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	Provedor de dados Ciência Rural (1) Autor Franti,Charles (1) Riemann,Hans (1) Rojas,José Alfonso Barajas- (1) Palavra-chave Cattie diseases (1) ELISA (1) Serological screening (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 1993 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última SEROLOGICAL SCREENING FOR INFECTIOUS CATTLE DISEASES: II. ASSOCIATION BETWEEN PREVALENCE AND LEVEL OF ELISA RESPONSE Ciência Rural Rojas,José Alfonso Barajas-; Riemann,Hans; Franti,Charles. A herd of cattle (Holstein-Zebu crosses) was screened every two months by ELISA during a period of two years for IgG antibodies against 19 infectious disease agents. Two hundred and ninety five sera were collected from 157 young animals (0-4 months of age), 1037 sera from 292 developing animals (4-36 months of age) and 1468 sera from 259 producing animals (> 36 months of age). The results indicate that the difference in ELISA between positive and negative tests is associated with the overall prevalence of positive tests. When the prevalence of positive tests is low the difference between positive and negative tests is greater than when the prevalence is intermediate or high. This means that ELISA, presumably other serological tests for IgG antibodies,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Serological screening; Cattie diseases; ELISA. Ano: 1993 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781993000200014 Registros recuperados: 1 Primeira ... 1 ... Última

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