title: Comparative gastrointestinal nematode parasitism in naturally infected ewe and ram lambs.
mesh_terms: D000818:Animals; D005260:Female; D008297:Male; D009349:Nematode Infections / Q000662:veterinary*; D009814:Oesophagostomiasis / Q000662:veterinary; D012737:Sex Factors; D012756:Sheep; D012757:Sheep Diseases; D014252:Trichostrongyloidiasis / Q000662:veterinary; D014257:Trichuriasis / Q000662:veterinary