当前位置: 首页 > 文章 > 应用猪胴体部分分离性状及度量性状估测胴体瘦肉率的研究 四川农业大学学报 1992 (1) 93-104
Position: Home > Articles > ESTIMATION OF LEAN MEAT CONTENT FROM THE MAIN CUTS DISSECTION AND CARCASS MEASUREMENTS Journal of Sichuan Agricultural University 1992 (1) 93-104

应用猪胴体部分分离性状及度量性状估测胴体瘦肉率的研究

作  者:
李学伟;张俊生;肖永祚
单  位:
四川农业大学畜牧系
关键词:
猪(49ME);相关(30031FE32A);品种(49DA);胴体(49MC)
摘  要:
用四川本地猪28头、外种猪12头及其二元杂交猪86头和三元杂交猪头36共计162头,研究了胴体瘦肉率与胴体部分分离性状及胴体度量性状间的相关关系。结果表明:应用胴体部分分离性状特别是三大块骨肉率及腿臀骨肉率,估测胴体瘦肉率的精确性极高(R>0.98,Sy.x<1.0),完全可以替代传统的胴体全分离法;应用胴体度量性状主要是最大膘皮厚、6-7肋膘皮厚及最后肋骨处距背中线6.5厘米的眼肌厚和膘皮厚估测胴体瘦肉率的精确性也高(R>0.9,Sy.x<2.3),且简单易测可用于实际估测;品种间性状的平均数、标准差以及间接性状与胴体瘦肉率的简单和复相关系数均存在显著差异。杂交猪的标准差及简单和复相关系数大于纯种猪。总群体的标准差及的简单和复相关系数均高于单一品种,品种效应显著,且在胴体度量性状与瘦肉率的相关中品种效应较大,在胴体部分分离性状与瘦肉率的相关中则较小。
译  名:
ESTIMATION OF LEAN MEAT CONTENT FROM THE MAIN CUTS DISSECTION AND CARCASS MEASUREMENTS
作  者:
Li Xuewei et al (Sichuan Agricultural University, Yaan, Sichuan, China, Zip Code: 625014)
关键词:
HOGS; CORRFLATION; CULTIVARS; CARCASS.
摘  要:
Relationships have been analysed between lean meat content of the carcass and parameters of its dissection into the main cuts and its measurements in 28 Local Breed (LB)pigs , 12ForeignBreed (FB) pigs ,and Crossbred 86 FB×LB pigs and 36 FB×FB×LBpigs .The parameters of the main cuts dissection allow a most precise estimation of lean meat content. The most precise predictor is the proportion of the valuable cuts; the carcass meassurements allow also an accurate estimation of the lean meat content. The most important are shoulder fat thickness, fat thickness at 6/7rib, and muscle and fat thickness at 6.5 cm from the dorsal midline at the last rib;there are significant differences between genetic groups in means, standard deviations (s.d),corresations(r)and multiple correlations(R).S.d.,r and R are clearly lower in purebred than in crossbred,and in individual genetic group than total population without considering genetic groups. Thus a significant breed effect exists in correlations and regressions. The parameters of main cuts have less breed effect in their correlations and regressions with the lean meat percentage than carcass measurements.

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