Arrested development of Ostertagia ostertagi and Cooperia oncophora: effect of the time of year on the conditioning and deconditioning of infective larvae.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000469:parasitology*; D007814:Larva / Q000254:growth & development; D010029:Ostertagiasis / Q000469:parasitology; D012621:Seasons; D014251:Trichostrongyloidea / Q000254:growth & development*; D014252:Trichostrongyloidiasis / Q000469:parasitology / Q000662:veterinary*