Abstract: Feeding effect of perilla seed extracts added in formula feed on growing-finishing pigs (Yordshire ×Landrace ×Duroc, 20～90 kg) was investigated by the single factor test. The additive amount of perilla seed extracts were 150, 250 and 350 g·t-1. The results indicated that growth and fattening, meat quality and immunity of pigs were promoted to a certain extent with the perilla seed extracts addition amount of 250 and 350 g·t-1, but there was no significant difference among each group(P>0.05)．

Key words: pigs, perilla seed extracts, feeding effect