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Position: Home > Articles > Comprehensive Evaluation of Associative Effects of Supplementing Based Cow Rice Straws with Alfalfa Hay China Dairy Cattle 2007 (7) 13-16

反刍动物稻草基础日粮补饲苜蓿组合效应的综合评定研究

作  者:
张吉鹍;刘建新
单  位:
浙江大学奶业科学研究所
关键词:
稻草;苜蓿;体外产气;组合效应多项指标综合指数
摘  要:
本研究旨在探讨利用压力传感器产气技术(RPT),用改进的组合效应多项指标综合指数(MFAEI)对反刍动物稻草基础日粮添补不同比例苜蓿的组合效应进行动态的、综合的整体评定。稻草(RS)与苜蓿(AH)分别以100∶0(AH0)、80∶20(AH20)、60∶40(AH40)、40∶60(AH60)、20∶80(AH80)与0∶100(AH100)的比例混合进行体外批次培养,将12h、24h与48h的产气量(GP)、总挥发性脂肪酸(VFA)与微生物氮(MN)用经改进的MFAEI进行多时间点、多指标的整体评定。结果表明,(1)采用RPT、应用经改进的MFAEI,能较好地量化反刍动物饲料间的组合效应,直接进行组合效应的大小评定;(2)反刍动物稻草基础日粮以添补40%~60%的苜蓿效果较好。
译  名:
Comprehensive Evaluation of Associative Effects of Supplementing Based Cow Rice Straws with Alfalfa Hay
作  者:
Zhang Jikun1,2,Liu Jianxin1 (1.Institute of Cow & Milk Science, Zhejiang University, Hangzhou 310029; 2.Institute of Animal & Veterinary Science, Jiangxi Academy of Agricultural Science, Nanchang 330200)
关键词:
Rice straw; Alfalfa hay; In vitro gas production; Multiple-factors associative effects index
摘  要:
An in vitro gas production system (Reading Pressure Technique, RPT) was used to investigate the associative effects of supplementing based cow rice straws (RS) with alfalfa hay (AH). The treatments were combinations of alfalfa hay (0%, 20%, 40%, 60%, 80% and 100%) with RS (AH0, AH20, AH40, AH60 AH80 and AH100 individually). Gas production (GP), total volatile fat acids (VFA) and microbial nitrogen (MN) produced during the incubation (12h?¢24h and 48h) were integrated into the improved multiple-factors associative effects index (MFAEI) to evaluate associative effects of RS and AH. The result indicated that improved MFAEI is a useful index to evaluate the associative effects of ruminant feeds. The suitable ratio for RS supplemented with AH was 40%~60%.

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