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异丁酸对西门塔尔牛增重、日粮养分消化和甲烷排放的影响
引用本文:张振威,王聪,刘强,白元生,师周戈,刘晓妮,高书文. 异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]. 草业学报, 2014, 23(1): 346-352. DOI: 10.11686/cyxb20140141
作者姓名:张振威  王聪  刘强  白元生  师周戈  刘晓妮  高书文
摘    要: 试验选用36头12月龄左右、体况良好、体重相近的西门塔尔牛,随机分为4组,测定异丁酸(0,0.02,0.04和0.06g/kg· d)对日粮养分消化率、增重性能和甲烷排放的影响。结果表明,日粮添加异丁酸后,0.04和0.06g/(kg· d)组有机物(organicmatter,OM)消化率显著高于对照组,处理组粗蛋白(crudeprotein,CP)消化率显著高于对照组,无氮浸出物(nitrogenfreeextract,NFE)消化率差异不显著,0.04g/(kg· d)组中性洗涤纤维(neutraldetergentfibre,NDF)消化率显著高于对照组和0.02g/(kg· d)组(P<0.05),0.04g/(kg· d)组酸性洗涤纤维(aciddetergentfibre,ADF)消化率显著高于对照组和其他处理组(P<0.05);试验期间0.04g/(kg· d)组和0.06g/(kg· d)组日增重显著高于对照组(P<0.05),但与0.02g/(kg· d)组差异不显著;肉牛干物质采食量在试验期间0.04g/(kg· d)组显著低于对照组(P<0.05),其他组间差异不显著,0.04g/(kg· d)组和0.06g/(kg· d)组每千克增重消耗饲料显著低于对照组和0.02g/(kg· d)组(P<0.05);此外,玉米秸秆日粮中添加异丁酸后,甲烷能呈降低趋势,0.04g/(kg· d)和0.06g/(kg· d)组显著低于对照组(P<0.05)。由此推断日粮添加异丁酸后对增重性能\营养物质消化和降低甲烷排放有显著促进作用,适宜添加水平为0.04g/(kg· d)。

关 键 词:异丁酸  消化率  日增重  甲烷  西门塔尔牛

Effects of isobutyrate on daily gain,dietary nutrient digestion and methane emissions in Simmental beef cattle
ZHANG Zhen-wei,WANG Cong,LIU Qiang,BAI Yuan-sheng,SHI Zhou-ge,LIU Xiao-ni,GAO Shu-wen. Effects of isobutyrate on daily gain,dietary nutrient digestion and methane emissions in Simmental beef cattle[J]. Acta Prataculturae Sinica, 2014, 23(1): 346-352. DOI: 10.11686/cyxb20140141
Authors:ZHANG Zhen-wei  WANG Cong  LIU Qiang  BAI Yuan-sheng  SHI Zhou-ge  LIU Xiao-ni  GAO Shu-wen
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