草地藏系绵羊冬、春羔的生长性能、屠宰性能、器官发育及经济效益对比分析  

Comparative Analysis on Growth Performance,Slaughter Performance,Organ Development and Economic Benefit of Tibetan Sheep in Winter and Spring on Grassland

作　　者：付建 陈志远 陈勇 吴毅鹏 董彦强 易宗容[4] 杨发龙[5] FU Jian;CHEN Zhiyuan;CHEN Yong;WU Yipeng;DONG Yanqiang;YI Zongrong;YANG Falong(Aba Vocational College,Sichuan Aba 623200,China;Aba Prefecture Animal Husbandry Science and Technology Research Institute,Sichuan Aba 624603,China;Ruoergai County Bureau of Science,Technology,Agriculture and Animal Husbandry,Sichuan Aba 624599,China;Yibin Vocational College,Sichuan Yibin 644003,China;Key Laboratory of the Ministry of Education for the Protection and Utilization of Animal Genetic Resources in the Qingzang Plateau,Southwest University for Nationalities,Sichuan Chengdu 610041,China)

机构地区：[1]阿坝职业学院,四川阿坝623200 [2]阿坝州畜牧科学技术研究所,四川阿坝624603 [3]若尔盖县科学技术和农业畜牧局,四川阿坝624599 [4]宜宾职业技术学院,四川宜宾644003 [5]西南民族大学青藏高原动物遗传资源保护与利用教育部重点实验室,四川成都610041

出　　处：《饲料工业》2023年第17期75-80,共6页Feed Industry

基　　金：2021年四川省科技厅科技计划项目[2021YJ0288]。

摘　　要：试验旨在研究草地藏系绵羊冬、春羔的生长性能、屠宰性能、器官发育及经济效益。选取90只基础母羊同群放牧管理,投入3只公羊进行自然交配,按出生时间选取体重相近、体况健康的冬羔和春羔各30只,每组3个重复,每个重复10只羊,两组分群轮牧管理,归牧后分组补饲,试验结束时从每组中选10只羊屠宰。结果显示:两组间初生重及2、4、6、8、9月龄体重差异极显著(P<0.01);两组间2月龄体高和体长、4月龄体长、6月龄胸围和9月龄体高差异显著(P<0.05),4月龄体高,6月龄体高和体长,8月龄体高、体长和胸围,9月龄体长和胸围差异极显著(P<0.01),而2、4、6、8、9月龄管围差异不显著(P>0.05);两组间宰前活重、胴体重、屠宰率和眼肌面积差异极显著(P<0.01),而胴体脂肪含量值(GR值)差异不显著(P>0.05);两组间心脏重量、肝脏重量、肾脏重量、瘤胃重量、网胃重量、皱胃重量、心脏指数、毛皮指数、瘤胃占复胃的比例和网胃占复胃的比例差异显著(P<0.05),两组间脾脏指数、肝脏指数、头指数、蹄指数、瘤胃指数、网胃指数、瓣胃指数和皱胃指数差异极显著(P<0.01),两组间脾脏重量、肺脏重量、头重量、蹄重量、毛皮重量、瓣胃重量、肺脏指数、肾脏指数、瓣胃占复胃的比例和皱胃占复胃的比例差异不显著(P>0.05);冬羔组每只羊的纯利润要比春羔组提高29.61%。综上可知,冬羔的生长性能、屠宰性能、器官发育和经济效益要高于春羔。The experiment aims to study the growth performance,slaughter performance,organ develop-ment,and economic benefits of winter and spring lambs of grassland Tibetan sheep.A total of 90 basic ewes were selected for grazing management in the same group,and three rams were used for natural mat-ing.30 winter lambs and 30 spring lambs with similar weight and healthy body condition were selected according to the time of birth,with three replicates in each group and 10 lambs in each replicates.The two groups were divided into groups for rotational grazing management.After being returned to the herd,10 lambs were selected from each group for supplementary feeding.At the end of the trial,10 lambs were slaughtered from each group.The results showed that there was a significant difference in birth weight between the two groups at two months,four months,six months,eight months,and nine months of age(P0.01);There were significant differences in body height and length at two months,body length at four months,chest circumference at six months,and body height at nine months between the two groups(P0.05).There were extremely significant differences in body height and length at four months,body height and length at six months,body height and length at eight months,body length and chest circumference at eight months,and body length and chest circumference at nine months(P0.01),while there was no significant difference in tube circumference at two months,four months,six months,eight months,and nine months(P0.05);the difference in live weight,carcass weight,slaughter rate,and eye muscle area between the two groups was extremely significant(P0.01),while the difference in grade rule(GR) value was not significant(P0.05);there were significant differences(P0.05) between the two groups in heart weight,liver weight,kidney weight,rumen weight,reticulum weight,abomasum weight,heart index,fur index,proportion of rumen to regurgitation,and proportion of reticulum to regurgitation.There were significant differences(P0.01) between the two groups i

关 键 词：冬羔 春羔 生长性能 屠宰性能 器官发育 经济效益 

分 类 号：S815.4[农业科学—畜牧学]