Blood samples were obtained in the field by femoral vein puncture in bushy-tailed woodrats (Neotoma cinerea) and yellow-bellied marmots (Marmota flaviventris) that had been injected intramuscularly with ketamine hydrochloride. Dosages ranged from 50 mg/kg for marmots to 30 to 110 mg/kg for woodrats. Sedated animals were handled easily, and a volume of blood sufficient for hematological assays or electrophoresis could be collected.
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