CAJ | 학술논문

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0.06 g/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(organic matter,OM)消化率显著高于对照组,处理组粗蛋白(crude protein,CP)消化率显著高于对照组,无氮浸出物(nitrogen free extract,NFE)消化率差异不显著,0.04 g/(kg·d)组中性洗涤纤维(neutral detergent fibre,NDF)消化率显著高于对照组和0.02 g/(kg·d)组(P＜0.05),0.04 g/(kg·d)组酸性洗涤纤维(acid detergent fibre,ADF)消化率显著高于对照组和其他处理组(P＜0.05);试验期间0.04 g/(kg·d)组和0.06g/(kg·d)组日增重显著高于对照组(P＜0.05),但与0.02 g/(kg·d)组差异不显著;肉牛干物质采食量在试验期间0.04 g/(kg·d)组显著低于对照组(P＜0.05),其他组间差异不显著,0.04 g/(kg·d)组和0.06 g/(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,0.04 g/(kg·d)和0.06 g/(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0.04 g/(kg·d).
시험선용36두12월령좌우、체황량호、체중상근적서문탑이우,수궤분위4조,측정이정산(0,0.02,0.04화0.06 g/kg·d)대일량양분소화솔、증중성능화갑완배방적영향.결과표명,일량첨가이정산후,0.04화0.06g/(kg·d)조유궤물(organic matter,OM)소화솔현저고우대조조,처리조조단백(crude protein,CP)소화솔현저고우대조조,무담침출물(nitrogen free extract,NFE)소화솔차이불현저,0.04 g/(kg·d)조중성세조섬유(neutral detergent fibre,NDF)소화솔현저고우대조조화0.02 g/(kg·d)조(P＜0.05),0.04 g/(kg·d)조산성세조섬유(acid detergent fibre,ADF)소화솔현저고우대조조화기타처리조(P＜0.05);시험기간0.04 g/(kg·d)조화0.06g/(kg·d)조일증중현저고우대조조(P＜0.05),단여0.02 g/(kg·d)조차이불현저;육우간물질채식량재시험기간0.04 g/(kg·d)조현저저우대조조(P＜0.05),기타조간차이불현저,0.04 g/(kg·d)조화0.06 g/(kg·d)조매천극증중소모사료현저저우대조조화0.02g/(kg·d)조(P＜0.05);차외,옥미갈간일량중첨가이정산후,갑완능정강저추세,0.04 g/(kg·d)화0.06 g/(kg·d)조현저저우대조조(P＜0.05).유차추단일량첨가이정산후대증중성능\영양물질소화화강저갑완배방유현저촉진작용,괄의첨가수평위0.04 g/(kg·d).