Sable antelope (), a large, dominant species, often require chemical immobilization for captive management. Despite several recorded protocols, limited objective or subjective data are available to guide chemical immobilization of this species. This study retrospectively compared immobilization drug combinations of carfentanil-xylazine (CX), thiafentanil-xylazine (TX), etorphine-xylazine (EX), carfentanil-acepromazine (CA), and butorphanol-azaperone-medetomidine (BAM) for healthy sable antelope at one institution. Clinically applicable physiologic measures, subjective ratings, and timing of anesthetic milestones of 161 events for 107 individuals revealed the following statistically significant findings ( < 0.05). Induction ratings were best for TX, highest degree of muscle relaxation occurred with BAM and TX, and anesthetic ratings were best for TX and EX. Time to recovery was longest and complications 2.56 times more likely with CX. Time to recumbency was shortest in TX. Heart rate was highest in CA and lowest in BAM. For immobilization procedures, this study suggests TX would be the preferred combination for . However, all drug combinations evaluated can be used successfully to immobilize and certain combinations may be situationally preferred based on desired muscle relaxation, expected induction or recovery times, or anticipated procedure length.
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