A multicentre, prospective, randomised, blinded clinical trial to compare some perioperative effects of buprenorphine or butorphanol premedication before equine elective general anaesthesia and surgery

摘要

Reasons for performing study: Buprenorphine, a l-agonist opioid, has recently been licensed for equine use, but butorphanol, a kappa-agonist opioid, is more commonly used in horses. The effect of the 2 opioids has not previously been compared in a large clinical study.