影响杜长大商品猪胴体评级的性状分析  

Factors influencing classification of DLY pig carcass

作　　者：和军飞 黄涛[1] 孙艳洋 朱生巍 孙晓梅[1] 高若男 孙义姗 谢苏 HE Junfei;HUANG Tao;SUN Yanyang;ZHU Shengwei;SUN Xiaomei;GAO Ruonan;SUN Yishan;XIE Su(College of Animal Science and Technology,Shihezi University,Shihezi 83200,China;Xinjiang Tiankang Animal Husbandary Science&Technology Co.Ltd.,Changji 831100,China)

机构地区：[1]石河子大学动物科技学院,新疆石河子832000 [2]新疆天康畜牧科技有限公司,新疆昌吉831100

出　　处：《畜牧与兽医》2020年第5期1-6,共6页Animal Husbandry & Veterinary Medicine

基　　金：兵团科技创新人才计划项目(2020CB018);国家生猪产业技术体系(CARS-35)。

摘　　要：为研究影响杜长大商品猪胴体评级的相关性状,选择206头活重在90~150 kg的商品猪进行称重、活体背膘P2点测定、屠宰性能测定,测定指标包括:活体重、背膘厚、胴体重、肩膘、6-7肋间膘、最后肋膘、肉色、肋骨数以及胴体等级等主要性能指标,分析性状间的相关性,对不同等级的各胴体性状进行显著性检验,并建立胴体等级与其他性状指标间的回归方程。结果:宰前活重在109.43~116.70 kg、活体背膘厚度11.47~13.44 mm时,胴体评级最优(1~2级);随着宰前活重的增加,肩膘厚、6-7肋间膘厚、最后肋膘厚随之增加,肉色值也有增加的趋势;胴体等级与活体背膘、肩膘厚、6-7肋间膘厚、最后肋膘厚、肉色、性别等性状具有显著的相关性。本研究为指导商品猪饲养管理、商品猪评级、改善养猪经济效益提供了参考依据。In order to identify the traits having effects on classifying the carcass of commercial DLY pigs,206 pigs of this breed with a live weight of 90-150 kg were selected to weigh their live body weight,measure their live back fat of P2 point,and conduct slaughter measurement.Totally,eight carcass traits were measured,including live body weight,carcass weight,live body back fat thickness,carcass back fat thickness at shoulders,6-7 intercostal hernia and final ribs,meat color,the number of ribs,and carcass grade.The correlations between these traits were analyzed,the differences between these traits at various carcass grades were compared,and a regression equation between carcass grade and other traits was established.The results showed that pigs with a live body weight of109.43-116.70 kg,and with live back fat thickness of 11.47-13.44 mm,could be given the best carcass rating(grades 1-2).With body weight increasing,the carcass back fat thickness at shoulder,6-7 intercostal hernia and the last rib tend to be higher,and the color value of the meat increased.The grade of carcass showed a significant correlation with the live back fat thickness at shoulder,6-7 intercostal hernia and the last rib,and meat color.This paper would provide a reference for the management of commercial pigs,and be helpful in improving the carcass rating of commercial pigs and their economic benefits.

关 键 词：商品猪 胴体性状 体重 胴体等级 

分 类 号：S828[农业科学—畜牧学]