Influence of slaughter weight on growth and carcass characteristics, commercial cutting and curing yields, and meat quality of barrows and gilts from two genotypes.

摘要: Pigs representing two crossbred genotypes, a breeding company hybrid (BCH) and three-breed cross (Hampshire x [Yorkshire Duroc]) (HYD) were evaluated at five slaughter weights (SLW) : 100, 115, 130, 145, 160 kg. A total of pigs grown in like-sex (barrows [B] or gilts [G]), like-genotype groups, with four pigs/group, from 60 kg live weight. corn-soybean meal-based diet was available on an ad libitum basis (15.8% crude protein, 3,300 kcal/kg ME). One-half the each group (80 pigs) slaughtered for carcass meat quality evaluation. Genotype BCH grew faster, had lower backfat depths loin lumbar regions, smaller eye area than HYD, but both groups similar gain :feed ratio. Few consistent genotype differences cutting curing yields observed. Differences between sexes growth traits generally agreement previous research ; however, magnitude small. There few nonlinear regressions involving SLW limited genotypes slopes linear regressions. Increases associated increases feed intake, depth area, minimal changes rate :feed. Percentage increased ham, shoulder, spare rib percentages decreased The weight trimmed, boneless cuts weight, percentage reduced. Curing belly Changes increasing relatively Longissimus lumborum fat content moisture These results suggest that modern can be up to impact performance, commercial yields, characteristics.