title: Prevalence and intensity of gastrointestinal nematodes in slaughter lambs from central Alberta.
abstract: Two trichostronglyes, Teladorsagia ostertagi and Nematodiru helvetianus, accounted for > 99% of nematodes recovered from gastrointestinal tracts of 47 lambs pastured in central Alberta during the summer of 2000. Their prevalence and mean intensity increased from < 10% and < 50 worms/host, in late June, to > 80% and approximately 1000 worms/host, by mid-July, respectively.
authors.affiliation: Agriculture and Agri-Food Canada, Lethbridge Research Centre, 5403 1st Ave. S. Lethbridge, Alberta T1J 4B1.
authors.forename: Douglas D
authors.initials: DD
authors.lastname: Colwell
authors.forename: Cameron P
authors.initials: CP
authors.lastname: Goater
authors.forename: Kristi M
authors.initials: KM
authors.lastname: Jacobson
mesh_terms: D000416:Alberta / Q000453:epidemiology; D000818:Animals; D005243:Feces / Q000469:parasitology; D010270:Parasite Egg Count / Q000662:veterinary; D015995:Prevalence; D012621:Seasons; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology* / Q000469:parasitology; D014253:Trichostrongylosis / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D014254:Trichostrongylus / Q000254:growth & development / Q000302:isolation & purification