Abstract: Divided into two groups in random（groups ⅠandⅡ），twenty-four piglets were fed the dietary with 1.5% premix feed from different sources for 105 days in three stages. The results showed that the average daily gain of groupⅠandⅡ was 856 and 867 grams respectively and average ratio of feed to gain was 3.19 and 3.15 respectively.There was no significant differences (P>0.05) between them. However,the group Ⅰhad better performance: meat color, pH, marbling, muscle tenderness, water nolding capatity and intramuscular fat was better than group Ⅱ by 10.00%, 3.68%, 16.67%, 9.38%, 6.71% and 13.07%, which was obviously different from group Ⅱ(P<0.05). Though the average premix cost for one kilo-gram gain was 0.79 and 0.72 yuan respectively. The cost of groupⅠwas rised by 9.70% comparing with group Ⅱ, a pig need much feed cost than groupⅡby 5.6yuan,but this product would have extensive use in furure.

Key words: premix feed; growing fattening pig; daily gain; ratio of feed to gain; meat quality