[Seasonal cycle of strongylus in cattle on Réunion Island].
An experiment with tracer calves was conducted in Reunion island to determine the seasonal fluctuations of parasites in one of the most important rearing area, and to provide basis for a drenching programme. After being exposed to infestation for 28-31 days, two calves are slaughtered each month and their worms identified and counted. Four genera area prevalent : Trichostrongylus and Ostertagia rise in late winter--early summer; Cooperia and Oesophagostomum in early summer and again in late summer--early winter. Based on this seasonal incidence, three treatments in July, January and April or May are proposed--The effects of the cyclone Hyacinthe on the dynamic of infesting larvae are discussed.
D000818:Animals; D002417:Cattle / Q000469:parasitology*; D004064:Digestive System / Q000469:parasitology; D007195:Indian Ocean Islands; D012621:Seasons; D013320:Strongyloidea / Q000502:physiology
Cycle saisonnier des strongles chez les bovins de l'Ile de la Réunion.