Determination of the effective dosage of tiletamine-zolazepam-ketamine-xylazine, with or without methadone, in dogs.

Objective: To determine the effective dosage of the combination tiletamine-zolazepam-ketamine-xylazine (TKX), with or without methadone, in dogs.

Study Design: Prospective, randomized, experimental study.

Animals: A total of 29 dogs.

Epidural administration of combinations of ropivacaine, morphine and xylazine in bitches undergoing total unilateral mastectomy: a randomized clinical trial.

Objective: To investigate the epidural administration of combinations of ropivacaine, morphine and xylazine in bitches undergoing unilateral mastectomy.

Study Design: Prospective, randomized, blinded, clinical study.

Animals: A total of 22 bitches scheduled to undergo unilateral mastectomy for mammary tumor excision.