Anesthetic protocol in a greylag goose (Anser anser) undergoing prolapse reduction and cloacoplasty

Abstract

The objective of this study was to describe an anesthetic protocol in a greylag goose (Anser anser), using propofol as the induction agent, for surgical prolapse reduction and cloacoplasty. The goose was considered suitable for surgery after disease diagnosis and a thorough pre-anesthetic evaluation. Pre-anesthetic medication included intramuscular administration of butorphanol, midazolam, and ketamine at doses of 0.5, 0.5, and 9 mg kg-1, respectively. Subsequently, intravenous administration of propofol at 5 mg kg-1 over one minute allowed for airway intubation but did not achieve the surgical plane of anesthesia. Two additional one-minute boluses of propofol were administered, but the goose still exhibited paddling and caruncle retraction reflexes. The effective propofol dose to reach the ideal surgical plane was 10 mg kg-1 min-1 over 5 minutes, without apnea events, with a post-induction decrease in systolic blood pressure. Using propofol as anesthetic agent was satisfactory and suitable for the procedure and safe for the animal, indicating its potential as an alternative to inhalation agents for both optimizing anesthetic induction and simple, short-duration procedures under conditions contraindicating inhalant agents.