The Study On The Mechanism Of Excellent Meat Quality Of Hydrid Pigs

Trial1The effect of the ME activities on the meat qualityThe objective of the experiment is to study the relationship between muscular malic enzyme (ME) activities and meat quality. This experiment studied the difference of muscular malic enzyme activities and intramuscular fat (IMF) among E-Xi black boars, Chang-Ye-E hybrid boars and Landrace-York pigs. The results showed that the ME activities and IMF content and Backfat thickness of E-Xi black boars were higher than those of Chang-Ye-E hybrid boars and Large-York pigs(p<0.05). The meat traits of pH2, dropping loss and shear force in Large-York pigs were higher than those of E-Xi boars (p<0.05). The study of relationship showed that the ME activities had a significantly positive relation with IMF content and negative relation with dropping loss and shear force (p<0.05). But the ME activities had a insignificantly positive relation with meat color (p>0.05).Trial2The study of growth performance and carcass traits of different genotype finishing pigsThe objective of the experiment is to study the growth performance and meat quality of difference type pigs.24pigs of E-Xi (EX)black boars(Lard type), Landrace-York(LY) hybridized pigs(Bacon type) and Chang-Ye-E(CYE) boars(Meat type) respectively about50kg were raised to100kg and then6pigs each species were slaughtered to analyze the growth performance, carcass traits and meat quality. The results showed that the growth performance of LY pigs was higher than that of EX boars(p<0.05) and had a insignificant difference with CYE boars. The undressing percentage, lean percentage and eye lean area of LY pigs were higher significantly than those of EX boars and CYE boars and feed/gain ratio and backfat thickness were lower that EX boars(p<0.05). The meat pH2, drop loss and shear force of LY pigs were higher significantly than those of EX boars and meat color was lower than EX boars. The meat quality of CYE boars had an insignificant difference with LY pigs and EX boars.