Strategy for eradication of outbreaks of Aujeszky's Disease in pigs in the São Paulo state

Pesquisa Veterinária Brasileira

Oliveira, Luís Guilherme de¹  Oliveira, Maria E.F.²  Alexandrino, Bruna²  Samara, Samir I.² 

[1] Universidade Estadual Paulista, Jaboticabal, Brasil

DOI  :  10.1590/S0100-736X2012001100008

来源: Colegio Brasileiro de Patologia Animal-CBPA

【 摘 要 】

This study aimed to evaluate strategies for eradicationof Aujeszky Disease (AD) virus infection after outbreaks in swine productionsystems in Sao Paulo state. Two outbreaks were identified in Cerqueira Césarcounty. The first outbreak coursed with seropositive pigs (outbreak 1), andthe other with pigs presenting clinical signs (outbreak 2). In order to eradicatethe infection, two sanitary strategies were tested: (1) eradication of animalswith positive serology and (2) by gradual depopulation, with a follow up of12 months. The serology eradication was used in outbreak 1, and included theidentification, isolation and slaughter of positive animals; followed by vaccinationof negative animals and replacement with pigs from farms free of the disease.At the beginning, 68% of pigs were positive, and at the end it declined to 51%.In outbreak 2, gradual depopulation was used, and all animals were sent to sanitaryslaughter, until facilities were completely empty. Afterwards, animals freeof the disease were used for repopulation. It was seen that the last strategywas more effective because eradicated the infection.

【 授权许可】

CC BY-NC