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O presente trabalho foi desenvolvido na UFPR - Campus Palotina e em tres propriedades rurais do municipio de Palotina, Parana, durante o periodo de setembro de 1997 a agosto de 1999. O experimento foi delineado com o objetivo de estudar possiveis marcadores (parasitologicos e hematologicos) que refletem a habilidade do gado de leite (raca Holandesa Preto e Branco) em resistir a parasitose por larvas de Dermatobia hominis (Linnaeus Jr., 1781). Um total de 1050 larvas de D. hominis foram expulsas por meio de compressao digital. Os maiores valores de contagem total de leucocitos foram observados nos animais que apresentaram o menor numero de nodulos de larvas de D. hominis. Study of parasitological and hematological markers for the selection of dermatobiose resistant bovines Abstract The present research work has been carried out from September 1997 through August 1999 at Federal University of Parana Palotina Campus and in three farms from the same County. The main aim of this study was to analyze the possible parasitological and hematological markers that reflect Black and White Holstein dairy cattle resistance towards parasitism by Dermatobia hominis (Linnaeus Jr, 1781) larvae. From the group of 14 experimental animals a total of 1050 D. hominis were collected by manual compression during the period of time of the experiment. From the hematological data it was possible to conclude that there was an inverse relationship between the total leucocytes counting values and the number of larvae nodules, so that the highest the number of leucocytes per l of blood, the lowest the number of larvae nodules.

MARCADORES PARASITOLÓGICOS E HEMATOLÓGICOS PARA A SELEÇÃO DE BOVINOS RESISTENTES À DERMATOBIOSE