关键词: DLYM; 梅山猪; 屠宰性能; 肉质性状

Abstract: To study the carcass performance and meat quality of the hybrid fatten pig(DLYM) combined with Duroc(D),Landrace(L),Yorkshire(Y) and Meishan(M). We had systematically measured the carcass characters and meat quality. The results indicated that DLYM hybrid fatten pig had a good carcass characteristics and meat quality. Such as the percentage of lean meat was 53.97%±6.82%; mean of the thickness of backfat was 3.32 cm±0.52 cm; the area of longissimus dorsi was 46.01 cm²±3.14 cm²; pH₁ at 45 min postmortem was 6.69±0.52; pH₂ at 24 h postmortem was 5.68±0.74; the meat lightness at 45 min postmortem was 41.59±4.20; the meat lightness at 24 h postmortem was 49.42±5.61; marbling was 2.33±0.07; drop loss was 3.58%±0.25%; shear force was 4.82 kg±1.36 kg. In conclusion, DLYM hybrid fatten pig had a appropriate lean meat percentage and an outstanding carcass and meat quality characters, which was special adapt to the demand for high quality pork in southwest China and reached the balanced development between carcass characters and meat quality. It is a concise and efficient type of high-quality hybrid combination mode.

Key words: DLYM; Meishan pig; carcass performance; meat quality