title: Parasite resistance in straightbred and crossbred Barbados Blackbelly sheep.
mesh_terms: D000818:Animals; D001947:Breeding; D006454:Hemoglobins / Q000235:genetics; D006824:Hybridization, Genetic; D007113:Immunity, Innate; D007411:Intestinal Diseases, Parasitic / Q000276:immunology / Q000469:parasitology / Q000662:veterinary*; D010270:Parasite Egg Count; D012756:Sheep / Q000235:genetics / Q000276:immunology*; D012757:Sheep Diseases / Q000276:immunology*
chemical_list: D006454:Hemoglobins