The influence of dietary lysine restriction during the finishing period on growth performance and carcass, meat, and fat characteristics of barrows and gilts intended for dry-cured ham production.

摘要: A total of 120 pigs [Duroc × (Landrace Large White); initial average BW: 100.3 ± 2.5 kg] were used to investigate the effects sex (barrows and gilts) dietary Lys restriction (7.0, 6.5, 6.0 g·kg(-1)) on growth performance carcass, meat, fat characteristics. Pigs intended for high-quality dry-cured ham from Spain (called Teruel ham), a minimum thickness at gluteus medius muscle (GM) is required (16 mm) carcasses be acceptable. Animals slaughtered when they reached 129.0 3.6 kg BW. There 6 treatments arranged factorially (2 sexes 3 concentrations) 4 replicates 5 per treatment. Barrows consumed more feed (P = 0.001) tended have less G:F 0.06) than gilts. Carcasses barrows fatter had heavier main trimmed lean cuts 0.008) greater proportion final acceptable was observed in gilts because percentage that fulfill depth GM 0.001). Meat content intramuscular 0.02) meat Also, subcutaneous PUFA 0.02). reduction concentration decreased ADG 0.004) ADFI pigs. In addition, backfat 0.007) 0.07) increased as decreased. The fulfilled feed, but this effect (sex Lys, P quality not influenced by We conclude different feeding programs with concentrations may needed production hams where carcass required.