瘦肉型猪组合配套杂交效果研究

为探索瘦肉型猪组合配套杂交方法和效果而进行试验.试验采用HN121(温氏杜洛克猪)、HN212(法系皮特兰♂×温氏杜洛克♀)为父本,以HN204(温氏大白♂×美系长白♀)为母本,对HN323(HN121×HN204)和HN424(HN212×HN204)两个组合配套进行研究.结果表明,HN424组合与HN323组合相比...

Study on the Effect of Hybridization of Lean Pig Combination

This experiment was carried out for the purpose of exploring the matching hybrid method and effect of lean pig combination. The experiment adopted HN121 (Wynn Duroc Pig), HN212 ( Pitland ♂×Wynn Duroc ♀) as the parent samples, and adopted HN204 (Wynn white ♂×the American white ♀) as the mother sample, to carry out matching hybrid test of two combinations of HN323 combination (HN121×HN204) and HN424 combination (HN212×HN204). The results showed that compared with HN323 combination, for HN424 combination, there were no significant differences in sows' litter size, live litter size, piglets birth weight, survival rate of 21-day old piglets and litter weight at 21-day old piglets between HN424 combination and HN323 combination (P>0.05), and the weight backfat thickness was 5.63% lower, the lean percentage was 4.95% higher (P<0.05), the eye muscle area was 33.08% larger(P<0.01), the carnation score was 7.19% lower (P<0.05), the marble grade was 11.30% lower (P<0.01), drip loss rate was 10.63% higher (P<0.01). The difference of other hereditary traits was not significant. Compared with HN204 binary parent line, for HN424 combination, daily weight-gain increased by 9.26% (P<0.05), backfat thickness decreased by 16.41% (P<0.01), feed-to-meat ratio decreased by 8.02% (P<0.05). Compared with HN204 binary parent line, for HN323 combination, daily weight-gain increased by 7.20% (P<0.05), backfat thickness decreased by 11.43% (P<0.01), and feed-to-meat ratio decreased by 5.35% (P<0.05). Therefore, it is believed that both quaternary hybrid combination and ternary hybrid combination had significant effect on "Large×Long" (HN204) binary hybridization in genetic improvement, "Pitland×Duroc×Large×Long" quaternary hybrid combination can significantly improve lean meat rate and eye muscle area, but meat color, marble grade, drip loss rate and other meat quality indicators changed low. Therefore, it is suggested that pig breed genes which can improve meat quality should be added into the matching hybridization of "Pitland×Duroc×Large×Long" quaternary hybrid combination.