民猪肌肉脂肪代谢酶活性与肌内脂肪含量关系的研究OA

In order to investigate the intrinsic relationship between the activity of muscle fat metabolism enzymes and intramuscular fat content in Min pigs,and to analyze its effect mechanism on the tenderness of muscle,in the experiment,Min pigs and Large White pigs with 95 kg body weight were selected as the research subjects,and the activities of fat metabolism enzymes(MDH,FAS,LPL,and HSL),and muscle IMF content,shear force were determined.Pearson correlation analysis was used to analyze the effects of fat metabolism enzyme activity on IMF content and muscle tenderness in Min pigs.The results showed that the content IMF and the activity of MDH,FAS and LPL in Min pigs was significantly higher than those in Large White pigs(P<0.05),while the shear force and HSL activity were significantly lower than those in Large White pigs(P<0.05).MDH activity in the muscle tissue of Min pigs was extremely significantly positively correlated with the IMF content(P<0.01),and significantly negatively correlated with the shear force(P<0.05).FAS activity was negatively correlated with the shear force(P<0.05).LPL activity was significantly positively correlated with the IMF content(P<0.05).HSL activity was significantly negatively correlated with the IMF content(P<0.05),and significantly positively correlated with the shear force(P<0.05).The results indicated that the synergistic regulatory pattern through enhancing the activity of fat enzymes(MDH/FAS/LPL)and inhibiting the activity of fat-breaking enzymes(HSL)could significantly enhance the IMF deposition capacity and improve the tenderness of meat quality in Min pigs.