulas were selected,and nylon-bag technique was used to evaluate the ruminal degradability characteristics of dry matter (DM),crude protein(CP),neutral detergent fiber(NDF),acid detergent fiber(ADF),conventional nutrition and energy value. The results showed that the CP contents and energy value of the distillers'grains were higher than those in the corn stalk and the sorghum stalk,the ADF and NDF contents of the distillers'grains were lower than those in other straws;the CP effective degradability of the distillers'grains was significantly higher than those in other straws(P<0.05),the DM,ADF and NDF effective degradability of the distillers'grains was significantly lower than those in other straws(P<0.05). In general,distillers'grains is a high-quality roughage for supplementing the CP.