The interaction effects of Duroc (D), Duroc×(Landrace×Large White) (D.LL), LargeWhite×DaWeiZi (L·DWZ), and DaWeiZi (DWZ) and three nutrition levels (high—H, medium—M and low—L) on performance and carcass and meat quality traits were studied in this paper.During performance test, pigs from 15 to 90 kg were fed on ad-libitum feeding regimes, averagedaily gain (ADG), feed conversion ratio and average daily feed intakes were measured. Carcasstraits, meat quality traits and the contents of amino acid o...