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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/14751

Title: High sero-prevalence of caseous lymphadenitis identified in slaughterhouse samples as a consequence of deficiencies in sheep farm management in the state of Minas Gerais, Brazil
Other Titles: BMC Veterinary Research
Authors: Portela, Ricardo Wagner Dias
Nascimento, Roberto José Meyer
Guimarães, Alessandro S.
Carmo, Filipe B.
Heinemann, Marcos B.
Lage, Andrey Pereira
Seyffert, Núbia
Miyoshi, Anderson
Azevedo, Vasco Ariston de Carvalho
Gouveia, Aurora M. G.
Keywords: Caseous lymphadenitis;Corynebacterium pseudotuberculosis;sheep;Slaughterhouse;Minas Gerais
Issue Date: 2011
Abstract: Background Caseous lymphadenitis (CLA), caused by Corynebacterium pseudotuberculosis, is one of the most important diseases of sheep and goats, causing considerable economic losses for herd owners. Results We assessed the seroprevalence of infection with C. pseudotuberculosis in 805 sheep from 23 sheep farms that supply slaughterhouses in the state of Minas Gerais; we also analyzed management practices that could be associated with CLA occurrence, used on these and nearby farms that also supplied animals to the slaughterhouse (n = 60). The serum samples for assaying CLA infection were taken at the slaughterhouse. Frequency of infection with C. pseudotuberculosis was estimated at 43.7%, and farm frequency was estimated at 100%. Management practices were analyzed through a questionnaire. All farmers (60/60) had extensive/semi-extensive rearing system; 70.0% (42/60) identified sheep individually; 11.7% (7/60) had periodical technical assistance; 41.7% (25/60) disinfected the facilities; 86.7% (52/60) used barbed wire fences and did not implement adequate CLA control measures; only 11.7% (7/60) of breeders reported vaccination against C. pseudotuberculosis; 13.3% (8/60) took note of animals with clinical signs of CLA; 1.7% (1/60) opened and sanitized abscesses, and isolated the infected animals; 10.0% (6/60) knew the zoonotic potential of this disease and 1.7% (1/60) of the farmers culled animals in case of recurrence of abscesses. Conclusions It can be concluded that C. pseudotuberculosis infection is widely spread in sheep flocks in Minas Gerais state in Brazil and that there is a lack of good management measures and vaccination, allowing transmission of this infectious agent throughout the production network.
Description: p. 1-5
URI: http://repositorio.ufba.br/ri/handle/ri/14751
ISSN: 1746-6148
Appears in Collections:Artigos Publicados em Periódicos (ICS)

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