Gastrointestinal motility and its regulation

Cineradiography and intraluminal pressure recordings, together with data from strain gauges and Ag/AgCl electrodes, have been used to evaluate gastrointestinal motility in fowl. Substantial differences exist with mammals. Gizzard and duodenal activities are closely in phase with one another, and intrinsic slow wave control is lacking although duodenal slow waves may be recorded. These slow waves may be more important in ileum, colon, and ceca. Extensive reverse peristalsis is apparent in both areas and considered normal for overall intestinal operation.