Use este identificador para citar ou linkar para este item: http://repositorio.bc.ufg.br/handle/ri/70
Tipo do documento: Artigo publicado em periódico científico
Título: Aspectos epidemiológicos da dermatite digital bovina em duas propriedades produtoras de leite do estado de Goiás, Brasil
Título(s) alternativo(s): Epidemiologic aspects of cattle digital dermatitis in two dairy farms in the state of Goias state, Brazil
Autor: Silva, Luiz Antônio Franco da
Jayme, Valéria de Sá
Abstract: Estudos demonstram que as lesões causadas pela dermatite digital bovina apresentam expressiva quantidade de eosinófilos, mas seus aspectos ainda são motivos de especulação. O presente estudo teve como objetivo quantificar a eosinofilia tecidual presente em lesões de dermatite digital, nas diferentes fases da doença. Foram utilizadas quarenta fêmeas bovinas distribuídas em quatro grupos compostos de dez animais, sendo que o grupo GI constituiu-se de animais saudáveis, GII de animais na fase inicial da doença, GIII de bovinos com lesões erosivas e o grupo GIV formado por animais portadores de lesões na forma papilomatosa. O exame histopatológico revelou infiltrado inflamatório eosinofílico nas diferentes lesões digitais examinadas, principalmente na derme papilar, apresentando distribuição que variou de difusa a focal e/ou multifocal. O aumento na intensidade deste infiltrado foi proporcional ao grau da lesão. _______________________________________________________________________________________________________________________ ABSTRACT _______________________________________________________________________________________________________________________ From November of 2000 until October 2003 some epidemiologic aspects related to digital dermatitis were evaluated in 7,752 cattle, from two farms in the cities of Jataí and Orizona, Goiás state, in both the wet and dry 1136 LEÃO, M. A. et al. Ciência Animal Brasileira, v. 10, n. 4, p. 1135-1147, out./dez. 2009 seasons of the year. Management, age, sex and reproductive status were considered as intrinsic variables of the farm. On the other hand, the introduction of animals without podal examination, cattle transiting on foot or in trucks, access of strangers to the farm, the presence of digital dermatitis bearers in the surrounding properties, and daily visiting of milk transport trucks were considered extrinsic factors to the property. The chi-square test (χ2), at 5% of significance, was used to compare the frequency of the condition between age ranges. The comparison between wet and dry seasons of the year associated to intensive and extensive managements was done by diagnosing the condition in the periods and considering the management, and then calculating the association coefficient (j) to quantify the intensity of the variables considered. The odds ratio (OR) was calculated for the two variables: season of the year and management system. The Spearman coefficient was used to correlate the many associated factors for the disease. Digital dermatitis was diagnosed on 161 (3.85%) animals from farm A (Jataí), and in 95 (2.66%) animals from farm B (Orizona). There was a difference (p<0.01) on the occurring of the condition among the ages considered, with lower association in farm A (p<0.001) (j=0.13) and moderate association (j=0.41) in farm B. No matter the age ranges, the greater occurrence was diagnosed in the dry season, when the animals were confined. This points to a relative influence from the season in the development of the condition, mainly in farm B, where there was an association (j=0.07). Rainfall and the introduction of new animals in the farm did not correlate positively with the disease. Intensive management presented a greater number of cases compared to extensive management, and the greatest occurrence happened in the three-to-six-year-old group. Recently calved cows presented a greater amount of lesions, and most of cases inspite of age happened on the dry season of the year.
Citação: SILVA, Luiz Antônio Franco da; JAYME, Valéria de Sá. Aspectos epidemiológicos da dermatite digital bovina em duas propriedades produtoras de leite do estado de Goiás, Brasil. Ciência Animal Brasileira, Goiânia, v. 10, n. 4, out./dez. 2009. Disponível em: <https://www.revistas.ufg.br/index.php?journal=vet&page=article&op=view&path%5B%5D=8470&path%5B%5D=5929>.
Tipo de acesso: Open Access
URI: http://repositorio.bc.ufg.br/handle/ri/70
Data de publicação: 28-Nov-2008
Aparece nas coleções:EVZ - Artigos publicados em periódicos

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