摘要
为探讨杂交断奶羔羊的育肥效果,选择体重差异较小、健康的断奶杂交羔羊36只,随机分为试验Ⅰ组、试验Ⅱ组、试验Ⅲ组,每组12只,分别饲喂不同营养水平的育肥饲料,对照组羔羊补饲精料与试验Ⅱ组配方相同。结果表明,试验Ⅰ组羔羊的平均日增重、肉骨比、净肉率、眼肌面积分别比对照组高48.62%、44.35%、13.20%、70.31%,差异极显著(P<0.01),屠宰率比对照组提高了4.82个百分点,差异极显著(P<0.01);试验Ⅰ组只均收入比试验Ⅲ组和对照组提高了64.03%和70.81%,差异极显著(P<0.01);比试验Ⅱ组的只均收入提高了24.80%,差异显著(P<0.05)。说明在合适的范围内,随着日粮营养水平的提升,育肥效果也随之改善。试验Ⅰ组育肥效果好于试验Ⅱ组、试验Ⅲ组。
in order to explore the fattening effect of hybrid weaning lambs,36 healthy weaning hybrid lambs with small body weight difference were randomly divided into three groups:Experimental Group I,Experimental Group II and Experimental Group III,each group(N=12)was fed with different nutrition level fattening feed,and the control group(N=12)was fed with the same fattening feed as Group II.The results showed that the average daily gain,meat-bone ratio,net meat rate and eye muscle area of lambs in Group I were 48.62%,44.35%,13.20%and 70.31%higher than those in the control group respectively(P<0.01),the slaughter rate increased by 4.82%(P<0.01),the average income of group I increased by 64.03%and 70.81%than that of Group III and the control group(P<0.01),was increased by 24.80%than that of Group II,the difference was significant(P<0.05).Explanation:in a suitable range,the fattening effect will be improved along with the improvement of diet nutrition level.The fattening effect of Group I was better than that of Group II and Group III.
作者
赵敏
王志武
孙锐锋
郭宏宇
ZHAO Min;WANG Zhiwu;SUN Ruifeng;GUO Hongyu(College of Shanxi Agricultural University Animal Sciences,Taiyuan Shanxi 030032,China)
出处
《现代畜牧科技》
2023年第11期34-37,共4页
Modern Animal Husbandry Science & Technology
基金
山西省重点研发项目(2022ZDY114,2022ZDYF114-1,2022ZDYF-2,201903D221004)
山西省育种联合攻关项目(YZGG-09)
山西农业大学生物育种工程项目(YZGC130)
山西省专利专化专项项目(202301004)
吕梁重点研发项目(2021NYGG-2-14)。
关键词
育肥羔羊
营养水平
日增重
屠宰率
净肉率
fattening lamb
nutrition level
daily gain
slaughter rate
net meat rate
