Detalhes bibliográficos
| Ano de defesa: |
2016 |
| Autor(a) principal: |
Barbosa, Ernani Flávio Lopes
 |
| Orientador(a): |
Rezende, Cíntia Silva Minafra e
|
| Banca de defesa: |
Portela, Ricardo Wagner Dias,
Oliveira, Cairo Henrique Sousa de |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de Goiás
|
| Programa de Pós-Graduação: |
Programa de Pós-graduação em Ciência Animal (EVZ)
|
| Departamento: |
Escola de Veterinária e Zootecnia - EVZ (RG)
|
| País: |
Brasil
|
| Palavras-chave em Português: |
|
| Palavras-chave em Inglês: |
|
| Área do conhecimento CNPq: |
|
| Link de acesso: |
http://repositorio.bc.ufg.br/tede/handle/tede/6007
|
Resumo: |
Corynebacterium pseudotuberculosis is the etiologic agent of Caseous Lymphadenitis (CLA), a chronic infectious disease that is distributed worldwide and affects goats and sheep. The disease is characterized by the development of granulomes in superficial lymph nodes and some organs, as liver, spleen, lungs, and kidneys. The occurrence of CLA in Brazilian small ruminant herds is widely spread, causing economic losses due to a reduction in productive efficiency and in leather economic value, and occasional death of affected animals. The objective of this study was to identify the seroprevalence of specific anti-C. pseudotuberculosis antibodies in goats and sheep in the state of Goiás, and to correlate the infection with breeding procedures. For this, 1815 serum samples from goats at 213 production units and 751 sera samples from sheep at 113 rural properties were analyzed. The state of Goiás was divided in regional agencies, as proposed by the state government. These samples were submitted to an indirect ELISA technique for specific antibodies detection, and a questionnaire was applied to farmers in order to correlate the presence of specific antibodies with the breeding procedures adopted by these breeders. The data were analyzed using the R software. The results showed a CLA seroprevalence of 29.4% for sheep and 51.8% for goats. From the properties included in the study, 84 and 88.2% presented positive goats or sheep, respectively. Positive animals were present in 100% of the state regional agencies. 90% of the Goiás studied municipalities presented positive sheep, and CLA positive goats were present in 84.7% of the municipalities included in this survey. From the studied goats, 54.2% of the females showed positive results, and 44.7% of the males had the presence of C. pseudotuberculosis-specific antibodies. From the animalsat more than 36 months of age, the results showed prevalence of 62.5% and 62.8% of positive sheep and goats, respectively. When considering the type of workers at the production units, sheep farms where the owners employed the breeders presented 31.3% prevalence. However, when the owner’s family was the main breeders, the sheep presented 21.7% prevalence. 53.1% of the goats that were acquired from other farms presented positive results. For sheep herds, there was no significant correlation with breeding procedures. On the other hand, 54.4% of the goats that had signalgrass as the main forage were positive at the ELISA. Considering these results, it can be concluded that this study represents the first CLA epidemiological survey in goats and sheep from Goiás state, and the occurrence of the infection with the bacteria is widespread at the state. |
