Blood collection and surgical procedures for the laboratory opossum (Monodelphis domestica).

Procedures have been developed for collecting blood samples from the laboratory opossum (Monodelphis domestica) and for conducting survival surgery on adults. Blood samples up to 1 ml were collected routinely by cardiac puncture of animals anesthetized by inhalation of methoxyflurane or halothane with minimal risk; however, halothane required more careful monitoring. Surgical procedures such as partial hepatectomy unilateral hysterectomy, and tail wound repair were safely accomplished on animals anesthetized with methoxyflurane. Other surgical procedures including enucleation and intra-abdominal vasectomy were carried out successfully with an inhalation/injection (pentobarbital-atropine-ketamine) protocol that was successful also for recipient surrogate females in embryo transfer experiments.