Evaluation of the four breeds in synthetic line of Jiaxing Black Pigs and Berkshire for meat quality traits, carcass characteristics, and flavor substances

Abstract

To investigate breed characteristics and the effect of hybridization of Jiaxing Black Pig (JBP) with Western breeds, the carcass and meat quality traits and flavor substances such as inosinic acids (IMP), intramuscular fat (IMF) in longissimus muscle (LM) from five breeds including JBP, Berkshire, Berkshire × JBP (BJBP), Duroc × Berkshire × JBP (DBJBP), Duroc × Landrace × JBP (DLJBP) were compared in this study. It was found that water holding capacity (WHC) of LM in JBP was significantly higher than that in the other strains (p < 0.01). Dressing out percentage and lean percentage of JBP were both significantly lower than those in the others (p < 0.01) in connection with their lighter carcass weight and higher subcutaneous fat percentage (p < 0.01). Heterosis was realized in DJBP, DBJBP, and DLJBP since their carcass weight, lean percentage, and loin eye muscle area (LEMA) were markedly higher when compared to JBP, whereas lower than those in Berkshire. Among the breeds, the content of IMF and IMP in the LM of JBP were the highest. These traits were also palpably improved in the crossbreds, especially for DBJBP, of which pork was considered outstanding for containing the most abundant essential amino acids (EAA) and total amino acids (TAA).

The Indigenous Prestice Black-Pied Pig Breed Differs from a Commercial Hybrid in Growth Intensity, Carcass Value and Meat Quality

“…These results indicate that there are significant differences among individual local breeds and the composition of the carcass can be affected by the environment in which the breeds were reared [28]. Besides, a great number of previous studies differ significantly in the slaughter weight of the evaluated groups of pigs [21,29]. For an objective evaluation of pig carcasses or for launching on the market, the lean meat content must be determined.…”

Comparative analysis of gene expression profiles in differentiated subcutaneous adipocytes between Jiaxing Black and Large White Pigs

“…Jiaxing Black pig (JX pig), a Chinese indigenous pig breed in the Taihu Lake region, is famous for its early sexual maturity, high fecundity, crude feed tolerance, good hybridization ability and plump muscles with a high content of IM fat. Products derived from JX pigs have been developed into a wellrecognized commercial pork brand in China [24]. However, the redundant SC fat deposition decreases the growth efficiency and results in profit reduction.…”

Novel Vitronectin Variations and Their Comparative Analysis in Six Porcine Breeds

“…The difference between American Duroc and Berkshire seemed not to be small. American Duroc is mainly bred for the purpose of high growth speed and reduced backfat thickness [18], while Berkshire is mainly bred for the meat quality trait, such as the content of IMF [19]. Therefore, the sustaining artificial selection pressure based on different breeding targets and feeding environment may affect the vitronectin gene region.…”