This study aimed to determine the metabolic profile of P. tajacu and correlate these values ​​with the animals’ sex and age. We collected 63 blood samples from a herd of peccaries in Mossoró northeastern of Brazil. The concentrations of total protein, albumin, urea, creatinine, aspartate amino transferase, gamma-glutamyl transferase, alkaline phosphatase, lactate dehydrogenase, creatine kinase, cholesterol, triglycerides, calcium and phosphorus were determined using automated biochemical apparatus and commercial kits. Young animals showed triglyceride, creatinine, AST and GGT levels that were lower (P<0.05) than in adults. Females showed higher (P<0.05) total protein and triglyceride levels than in males and this may have been due to better quality of food and because males presented greater stress during blood sampling. The data presented contributes towards the knowledge of the biochemical profile of this species.

Key words: Biochemical profile, Brazil, Captivity, Collared peccary