| Journal: | Arquivo brasileiro de medicina veterinaria e zootecnia |
| Database: | PERIÓDICA |
| System number: | 000287363 |
| ISSN: | 0102-0935 |
| Authors: | Mores, N1 Amaral, A.L Ventura, L Silva, R.A.M Silva, V.S Barioni-Junior, W |
| Institutions: | 1Empresa Brasileira de Pesquisa Agropecuaria, Suinos e Aves, Concordia, Santa Catarina. Brasil |
| Year: | 2006 |
| Season: | Oct |
| Volumen: | 58 |
| Number: | 5 |
| Pages: | 708-717 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | The efficiency of the tuberculin delayed-type skin hypersensitivity test was evaluated in swine. A comparison of the tuberculin skin tests was performed with avian and bovine protein derivatives (PPD), in the detection of Mycobacterium avium-Complex or M. bovis infected swine. The methods were evaluated as to define criteria for readings and results interpretation, to determine their capacity in detecting Mycobacterium avium complex (MAC) infected swine and their performance in differentiating MAC from M. bovis-infected individuals. Three trials were performed with naturally MAC-infected swine, experimentally MAC-infected or experimentally M. bovis-infected animals. The skin test readings positive or negative were, respectively, correlated to the presence or absence of gross lesions and histological alterations in lymph nodes at slaughter age. Reaction with both antigens were observed in MAC and M. bovis-inoculated animals as well. Reactions wider then 0.5cm in diameter or showing skin thickness increasing more then 0.2cm in the time frame between inoculation and reading were considered to be positive, as compared to the average results of the group. Herds with MAC-infected swine could be detected with either avian or bovine PPD. Both diameter and skin thickness were efficient in detecting MAC-infected swine, however, reading the diameter of the reaction was shown to be more easily and economically performed |
| Portuguese abstract | Avaliou-se a eficiência do teste de tuberculina intradérmico comparado, para identificar rebanhos suínos infectados com o complexo Mycobacterium avium (MAC), seu poder de discriminação entre rebanhos infectados com MAC e Mycobacterium bovis, e para estudar diferentes critérios de leitura e interpretação. Foram realizados três experimentos com rebanhos infectados naturalmente com MAC, com suínos inoculados com MAC e com suínos inoculados com M. bovis. Os testes foram comparados com a presença ou não de lesões macro e/ou microscópicas nos linfonodos de suínos em idade de abate. Verificaram-se reações cruzadas entre os testes intradérmicos, tanto com animais infectados com o MAC como com M. bovis. Reações acima de 0,5cm de diâmetro ou acima de 0,20cm no aumento da espessura da dobra da pele, entre a aplicação e a leitura, foram consideradas positivas no cálculo da média para rebanhos. Rebanhos infectados com MAC podem ser identificados por meio do teste intradérmico com PPD aviário e bovino. Tanto a medida do diâmetro quanto o aumento da espessura da dobra da pele das reações foram eficientes no diagnóstico da infecção por MAC. Recomenda-se a utilização do método da medição do diâmetro |
| Disciplines: | Medicina veterinaria y zootecnia |
| Keyword: | Medicina veterinaria, Porcinos, Parasitología, Diagnóstico, Infecciones, Tuberculina, Mycobacterium avium, Mycobacterium bovis |
| Keyword: | Veterinary medicine and animal husbandry, Swine, Veterinary medicine, Parasitology, Diagnosis, Infections, Mycobacterium avium, Mycobacterium bovis, Tuberculin |
| Full text: | Texto completo (Ver HTML) |
