Performance of lambs from a clean grazing system subsequently grazed on contaminated pasture.
D000821:Animal Feed; D000818:Animals; D001835:Body Weight; D005243:Feces / Q000469:parasitology; D009349:Nematode Infections / Q000276:immunology / Q000469:parasitology / Q000662:veterinary*; D010270:Parasite Egg Count; D006109:Poaceae / Q000469:parasitology*; D012756:Sheep; D012757:Sheep Diseases / Q000276:immunology*