苜蓿、沙打旺、高丹草、狼尾草和黑麦草间的组合效应研究  

Research of Associative Effects of Alfalfa,Astragalus adsurgens,Gaodan Grass,Chinese Pennisetum and Ryegrass

作　　者：王志军[1,2] 格根图[1] 高静[3] 朝鲁孟其其格 王晓光[4] 贾玉山[1] 

机构地区：[1]内蒙古农业大学生态环境学院,呼和浩特010019 [2]内蒙古自治区草原勘察规划院,呼和浩特010051 [3]内蒙古农业大学动物科学学院,呼和浩特010019 [4]中国科学院内蒙古草业中心,呼和浩特010031

出　　处：《动物营养学报》2015年第11期3628-3635,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家自然科学基金项目(31201850);内蒙古中国-加拿大饲用作物试验与示范项目

摘　　要：本试验旨在研究苜蓿、沙打旺、高丹草、狼尾草和黑麦草间的组合效应。引入组合效应综合指数(MFAEI)以及饲养试验,以苜蓿、沙打旺2种豆科牧草和高丹草、狼尾草、黑麦草3种禾本科牧草为原料采用体外发酵的研究方法,对p H、产气量、微生物蛋白、挥发性脂肪酸、有机物体外降解率等指标进行3次重复测定,利用MFAEI对饲草进行优化组合和筛选。通过试验对比分析看出,将粗饲料进行合理搭配后,通过营养素间的互补,可显著提高粗饲料的整体发酵水平。结果表明:6种饲草配方的MFAEI从高到低依次为:B组>A组>C组>D组>F组>E组。依据MFAEI原理,从6种饲草组合筛选出2个最优组合:A组为苜蓿∶沙打旺∶狼尾草=40∶40∶20,M FAEI为1.13;B组为苜蓿∶沙打旺∶高丹草=40∶40∶20,M FAEI为1.21。This paper aimed to study the associative effects of Alfalfa,Astragalus adsurgens,G aodan grass,Chinese pennisetum and ryegrass. Introduced the combination of multiple-factors associative effects index（ MFAEI） and feeding experiment,using two kinds of legume forage with alfalfa,Astragalus adsurgens and three kinds of grasses with Sudan grass,Chinese pennisetum and ryegrass as rawmaterials by the method of in vitro fermentation,tested the p H,gas production,microbial protein,volatile fatty acid,in vitro digestibility organic matter indexes determination of 3 repetitions,by the means of the MFAEI to design selection and the optimized combination. Through the test contrast analysis,with reasonable collocation of the roughage and the complementary between nutrients,the level of whole fermentation could significantly improve. The results showed that the MFAEI of six kinds of forage from high to lowin turn was： group B group C group A group D group Fgroup E. According to the theory of MFAEI,two optimal combination from six kinds of forage combination is： group A,alfalfa ∶ Astragalus adsurgens ∶ Chinese pennisetum = 40∶ 40∶ 20,the MFAEI is 1. 13;group B,alfalfa ∶ Astragalus adsurgens ∶ Sudan grass = 40∶ 40∶ 20,the MFAEI is 1.21.

关 键 词：粗饲料 体外发酵 组合效应 MFAEI 

分 类 号：S816[农业科学—饲料科学]