PCR of “Salmonella” spp, “Streptococcus suis”, “Brucella abortus” e Porcine circovirus type 2 in free-living and captive peccaries

Abstract

The tayassuideos are wild animals in the same taxonomic order of pigs (Artiodactyla) and, although belonging to different families, have more in common diseases, which are characterized by the same clinical signs, diagnosis and treatment. From the three species, two occur naturally in Brazil: Tayassu tajacu and Tayassu peccary, also known as collered peccary and white lipped peccary, respectively. The importance of the study of microorganisms found in these populations is because these animals can act as reservoirs of diseases to domestic animal, potential zoonotic risk and a problem to specie conservation. In this study, it was examined the occurrence of pathogenic microorganisms for pigs in tayassuideos from captivity and living free. The presence of Salmonella spp., Streptococcus suis, Brucella abortus and Porcine circovirus type 2 was investigated by the Polymerase Chain Reaction. From the 31 animals of captivity, 25.8% (8/31) were positive for Salmonella spp., 22.58% (7/31) for Brucella abortus and 3.22% (1/31) for Streptococcus suis. From the 15 swab samples from the tonsil of free-living peccaries, 13.33% (2/ 15) were positive for Brucella abortus and negative for Streptococcus suis and Salmonella spp. All animals were negative for Porcine circovirus type 2. Occurrence of microorganisms was significantly (p = 0,0011) higher in animals in captivity than in free-living, demonstrating the needing for inclusiveness in research aimed at the character of the majority of zoonotic agents that were searched and proximity of these animals to humans.