study of gastro-intestinal strongylosis in a sheep flock on permanent pasture 2. sheep parasitism in 1978-1979.the epidemiological study carried out in 1977 in the limousin region of france was continued for the next two years. eighty-five lambs were slaughtered at the rate of five animals every weeks: sixty were slaughtered from may 1978 to march 1979 and twenty-five from may to september 1979. total parasite counts and coprological examinations were carried out. in spring the infestation of the lambs was early and heavy, and revealed that certain free-living stages can survive in low temperatures. the ...19854014986
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