Companison of pig’s fattening effect and meal qualities of different three-way crosses combination

Duroc and Strain A were used for the terminated paternity and formed 8 crossing combinations with (L×Y),(Y×L),(strain B×strain C), (Y×strain C) which were used for female line respectively. Fattening test living weight 20～90 kg, slaughter determination and analysis of carcass qualities showed daily gain of Duroc ×(L×Y) combination is the highest (704 g) during fattening periods, and it was more higher than Duroc×(strain B×strain C), strain A×(L×Y) and strain A×(Y×strain C). Moreover, it showed very significant difference with strain A×(Y×strain C). The mixium of feed to gain ratio combination is strain A×(L×Y). combination D×(L×Y) and Duroc×(Y×strain C) were determined preliminarily to be desired patter of three-way crosses according to comparing meal quality of better fattening performance combination.