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This study was conducted to develop new crossbred pig using Korean native pig and Duroc. Fifteen pigs of pure Duroc (D) and 26 crossbred gilts (15 of DK1 and 11 of DK2) were reared until 195 ± 5 days old, then slaughtered at local slaughterhouse. Pork loin was gathered and vacuum packed from left carcass after 24 h of slaughter to analyze meat quality traits, such as color, pH, water holding capacity (WHC), cooking loss and shear force (SF), and free fatty acid composition. Live weight and carcass weight of Duroc and DK1 were 119.1±8.7 / 82.91±6.1kg and 116.3±6.3 / 80.91±4.4 kg, respectively, and it was significantly higher than those of DK2 (104.7±8.4 / 71.36±5.7 kg) (p 0.05). DK1 showed the highest monounsaturated fatty acids (MUFAs) contents of 51.45±2.0% and DK2 showed the highest polyunsaturated fatty acids (PUFAs) contents of 8.98±1.4%, however there was no significantly difference in PUFA/SFA ratio between pig groups (p>0.05). Duroc and DK2 contain significantly higher amount of linoleic (7.99±1.2 and 8.11±1.3%, respectively) and linolenic acid (0.43±0.1 and 0.44±0.1%, respectively) than DK1, and DK1 contains significantly higher amount of oleic acid (47.32±1.8%) than others (p<0.05).

Comparision of carcass characteristics, meat quality, and fatty acid profiles between Duroc and corssbred pigs (Duroc × Korean native pig)