利用体外产气法研究2-甲基丁酸对山羊瘤胃发酵的影响  

Effects of 2-methylbutyrate on goat rumen fermentation by in vitro gas production

作　　者：龙际飞[1] 赵胜军[1] 刘艳枝[1] 王春维[1] 

机构地区：[1]武汉工业学院饲料科学系,武汉市430023

出　　处：《中国饲料》2007年第8期23-25,28,共4页China Feed

基　　金：湖北省教育厅基金项目--乳牛异位酸型添加剂的研究和应用;项目编号:D200518005

摘　　要：应用体外产气法模拟瘤胃发酵,通过测定24h体外累计产气量、细菌氮含量和中性洗涤纤维(NDF)的降解率,评价2-甲基丁酸的不同添加水平对山羊瘤胃发酵的影响。试验采用单因子设计,2-甲基丁酸的添加水平分别为0.0%、0.3%、0.6%、0.9%、1.2%,每个水平4个重复。结果发现:与对照组相比,添加0.3%的2-甲基丁酸组能极显著提高24h累计产气量(P<0.01);细菌氮含量有提高的趋势,但是差异不显著(P>0.05);在添加水平为0%～0.9%时,NDF降解率有提高的趋势,但是差异不显著(P>0.05),在1.2%时,其NDF降解率显著下降(P<0.05)。结果表明:日粮中的2-基丁酸的适宜添加水平为0.3%～0.6%。In vitro gas production was conducted to study the effect of 2-methylbutyrate on goat rumen fermentation. A single factorial trial was designed. 2-methylbutyrate was added at levels of 0.0 % ,0.3 % ,0.6 % ,0.9 % and 1.2 % ,and each level included 4 repetitions.After the volume of gas production （GP） was recorded,the bacteria nitrogen and the degradation of neutral detergent fiber（NDF） were detected.The results demonstrated： compared with the control,at level of 0.3 % 2-methylbutyrate increased the GP seriously significantly （P 〈 0.01 ）;the bacteria nitrogen had the increase trend, but no significant differences compared with the control （P 〉 0.05）;At level of 0 % - 0.9 % 2-methylbutyrate increased the degradation of NDF but no significant differences compared with the control （P 〉 0.05）;At the level of 1.2 % 2- methylbutyrate reduced the degradation of NDF significantly （P 〈 0.05）.It could be concluded that the ideal level of 2- methylbutyrate add to ration was 0.3 % - 0.6 %.

关 键 词：体外产气法 2-甲基丁酸 山羊 瘤胃发酵 

分 类 号：S811.2[农业科学—畜牧学]