【摘要】 试验通过对64头皮杜×长大和18头皮杜×长蓝四元杂交配套系商品猪进行屠宰测定,以比较胴体和肉质性状的优劣,旨在为进一步从事优质猪肉的生产提供依据。结果表明:①在活体性状方面,皮杜×长蓝的活体肌内脂肪含量(intramuscular fat content,IMF)肩部最厚处背膘厚和最后肋背膘厚均极显著高于皮杜×长大(P<0.01),而屠体重和日增重极显著低于皮杜×长大(P<0.01);②在胴体性状方面,皮杜×长蓝的肩部最厚处背膘厚极显著高于皮杜×长大(P<0.01),胴体长和眼肌面积极显著低于皮杜×长大(P<0.01);③在肉质性状方面,皮杜×长蓝的IMF、pH1和大理石纹等指标均极显著高于皮杜×长大(P<0.01),肉色b指标极显著低于皮杜×长大(P<0.01),pH24 h和滴水损失显著低于皮杜×长大(P<0.05),同时皮杜×长蓝的嫩度比皮杜×长大更好;④2种配套商品猪的肉色评分均在3~4之间,属于正常肉色;pH1大于5.9,pH24 h小于6.0,表明肉质正常;皮杜×长大的IMF在1.5%~2.0%之间,皮杜×长蓝的IMF高于2.0%;2个品种的剪切力均小于4 kg,属于消费者喜欢的类型。更多还原

【Abstract】 Carcass and meat quality traits were determined by comparing 64 heads of( Pietrain×Duroc)( PD) ×( Langdrance× Largewhite)( LY) crosses with 18 heads of( Pietrain×Duroc)( PD) ×( Langdrance×Lantang)( LN) crosses in order to provide reference data on producing high quality pork. The results indicated that the PD×LN corsses were significantly higher than PD×LY crosses in the content of IMF,shoulder thickest backfat and the last rib backfat( P<0. 01) in live testing performance,while slaughter weight and daily gain were extremly significantly lower than the latter( P<0. 01). In the carcass traits,the shoulder thickest backfat of PD× LN crosses were extremly significantly higher than PD×LY crosses( P<0. 01),but lower in carcass length and longissimus muscle area( P<0. 01). In meat quality traits among IMF,pH 1,marbling and tenderness,the PD×LN crosses were better than PD×LY crosses( P <0. 01),but worse in fleshcolor b( P<0. 01),pH 24 h and drop lose( P<0. 05),at last both line crosses showed normal in meat color with score 3 to 4,and meat quality traits with pH 1 >5. 9 and pH 24 h <6,the IMF of the PD×LY was detected between 1. 5% to 2. 0%, the IMF value of the PD×LN crosses had exceed 2%,shear force of two breed was less than 4 kg. In conclusion,meat quality of the two crosses catered to consumer taste.更多还原