Estudo soroepidemiológico de Brucella abortus, Toxoplasma gondii e vírus da artrite encefalite caprina em rebanhos caprinos nas unidades produtoras dos estados do Pará e Maranhão

Abstract

This study aimed at searching for the occurrence and frequency levels of the antibodies anti- Brucella abortus, Toxoplasma gondii and the Caprine Arthritis Encephalitis Virus (CAEV) in caprine from 14 distinct production units within the states of Pará and Maranhão. In the state of Pará, animals from the municipalities of Benevides, Castanhal, Santa Izabel do Pará and Moju have been analyzed, whereas in the state of Maranhão the study covered the municipality of Chapadinha. The serological tests accomplished with the purpose of diagnosing brucellosis disease were, the Buffered Acidified Plate Antigen test (BAPA), employed as triage test, and the 2-Mercaptoetanol (2-Me), as confirmatory test. For the toxoplasmosis analysis the Indirect Immunofluorescence Reaction (IIFR) and for CAEV the Agarose Gel Immunodiffusion (AGID) have been used respectively. The result of the brucellosis analysis has shown negativity in 100,0% of the studied samples. For toxoplasmosis and CAEV the respective incidences were 23,5% (97/412) and 21,6% (85/393). Statistical differences were observed in the relationship between anti-Toxoplasma gondii antibodies and the age of the caprines, showing that animals over 24-month old have undergone more risks of being infected when compared to animals at early ages OR=2,15 (IC95% 1,19 – 3,88). On the other hand, the risk factors found for CAEV were: lack of knowledge about the disease OR=6,45 (IC95% 2,88-14,47); the use of non - disposable materials, OR=10,85 (IC95% 4,85-24,28); the free-range farming system OR=10,85 (IC95% 4,85-24,28), the semi-extensive farming system OR=3,71 (IC95% 1,64-8,35) and handling procedures OR=11,4 (IC95% 5,51-23,60). It has been concluded that the caprine production units from Pará and Maranhão showed positive results for the studied diseases in their livestock.