饲料研究2025，Vol.48Issue(2)：27-31,5.DOI:10.13557/j.cnki.issn1002-2813.2025.02.006
不同蛋白质原料对肉羊生长性能、屠宰性能、养分表观消化率及免疫指标的影响
Effects of different protein raw materials on growth performance,slaughter performance,nutrient apparent digestibility,and immune indicators of mutton sheep
摘要
Abstract
The trial was aimed to investigating the effects of different protein raw materials added to the diet on the growth performance,slaughter performance,nutrient apparent digestibility,and immune index of mutton sheep.A total of 150'Dorper×Mongolian'hybrid mutton sheep were randomly divided into five groups,with six replicates per group and five sheep per replicate.The control group was fed a basal diet containing 15%soybean meal.The cottonseed meal group,peanut meal group and rapeseed meal group were fed with cottonseed meal,peanut meal and rapeseed meal instead of soybean meal,respectively.The mixed meal group was fed a diet composed of cottonseed meal,peanut meal,and rapeseed meal in a 1∶1∶1 ratio.The pre-trial period lasted 10 days,and the formal trial period lasted 120 days.The results showed that compared with the control group,the final body weight,average daily feed intake,and average daily gain of the sheep in the cottonseed meal group were significantly reduced(P＜0.05),while the final body weight of the sheep in the mixed meal group was significantly increased(P＜0.05),and the feed-to-gain ratio was significantly decreased(P＜0.05).The live weight before slaughter,carcass weight,and slaughter rate of the sheep in the cottonseed meal group were significantly lower than those of the other groups(P＜0.05),while those of the sheep in the mixed meal group were significantly higher than those of the other groups(P＜0.05).The nutrient apparent digestibility of crude protein in the cottonseed meal group,peanut meal group,and rapeseed meal group was significantly decreased(P＜0.05),while there were no significant differences in nutrient apparent digestibility between the mixed meal group and the control group(P＞0.05).There were no significant differences in immune index among the groups(P＞0.05).The study indicates that replacing soybean meal with a mixed meal as a protein source in the diet for mutton sheep is effective and feasible,and it is worth promoting and applying in the mutton sheep industry.关键词
蛋白质原料/肉羊/生长性能/养分表观消化率/免疫指标Key words
protein raw materials/mutton sheep/growth performance/nutrient apparent digestibility/immune index分类
农业科技引用本文复制引用
黄增利,李永娥,戴义国,刘光辉,张伟..不同蛋白质原料对肉羊生长性能、屠宰性能、养分表观消化率及免疫指标的影响[J].饲料研究,2025,48(2):27-31,5.基金项目
山东省重点研发计划(项目编号:2022TZXD0021) （项目编号:2022TZXD0021）
