To examine the effects of xylazine, ketamine, diazepam anesthesia on clinical pathology parameters in sheep and goats, seven adult, healthy, non-pregnant Awassi sheep weighing 40-60 kg and seven adult, healthy non-pregnant Damascus breed goats weighing 35 to 55 kg were used. Anesthesia was induced using 0.1 mg/kg xylazine, 5 mg/kg ketamine, and 0.25 mg/kg diazepam as a single intravenous injection. Blood cell counts and plasma biochemical analysis were performed before anesthesia (T0), 2 h after recovery, 24 h after recovery, and 5 days later. Hematological analysis indicated that there was a significant increase in neutrophil percentages (P≤0.05) in sheep and goats at 2 h and 24 h after recovery. There was a mild lymphopenia and a significant leukocytosis at 24 h after recovery in both species. Packed cell volume was significantly increased at 24 h and at 2 h and 24 h after recovery in sheep and goats, respectively, while total red blood cell count was significantly decreased at 24 h after recovery in sheep and goats. There were no significant changes in hemoglobin, blood urea nitrogen, creatinine, total protein, and albumin concentrations. Glucose was significantly elevated at 2 h after recovery in goats only. Aspartate aminotransferase, alkaline phosphatase, and gamma-glutamyl transpeptidase were not significantly changed at any sampling point. It is therefore concluded that a combination of xylazine, ketamine, and diazepam can be used to induce short term anesthesia in sheep and goats with minimum effects on clinical laboratory parameters. © 2009 Springer-Verlag London Limited.