[Drug metabolizing activity in birds: compared activity of liver and duodenum in four species (author's transl)]

Drug-metabolizing activity of liver and small intestine (duodenum) was examined in birds (A. rufa, P. perdix, Ph. colchicus, G. gallus) with 4 substrates (aniline, aldrin, p-nitroanisole, aminopyrine). In order of decreasing hepatic activity: P. perdix greater than Ph. colchicus greater than A. rufa greater than G. gallus. For all species, intestinal activity is higher than in rodents, especially with aldrin as substrate.