Seasonal distribution of gastrointestinal nematode infections in sheep in a semiarid region, northeastern Brazil Distribuição sazonal de infecção por nematóides gastrintestinais em ovinos em área semiárida, Nordeste do Brasil
作者： Albeísa Cleyse Batista Farias , André Luís Santos de Pinho , Maria de Fátima de Souza , Manoel Pimentel-Neto , Rízia Maria da Silva
DOI:
关键词: Ovis 、 Veterinary medicine 、 Oesophagostomum 、 Haemonchus contortus 、 Parasite load 、 Biology 、 Herd 、 Trichuris 、 Trichostrongylus 、 Parasite hosting
摘要: The objective of this study was to determine the seasonal distribution and gastrointestinal nematode parasite load in crossbred Santa Ines tracer lambs, correlate rainfall during period with occurrences parasitic infections. Sixty-four male lambs between ages four eight months were used study. Two inserted into herd every 28 days pattern infective larvae available environment. Variation fecal egg count (FEC) nematodes observed at site, many samples containing undetectable loads dry season. identified coprocultures Haemonchus sp., Trichostrongylus Cooperia Strongyloides sp. Oesophagostomum recovered necropsy contortus, colubriformis, punctata, C. pectinata, Trichuris Skrajabinema ovis. total number immature adult forms from tracers showed distributions that significantly correlated amount received month (p value ≅ 0.000 all cases). species H. contortus predominant should be
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