Effects of a Single Opioid Dose on Gastrointestinal Motility in Rabbits (): Comparisons among Morphine, Butorphanol, and Tramadol.

The aim of this study was to evaluate and compare the effects of single doses of butorphanol, morphine, and tramadol on gastrointestinal motility in rabbits () using non-invasive imaging methods, such as radiographic barium follow through and ultrasonographic contraction counts. Time-lapse radiographic and ultrasound examinations were performed before and after a single intramuscular dose of 5 mg kg butorphanol, 10 mg kg morphine, or 10 mg kg tramadol. Pyloric and duodenal contraction counts by ultrasonography and radiographic repletion scores for the stomach and caecum were analysed using a mixed linear model.

Influence of a single dose of buprenorphine on rabbit (Oryctolagus cuniculus) gastrointestinal motility.

Objective: To establish a noninvasive imaging protocol for rabbit gastrointestinal transit evaluation. To assess the effect of a single injection of buprenorphine on the digestive transit of rabbits via this new technique.

Study Design: Prospective, parallel study.