大约克猪背最长肌肌糖原含量与胴体品质及肉质相关分析

为分析大约克猪肌糖原含量与胴体品质及肉质的相关关系，将18头体重35 kg左右的大约克猪在相同条件下饲养，体重达100 kg时屠宰，测定肌糖原、胴体品质及肉质。结果表明，肌糖原含量与胴体品质及肉质性状间相关程度有强有弱，相关系数有正有负。肌糖原含量与部分胴体性状相关性显著，与瘦肉率显著正相关，相关系数为0.524（P〈0.05）；与脂肪率显著负相关，相关系数为-0.520（P〈0.05）。肌糖原含量与部分肉质性状相关性显著，如与pH1显著正相关，相关系数为0.613（P〈0.05），与其他肉质性状相关较弱。肌糖原含量与背最长肌甘氨酸和亚油酸含量极显著正相关，相关系数分别为0.598（P〈0.01）和0.621（P〈0.01）。

Correlativity Analysis of Longissimus Muscle Glycogen and Carcass Performance and Pork Quality of Yorkshire Pigs

This study investigated the relationships between longissimus muscle glycogen and carcass performance and pork quality of Yorkshire.18 Yorkshire pigs with BW 35 kg were fed with same diets,and slaughtered when their weight attained 100 kg.The results suggested that degrees of correlation between muscle glycogen and carcass traits and meat traits were strong or weak,correlation coefficients were positive or negative.The correlation between muscle glycogen and some carcass traits was remarkable.The glycogen content had remarkable positive relation to lean percent,the correlation coefficients was 0.524 （P〈0.05）.The glycogen content had remarkable negative relation to fat percent,the correlation coefficients was -0.520 （P〈0.05）.The correlation between muscle glycogen and some pork traits was remarkable.The glycogen content had remarkable positive relation to pH1,the correlation coefficients was 0.613 （P〈0.05）.The glycogen content had small relation to the other pork traits.The glycogen content had remarkable positive relation to Gly,the correlation coefficients was 0.598 （P〈0.01）.The glycogen content had remarkable positive relation to linoleic acid,the correlation coefficients was 0.621（P〈0.01）.