摘要
[Objective] The aim of this study was to investigate the production performance of three pig cultivars through their fattening performance, carcass traits and meat quality for facilitating its application in practical production. [ Method] Three pig cultivars were selected including Yesong （ F1 hybrid of pure-bred wild boar cross with songliao black sow as female parent） hybrid pigs, D × L × Y pigs from three-way cross and L x Y pigs from two-way cross. The test pigs in early period （before 60 kg） and late period （after 60 kg） were all fed with diets of the same nutritional level by free feeding and drinking water. The pre-test period was 3 d, while the test period was 120 d. Every 30 days, pigs with an empty stomach were weighed on morning, and when fattening to 120 d, five pigs with good growth and development in each cultivar were selected for slaughter to determine carcass traits and meat quality. [ Result] Under the same diets and feeding conditions, average daily gain and weight gain in the whole period of pigs from three-way cross were all significantly higher than those of pigs from two-way cross, and also extremely higher than those of Yesong pigs. There was no difference in dressed carcass percentage, backfat thickness and proportion of hind leg among three hybrid combinations. Lean meat percentage and eye muscle area of pigs from three-way cross and pigs from two-way cross were all significantly higher than those of Yesong pigs. Yesong pigs had relatively darker carnation, but marble vein （P〈0.05） and water loss rate （P〈0. 01 ） of Yesong pigs were relatively fewer than those of pigs from two-way cross and pigs from three-way cross. Shear force of Yesong pigs was significantly higher than that of pigs from two-way cross and pigs from three-way cross, [ Conclusion] Yesong hybrid pigs make full use of heterosis between wild pigs and Songliao black pigs for improvement of its meat quality, but some values of major economic traits in Yesong hybrid pigs is still lower than those in pigs from thrae-way cross and pigs from two-way cress.
[Objective] The aim of this study was to investigate the production performance of three pig cultivars through their fattening performance, carcass traits and meat quality for facilitating its application in practical production. [ Method] Three pig cultivars were selected including Yesong （ F1 hybrid of pure-bred wild boar cross with songliao black sow as female parent） hybrid pigs, D × L × Y pigs from three-way cross and L x Y pigs from two-way cross. The test pigs in early period （before 60 kg） and late period （after 60 kg） were all fed with diets of the same nutritional level by free feeding and drinking water. The pre-test period was 3 d, while the test period was 120 d. Every 30 days, pigs with an empty stomach were weighed on morning, and when fattening to 120 d, five pigs with good growth and development in each cultivar were selected for slaughter to determine carcass traits and meat quality. [ Result] Under the same diets and feeding conditions, average daily gain and weight gain in the whole period of pigs from three-way cross were all significantly higher than those of pigs from two-way cross, and also extremely higher than those of Yesong pigs. There was no difference in dressed carcass percentage, backfat thickness and proportion of hind leg among three hybrid combinations. Lean meat percentage and eye muscle area of pigs from three-way cross and pigs from two-way cross were all significantly higher than those of Yesong pigs. Yesong pigs had relatively darker carnation, but marble vein （P〈0.05） and water loss rate （P〈0. 01 ） of Yesong pigs were relatively fewer than those of pigs from two-way cross and pigs from three-way cross. Shear force of Yesong pigs was significantly higher than that of pigs from two-way cross and pigs from three-way cross, [ Conclusion] Yesong hybrid pigs make full use of heterosis between wild pigs and Songliao black pigs for improvement of its meat quality, but some values of major economic traits in Yesong hybrid pigs is still lower than those in pigs from thrae-way cross and pigs from two-way cress.
基金
funded by National key Technology R & D Program (2008BADB2B02)
