The eating quality of pork from Meishan and Large White pigs and their reciprocal crosses

Two studies, one using a trained taste panel and the other a consumer panel, were carried out to evaluate the eating quality of the Meishan breed. Entire male and female pigs of four genotypes: purebred Meishan (MS) and Large Wliite (LW) and the reciprocal crosses (MS♂ × LW ♀ and LW♂ × MS♀) were reared in single sex groups and given a commercial diet ad libitum from 35 kg live weight to slaughter at around 70 kg. For the taste panel, a loin joint was roasted under standard conditions and samples of fat and lean were presented to the panellists. There were no statistically significant differences between the genotypes for tenderness, juiciness, flavour, odour, incidence of boar taint or overall acceptability. Purebred Meishan samples had a higher incidence of abnormal odours but lower cooking losses and shear force values than the other three genotypes. Meat from gilts was judged to be significantly more tender and juicy, with a weaker pork flavour but a lower incidence of abnormal flavours and higher overall acceptability than that from boars. There were statistically significant interactions between genotype and sex for tenderness, abnormal odour and shear force which mainly involved the purebred Meishans and were of little practical significance. In the consumer study, loin chops and leg joints from purebred LW and the two crossbred genotypes were evaluated. Households received two samples of the same type of joint from the same sex in two separate distributions. Each household received an LW sample and a sample from one of the crossbred genotypes. In general, consumers found the appearance of the joints from the three genotypes to be equally acceptable. For eating quality, the within-household deviations of the crossbred compared with the LW suggested that MS♂ × LW♀ samples were considered to be of better eating quality, particularly for juiciness (deviation -0·71, s.e. 0·24, P P P

[1]  T. R. Carr,et al.  Carcass and muscle characteristics of Yorkshire, Meishan, Yorkshire x Meishan, Meishan x Yorkshire, Fengjing x Yorkshire, and Minzhu x Yorkshire pigs. , 1993, Journal of animal science.

[2]  T. Wheeler,et al.  Meat Palatability of Duroc and Chinese First-Cross Barrows , 1992 .

[3]  C. Haley,et al.  Genetic components of growth and ultrasonic fat depth traits in Meishan and Large White pigs and their reciprocal crosses. , 1992 .

[4]  C. Haley,et al.  Genetic components of carcass and meat quality traits in Meishan and Large White pigs and their reciprocal crosses , 1992 .

[5]  J. Crouse,et al.  Effect of ractopamine on growth, carcass traits, and fasting heat production of U.S. contemporary crossbred and Chinese Meishan pure- and crossbred pigs. , 1991, Journal of animal science.

[6]  A. Suzuki,et al.  Carcass composition and meat quality of Chinese purebred and European × Chinese crossbred pigs. , 1991, Meat science.

[7]  K. Koonce Mixed-Model Least Squares and Maximum Likelihood Computer Program (LSMLMW PC-1 Version) , 1990 .

[8]  C. Haley,et al.  Genetic components of litter size in Meishan and Large White pigs and their crosses. , 1990 .

[9]  G. Monin,et al.  Eating quality of meat from European × Chinese crossbred pigs. , 1989, Meat science.

[10]  J. Caritez,et al.  Estimation of crossbreeding parameters between Large White and Meishan porcine breeds. III. Dominance and epistatic components of heterosis on reproductive traits , 1993, Genetics Selection Evolution.

[11]  F. Bazer,et al.  Conceptus development in large white and prolific Chinese Meishan pigs. , 1988, Journal of reproduction and fertility.

[12]  A. Kempster,et al.  The effects of fat thickness and sex on pig meat quality with special reference to the problems associated with overleanness 1. Butcher and consumer panel results , 1986 .

[13]  J. Wood,et al.  The effects of fat thickness and sex on pig meat quality with special reference to the problems associated with overleanness 2. Laboratory and trained taste panel results , 1986 .

[14]  C. Dupont,et al.  L'expérimentation sur le porc chinois en France I. Performances de reproduction en race pure et en croisement , 1983, Génétique, sélection, évolution.