Abstract
The aim of this study was to compare sedation of sheep with acepromazine and buprenorphine or morphine. Twenty merino sheep received acepromazine (0.03mg/kg) with buprenorphine (0.02mg/kg, AB, n=10) or morphine (0.3mg/kg, AM, n=10) by intramuscular injection. Sedation was scored (SS) on a scale from 0 (no sedation) to 10 (heavy sedation). Response to restraint was scored (RS) on a scale from 0 (agitated) to 4 (relaxed). Three independent blinded observers and a single blinded observer determined the SS and RS, respectively. The SSs were summed (maximum 30). Data were compared using a t-test. Data is mean±SD (95% confidence interval). Each group comprised 2 wethers and 8 ewes. There was no difference between the AB and AM groups: weight 44±3.1kg and 44.7±3kg (p=0.58); SS 4.6±3.2 (2.4–6.9) and 6.6±3.5 (4.1–9.1) (p=0.21); and RS 1.6±1.3 (0.5–2.7) and 2±1.5 (0.7–3.3) (p=0.6). No adverse effects of the drugs were observed. Sedation with AB or AM at these doses is similar in sheep without observed adverse effects.
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