四川省商品肉猪胴体品质变化的研究

利用FOM肉脂仪分别于2002年10月和2004年10月对四川省内1988头和4553头商品肉猪的胴体品质进行了屠宰线上的随机抽样测定。测量性状为猪左半胴体最后肋骨处背膘厚(P2)和倒数第3、4肋骨间背膘厚(RF)及眼肌厚度(RM),瘦肉率由相关回归公式估测,并随机抽取40头个体测定其部分肉质性状。分析了不同年度、不同胴体等级间各性状的变异程度、相关性及变化趋势,并与国外相关数据进行比较。结果表明:两年来四川省商品肉猪的胴体品质有了明显提高,瘦肉率提高了0.48%,年均提高0.24%,胴体重提高了4.73kg,年均提高2.37kg,且肉质良好。

Study on the Tendency of Commercial Swine Carcass Quality in Sichuan Province

In this study, the percentage of lean meat (LEAN), the back fat thickness at last rib (P2), the back fat thickness between the third/fourth last rib (RF) and loin thickness (RM) were measured by Fat-O-Meat’er (FOM) on two random samples of 1988 and 4533 commercial swine carcasses during October 2002 and October 2004 at Sichuan province. Each carcass was weighted (WT). The meat quality traits on the random samples of 40 carcasses were measured during October 2004. The average data, variation and correlation among carcass traits were analyzed by SAS system and compared with the foreign data. The results indicate that the commercial swine carcass quality has obtained a great improvement in Sichuan province during 2002～2004, the LEAN increases 0.48%, average 0.24% per year, the WT increases 4.73kg, average 2.37kg per year, moreover, the meat quality is good.