不同禾本科牧草与组合秸秆混合饲料的营养特性及利用效率研究  

Effects of the mixing way of different pastures and crop straws on the nutritive characteristics and utilization efficiency of forage

作　　者：姜海林[1] 汤少勋[1] 周传社[1] 谭支良[1] 

机构地区：[1]中国科学院亚热带农业生态研究所,长沙410125

出　　处：《中国生态农业学报》2006年第4期190-194,共5页Chinese Journal of Eco-Agriculture

基　　金：中国科学院知识创新重要方向项目"长江中游生态系统变化与农业持续发展研究(KZCX2-SW-415)";国家"十五"攻关项目"黄淮海平原农区高效畜牧业发展模式与技术研究(2001BA508B03)"资助

摘　　要：利用体外产气技术研究了青贮玉米秸秆与稻秆组合(50∶50)与7种禾本科牧草二次组合时体外发酵特性。结果表明,不同比例组合产气量、理论最大产气量、产气速率及产气延滞时间变化趋势不同;青稻与皇竹草或黑麦草按25∶75的比例组合时的组合效应明显好于其他组合;粗蛋白及中性洗涤可溶物与产气量及产气速率间极显著(P<0.001)正相关,而中性洗涤纤维及酸性洗涤纤维则与之呈极显著(P<0.001)的负相关关系。生产实践中应针对低质粗饲料营养特性,适当添补易发酵或高蛋白牧草,提高粗饲料利用效率。The study was conducted by using in vitro gas production technique to investigate the lermentation characteristics of a compound forage mixed by silage of corns and rice straws（50 ： 50）and different proportional gramineae grasses. The results show that the maximum theoretic gas production, rate of gas production and lag time of gas production present different changing patterns, respectively, with the variation of mixed proportion. The obvious positive associative effects are noted when the mixture of rice straw and silage corn is mixed with Ponniseturn hydridurnor Loliurn perenne with the proportion of 25：75. The significantly（ P 〈 0.001 ）positive relationship is observed between gas production and content of crude protein or neutral detergent soluble matter,and the significantly（ P 〈 0.001）negative relationship is found between gas production and content of neutral detergent fiber or acid detergent fiber. It can be concluded that adding pastures rich in fermentable carbohydrate and/or digestible protein into low-quality forage is essential and necessary to improve utilization efficiency of crude forage.

关 键 词：秸秆组合 禾本科牧草 产气量 组合效应 粗饲料利用 

分 类 号：S816.5[农业科学—饲料科学]