饲料研究2024，Vol.47Issue(13)：16-20,5.DOI:10.13557/j.cnki.issn1002-2813.2024.13.004
不同蛋白质水平饲粮对舍饲小尾寒羊公羔羊生长性能和肉品质的影响
Effects of different protein levels of diets on growth performance and meat quality of barn feeding small tailed Han sheep male lambs
摘要
Abstract
The experiment was to study the effects of different protein levels in the diet on the growth performance and meat quality of penned small tailed Han sheep lambs.A total of 75 male lambs of the small tailed Han sheep,approximately 90 days old,were randomly divided into three experimental groups:Group Ⅰ(low protein group,12.16％),Group Ⅱ(medium protein group,14.04％),and Group Ⅲ(high protein group,15.70％),with five replicates per group and five male lambs per replicate.The preliminary trial lasted for 10 days,and the formal experiment lasted for 90 days.The results showed that the average weight gain and average daily weight gain of Group Ⅱ and Group m were extremely higher than those of Group Ⅰ(P＜0.01),and the feed to gain ratio was significantly lower than that of Group Ⅰ(P＜0.05).The carcass weight and backfat thickness of Group Ⅰ were significantly lower than those of Group Ⅱ and Group m(P＜0.05),while the cooking loss,drip loss,brightness value,and yellowness value were significantly higher than those of Group Ⅱ and Group Ⅲ(P＜0.05).The average daily income of the lambs in Group Ⅱ was 2.47 yuan/d,which was 0.74 yuan/d higher than that of Group Ⅰ and 0.39 yuan/d higher than that of Group Ⅲ.The study indicates that when the metabolizable energy level is between 11.52 and 11.57 MJ/kg,increasing the dietary protein level can improve the growth performance of barn feeding small tailed Han sheep and has a positive effect on the meat quality,with the highest economic benefit achieved at a crude protein level of 14.04％.关键词
蛋白质/小尾寒羊/生长性能/肉品质/经济效益Key words
protein/small tailed Han sheep/growth performance/meat quality/economic benefits分类
农业科技引用本文复制引用
范敬常,楚惠民..不同蛋白质水平饲粮对舍饲小尾寒羊公羔羊生长性能和肉品质的影响[J].饲料研究,2024,47(13):16-20,5.基金项目
山东省农业良种工程项目(项目编号:2021LZGC010-04) （项目编号:2021LZGC010-04）
山东省羊产业技术体系项目(项目编号:SDAIT-10-12) （项目编号:SDAIT-10-12）
