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Year : 2005
Tome : 156
Volume : 2
Pages : 85-86
Title : Prevalence and dynamics of natural infection with Fasciola hepatica (Linnaeus, 1758) in brazilian cattles
Authors : R.N. FARIA, M.C. CURY and W.S. LIMA
Summary : It has been determined the fluctuation of the prevalence of natural fasciolosis in dairy cattle herd formed by 44 cows (crossbred Holstein x zebu) and their calves, which were observed during 12 months in the municipality of Itajubá, Minas Gerais, Brazil. The cows eliminated F. hepatica eggs throughout the year, particularly during the dry season from March to October. Most of the calves began to eliminate eggs at four month old, suggesting that infection had occurred when they started grazing two months before. During the studied period, 1058 faecal samples from several different farms in the Itajubá area were examined and 10.59% were found to be positive for the eggs of the parasite. Based on these results, Itajubá was shown to be an enzootic area for F. hepatica, probably due to its propitious climate, the type of animal husbandry carried out, type of pasture, and presence of the snail vector Lymnaea columella.
Keywords : Fasciola hepatica - dairy cattle - prevalence - dynamics of infection - flutuation.
Correspondence : M.C. CURY
Adress : Laboratório de Parasitologia - Instituto de Ciências Biomédicas/UFU Av. Pará 1720 - CEP 38400902 - Bairro Umuarama - Uberlândia - Minas Gerais Brazil - e-mail : cury@umuarama.ufu.br
Link : pdf

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