不同类型肥育猪生长性能及胴体性状的研究

作者主要探讨不同类型猪在生长性能与肌肉品质的差异。挑选50 kg 左右的鄂西黑猪(脂肪型)、长大二元杂交猪(瘦肉型)、长♂×(野♂×鄂♀) ♀(中间型)三元杂交阉公猪各24头,饲养至100 kg左右屠宰,每个品种屠宰6头,进行生长性能、胴体性状与肉质性状的测定。研究结果表明,长大二元杂交猪的生长速度显著高于鄂西黑猪(P<0.05),而与长野鄂杂交猪差异不显著(P>0.05)。长大二元杂交猪的屠宰率、瘦肉率和眼肌面积显著高于鄂西黑猪和长野鄂杂交猪(P<0.05),而料重比、背膘厚显著低于鄂西黑猪(P<0.05)。长大二元杂交猪的肌肉pH2、滴水损失和剪切力显著高于鄂西黑猪,而肌肉评分显著低于鄂西黑猪(P<0.05),而长野鄂杂交猪的肉质与长大二元杂交猪和鄂西黑猪差异均不显著(P>0.05)。

Study on Growth Performance and Carcass Traits of Different Genotype Finishing Pigs

The objective of the experiment was to study the growth performance and meat quality of difference type pigs. 24 pigs of E-Xi (EX)black boars(Lard type), Landrace-York(LY) hybridized pigs(Bacon type) and Chang-Ye-E(CYE) boars(Meat type) respectively about 50 kg were raised to 100 kg and then 6 pigs 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.