Density dependence of the weight of Haemonchus contortus adults.
D000818:Animals; D008297:Male; D011110:Polymorphism, Genetic; D012756:Sheep; D012757:Sheep Diseases; D014251:Trichostrongyloidea / Q000254:growth & development; D014252:Trichostrongyloidiasis / Q000662:veterinary*