Inhibition of development: variation within a population of Ostertagia ostertagi.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases; D014644:Genetic Variation; D007814:Larva / Q000254:growth & development; D010270:Parasite Egg Count; D012621:Seasons; D014251:Trichostrongyloidea / Q000254:growth & development*; D014252:Trichostrongyloidiasis / Q000662:veterinary*