Intravenous injections of cholecystokinin and caerulein suppress food intake in domestic fowls.

As with various mammals, cholecystokinin (CCK) and caerulein have short-term, dose-related, inhibitory effects on feeding when injected i.v. in domestic fowls. It is estimated that in meals lasting more than about 6 min there could be time for ingested food to reach the duodenum and for the release of CCK to act as a satiety signal.