中国畜牧兽医2016，Vol.43Issue(8)：2020-2025,6.DOI:10.16431/j.cnki.1671-7236.2016.08.013
2-甲基丁酸对西门塔尔牛增重、日粮养分消化和甲烷排放的影响
Effects of 2-methylbutyrate on Daily Gain,Dietary Nutrient Digestion and Methane Emissions in Simmental Cattle
摘要
Abstract
The objective of this study was to evaluate the effects of 2‐methylbutyrate on daily gain ,dietary nutrient digestion and methane emissions in Simmental cattle .Thirty‐six Simmental cattle (12‐month‐old) consuming a corn straw diet were divided randomly into four groups (con‐trol group ,experimental groups 1 ,2 and 3) and supplemented with four levels of 2‐methylbutyrate as 0 ,1 .0 ,2 .0 and 3 .0 g/(kg · BW ) ,respectively .Dietary nutrient digestibilities ,average daily gain and methane emissions were determined .The results showed that OM digestibilities of the cattles in experimental group 2 and 3 ,CP digestibilities of the cattles in experimental groups 2 were significantly higher than that in control group (P<0 .05) .NFE digestibilities were not af‐fected by adding 2‐methylbutyrate (P>0.05) .NDF digestibilities of the cattles in experimental group 2 were significantly higher than that in control group and experimental group 1 (P<0 .05) , while their ADF digestibility were significantly higher than that in control and other experimental groups (P<0 .05) .Compared with control group ,the average daily gains of cattles increased sig‐nificantly in experimental groups 2 and 3 (P<0 .05) ,the dry matter intakes of cattles decreased significantly in experimental group 2 (P<0 .05) ,and the feed gain ratio decreased significantly in experimental groups 2 and 3 (P<0 .05) .In addition ,the methane emissions were decreased signif‐icantly in experimental groups 2 and 3 (P<0 .05) .The results indicated that the average daily gain ,nutrient digestion could be improved ,and methane emissions could be restrained by supple‐menting 2‐methylbutyrate in Simmental beef cattle ,the optimal dose of 2‐methylbutyrate supple‐mentation was 2 .0 g/(kg · BW).关键词
2-甲基丁酸/消化率/日增重/甲烷/西门塔尔牛Key words
2-methylbutyrate/digestibility/average daily gain/methane emissions/Simmental cattle分类
农业科技引用本文复制引用
郭建兵,王聪,王江琴..2-甲基丁酸对西门塔尔牛增重、日粮养分消化和甲烷排放的影响[J].中国畜牧兽医,2016,43(8):2020-2025,6.基金项目
山西省科技厅攻关项目 （）
