종료웅돈이 비육돈의 도체성적 및 부분육 실중량에 미치는 영향

Abstract

Data of 369 commercial pigs produced from YorkshrexLancrace (YL F1) sows crossed with either Duroc (D), Berkshire (B) or BerkshirexDuroc(BD F1) as a terminal sire were used for the comparison of carcass garde and real retail cut yield. The crosses were performed between May, 2004 and May, 2006 at three interrlated farms belonging to the Gyeongam pork brand. The average carcass weight, carcass backfat thickness, carcass rate, AB grade ratio, lean meat yield were 84.78 ± 0.33 kg, 20.72 ± 0.237 mm, 76.25 ± 0.208%, 85.7% and 44.30 ± 0.158%, respectively. The average weights of real retail cut were 10.32 ± 0.062 kg belly, 4.17 ± 0.025 kg boston butt, 3.88 ± 0.022 kg rib, 8.40 ± 0.040 kg picnic, 15.15 ± 0.081 kg ham, 6.44 ± 0.043 kg loin and 0.94 ± 0.006 kg tender loin. In comparisons of carcass traits among cross types, carcass weights and backfat thicknesses of YL( )×B ( ), YL( )×B D( ) and YL( )×D ( ) were 85.73 ± 0.516 kg, 82.69 ± 0.788 kg and 84.79 ± 0.603 kg, respectively and 22.09 ± 0.356 mm, 20.33 ± 0.543 mm and 19.58 ± 0.415 mm, respectively. The YL( )×B ( ) cross showed the highest carcass weight and backfat thickness. The ratio of AB grade were 0.83 ± 0.030% in YL( )×B ( ), 0.97 ± 0.046% in YL( )×B D ( ) and 0.83 ± 0.035% in YL( )×D ( ), and the YL( )×B D( ) was higher than other two crosses. Weights of belly were 10.28 ± 0.092 kg in YL( )×B ( ), 10.59 ± 0.133 kg in YL( )×B D( ) and 10.25 ± 0.107 kg in YL( )×D ( ). Consequently, the YL( )×B D( ) cross showed the highest yield. In conclusion, there was no difference in carcass yield of commercial pigs derived from BD (F1) terminal sires with those from D terminal sires. However, weight of belly and AB grade ratio from BD (F1) terminal sires are higher than two others. Therefore, BD (F1) sire could be utilized as terminal one and contribute better profit for the pig industry.