摘要
通过体外(in vitro)培养法研究了湖北地区不同分级指数(grading index, GI)的粗饲料及粗饲料与精饲料之间的组合效应。结果表明:粗饲料之间按照1∶1组合出现了明显的正组合效应。以组合效应多项指标综合指数(multiple-factors associative effects index, MFAEI)来比较,玉米(Zea mays)青贮和羊草(Leymus chinensis)组合效应最明显,为1.40;其次为玉米青贮和啤酒糟组合,MFAEI为1.07;羊草和稻秸组合最低,MFAEI为0.52。此外,不同组合粗料与精料之间也出现了明显的正组合效应。其中以玉米青贮、羊草和精料组合最为明显,MFAEI为0.37;玉米青贮、啤酒糟和精料组合最低,MFAEI为0.24。这说明,在生产实践中,利用GI指数结合组合效应对粗饲料和精饲料合理搭配使用,可充分发挥正组合效应,控制负组合效应,防止饲料浪费,提高动物生产性能。
In vitro method were used in this experiment to study the relationship between different types of roughage and different roughage and concentrate feed combinations with various GI indexes. The results of this study will provide important information that can be used to match feed and diet when preparing for production. For the multiple-factors associative effects index (MFAEI), corn silage and Leymus chinensis had the highest combination effect (1.40), followed by corn silage and brewer's grains (1.07). The combination of L. chinensis and rice straw was the lowest, with an MFAEI of 0.52. In addition, positive combination effects were observed between different roughage and concentrate combinations.Among them, the corn silage and L. chinensis concentrate had the highest MFAEI (0.37), followed by the L. chinensis and rice straw concentrate (0.36). The corn silage and beer lees concentrate was the lowest with an MFAEI of 0.24. This shows that in production practice, the GI index can be used together with the combination effect to make rational use of roughage and concentrate. This increases positive associative effects, controls negative associative effects, prevents feed waste, and improves animal production performance.
作者
杨洪明
王宇
张轶凤
李晗
许宏杨
王向明
刘宇宸
杨晓明
齐智利
YANG Hongming;WANG Yu;ZHANG Yifeng;LI Han;XU Hongyang;WANG Xiangming;LIU Yuchen;YANG Xiaoming;QI Zhili(Department of Animal Nutrition and Feed Science,Huazhong Agricultural University,Wuhan 430070,Hubei,China;Enshi Jinxin Agricultural Development Co.,Ltd.,Enshi Autonomous Prefecture,Enshi 445033,Hubei,China)
出处
《草业科学》
CAS
CSCD
2019年第2期556-564,共9页
Pratacultural Science
基金
国家重点研发计划项目(2016YFD0500507
2018YFD0501605)
湖北省科技支撑计划项目(2014BBA205)
大北农青年学者提升专项(2017DBN003)
中央高校基本科研业务费专项资金资助项目(2662018PY079)
作者简介
第一作者:杨洪明(1992-),男,湖北襄阳人,在读硕士生,研究方向为反刍动物营养。E-mail:1766527367@qq.com;共同第一作者:王宇(1994-),男,天津人,在读硕士生,研究方向为反刍动物营养。E-mail:4673089087@qq.com;通信作者:齐智利(1974-),女,内蒙古赤峰人,副教授,硕导,博士,研究方向为反刍动物营养。E-mail:zhiliqi@mail.hzau.edu.cn.
