舍饲型合作猪胴体性状相关性分析  

Analysis on Carcass Quality and Correlation Coefficient of Carcass Traits of Hezuo Pig in Shelter Feeding

作　　者：关红民[1] 刘孟洲[2] 滚双宝[2] 

机构地区：[1]甘肃畜牧工程职业技术学院,甘肃武威733006 [2]甘肃农业大学,甘肃兰州730070

出　　处：《家畜生态学报》2009年第6期40-43,65,共5页Journal of Domestic Animal Ecology

基　　金：甘肃省科技支撑计划项目(0804NKCA065);甘肃省"十五"科技攻关项目(2GS032-A41-002)

摘　　要：选择四个屠宰体重区间对舍饲型合作猪12个胴体性状相关性进行了研究。结果表明：2530 kg（即6月龄）屠宰,瘦肉率59.62%,屠宰率66.32%,具有皮薄（0.5 cm）、背膘薄（0.797 cm）、眼肌面积大（16.15 cm2）的特点,表明合作猪属于优良的瘦肉型小型猪。经分析可知,宰前活重与胴体重、眼肌面积,胴体重与屠宰率、眼肌面积呈极显著正相关（P〈0.01）;宰前活重与屠宰率、背膘厚、骨率,胴体重与背膘厚、骨率,屠宰率与眼肌面积,背膘厚与眼肌面积,皮厚与后腿比例,眼肌面积与骨率,瘦肉率与皮率呈显著正相关（P〈0.05）;背膘厚与瘦肉率,后腿比例与含脂率,瘦肉率与骨率存在显著负相关（P〈0.05）。12个胴体性状指标经主成分分析可获得5个主成分因子,可代表胴体性状总变异量的87.025%。Four intervals of slaughter weight were used to study carcass traits for Hezuo pig raised in piggery. The results indicated that ham fatness was ideal and meat performance was high from 25 kilograms to 30 kilograms. Its lean percentage was 59. 625 percent and dressing percentage was 66.36 percent. Thin skin （0.5 cm） ,low back fat thickness （0. 797 cm） and large eye muscle area （16.15 cm2） were its characters. So it belonged to a miniature kind of excellent lean-type pig. Slaughter weight and eye muscle area, slaughter weight and carcass weight, carcass weight and slaughter rate, carcass weight and eye muscle area showed extremely significant positive correlation （ P 〈0.01 ）; Slaughter weight with slaughter rate, back fat thickness and the rate of bone, the carcass weight with back fat thickness and the rate of bone, the slaughter rate with eye muscle area,lean meat percentage and skin rate were significantly positive correlative（ P 〈0.05 ） ; back fat thickness and lean percentage, ham percentage and the rate of fat, lean meat percentage and bone percentage showed significantly negative correlation（ P 〈 0.05 ）. Five principal com- ponent factors were obtained from principal component analysis on twelve earcass traits,which can represente 87. 025 percent of total variation.

关 键 词：合作猪 屠宰率 瘦肉率 主成分分析 

分 类 号：S811.5[农业科学—畜牧学]