title: Intestinal parasites in swine in the Nordic countries: prevalence and geographical distribution.
abstract: In Denmark (DK), Finland (FIN), Iceland (I), Norway (N), and Sweden (S), 516 swine herds were randomly selected in 1986-1988. Individual faecal analyses (mean: 27.9 per herd) from eight age categories of swine showed that Ascaris suum, Oesophagostomum spp., Isospora suis, and Eimeria spp. were common, while Trichuris suis and Strongyloides ransomi-like eggs occurred sporadically. Large fatteners and gilts were most frequently infected with A. suum with maximum prevalences of 25-35% in DK, N and S, 13% in I and 5% in FIN. With the exception of the remarkably low A. suum prevalence rates in FIN, no clear national differences were observed. Oesophagostomum spp. were most prevalent in adult pigs in the southern regions (21-43% in DK and southern S), less common in the northern regions (4-17% adult pigs infected), and not recorded in I. I. suis was common in piglets in DK, I, and S (20-32%), while < 1% and 5% were infected in N and FIN, respectively. Eimeria spp. had the highest prevalences in adult pigs (max. 9%) without clear geographical differences. I. suis and Eimeria spp. were recorded for the first time in I, and I. suis for the first time in N.
authors.affiliation: Danish Centre for Experimental Parasitology, Royal Veterinary and Agricultural University, Frederiksberg C, Copenhagen, Denmark. aro@kvl.dk
authors.forename: A
authors.initials: A
authors.lastname: Roepstorff
authors.forename: O
authors.initials: O
authors.lastname: Nilsson
authors.forename: A
authors.initials: A
authors.lastname: Oksanen
authors.forename: B
authors.initials: B
authors.lastname: Gjerde
authors.forename: S H
authors.initials: SH
authors.lastname: Richter
authors.forename: E
authors.initials: E
authors.lastname: Ortenberg
authors.forename: D
authors.initials: D
authors.lastname: Christensson
authors.forename: K B
authors.initials: KB
authors.lastname: Martinsson
authors.forename: P C
authors.initials: PC
authors.lastname: Bartlett
authors.forename: P
authors.initials: P
authors.lastname: Nansen
authors.forename: L
authors.initials: L
authors.lastname: Eriksen
authors.forename: O
authors.initials: O
authors.lastname: Helle
authors.forename: S
authors.initials: S
authors.lastname: Nikander
authors.forename: K
authors.initials: K
authors.lastname: Larsen
mesh_terms: D000367:Age Factors; D000818:Animals; D003718:Denmark / Q000453:epidemiology; D005260:Female; D005387:Finland / Q000453:epidemiology; D005843:Geography; D007055:Iceland / Q000453:epidemiology; D007411:Intestinal Diseases, Parasitic / Q000453:epidemiology / Q000662:veterinary*; D008297:Male; D009664:Norway / Q000453:epidemiology; D015995:Prevalence; D013548:Sweden / Q000453:epidemiology; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology*