南阳黑猪与长白猪肉品质的差异性研究

Research on the difference of pork quality between Nanyang black pigs and Landrace pigs

为了研究南阳黑猪与长白猪肉品质的品种间差异,试验选择28日龄断奶南阳黑猪与长白猪各18头,按品种分为2组,每组设3个重复,每个重复6头猪（公母各半）,进行为期180 d的饲养试验,经屠宰后测定两品种猪肉品质的差异。结果表明：南阳黑猪背最长肌L＊值、b＊值、胴体瘦肉率、眼肌面积、滴水损失均显著低于长白猪（P〈0.05）,熟肉剪切力极显著低于长白猪（P〈0.01）;a＊值、肉色评分、大理石纹评分、胴体脂肪率、肌内脂肪含量均显著高于长白猪（P〈0.05）;pH1值、pH24值二者之间差异不显著（P〉0.05）。说明南阳黑猪肉品质优于长白猪。

To detect the difference of pork quality between Nanyang Black pigs and Landrace pigs, a total of 36 weaned piglets （28 d, 18 Nan- yang black piglets vs. 18 Landrace） were divided into 2 groups according to differential swine breeds, each group contains 3 replicates with 6 piglets in each replicate （sex balance）. After the feeding experiment lasted for 180 days, pork quality differences of experimental piglets were investigated after slaughter. The results showed that compared with Landrace pigs, L ＊ , b ＊ value, carcass lean ratio, Longissimus muscle area, drip loss and shearing force of Nanyang pigs were significantly decreased （P〈 O. 05 ）. Whereas, a ＊ value, subjective color score, marbling score, carcass fat ratio and IMF were significantly increased（ P〈0.05 ）. And there was no significant difference between the two values of pHI and pH24（P〉0. 05）. The results indicated that the pork quality of Nanyang black pigs is better than that of Landrace pigs.