Comparison of Muscle Fiber Characteristics,Nutritional Components and Texture Quality between Duroc(American)and Fengjing Crossbred F1 Pig and Fengjing Pig
The study focused on comparing the muscle fiber characteristics,nutritional components,and texture quality in the longi-tudinal dorsal muscle(LT)between 6-month-old Duroc(American)and Fengjing crossbred F1 Pig and 8-month-old Fengjing pigs,in order to providing essential insights for the utilization and breeding of Fengjing pigs.Results indicated that Fengjing pigs had lower LT muscle fiber density(P＜0.01)but larger myofibril diameter(P＜0.05)and longer LT sarcomere length(P＜0.01)com-pared to Duroc and Fengjing crossbred F1 Pig.Additionally,Fengjing pigs exhibited higher levels of 4 essential amino acids(Trp,Thr,Leu and Lys)and 9 non-essential amino acids(Asp,Ser,Glu,Pro,Gly,Ala,Tyr,Arg and Hyp)in their muscles(P＜0.05),as well as higher non essential amino acids and total amino acid contents(P＜0.05).Notably,the proportion of bitter amino acids in Duroc and Fengjing crossbred F1 Pig was lower than that in Feng Jing pigs(P＜0.05).The study found that the C17:0 content,4 polyunsaturated fatty acids(C18:3,n-6,C18:3,n-3,C20:3,n-6 and C20:4,n-6),and total polyunsaturated fatty acids content in the muscles of Fengjing pigs were significantly higher than those of Duroc and Fengjing crossbred F1 Pig(P＜0.05).On the other hand,the content of 2 monounsaturated fatty acids(C18:1,n-9c,and C20:1)and total monounsaturated fatty acids content in the muscles of Duroc and Fengjing crossbred F1 Pig were significantly higher than those of Fengjing pigs(P＜0.05).Fengjing pigs exhibited lower muscle hardness compared to Duroc and Fengjing crossbred F1 Pig(P＜0.01),but showed better cohesiveness and resilience(P＜0.01).It can be seen that the amino acid nutrition of Fengjing pig pork is rich,the content of bitter amino acid and polyunsatu-rated fatty acid is prominent,and the texture quality is better than that of Dufeng hybrid F1 pig.The muscle fiber density increased and the content of monounsaturated fatty acids in muscle increased significantly after crossbreeding between Fengjing pig and Duroc pig.
Duroc and Fengjing Crossbred F1 PigFengjing pigMuscle fiberNutritional componentsTexture quality
万方数据
维普
