title: [Immunohistochemical determination of Chlamydia psittaci/pecorum and C.trachomatis in the piglet gut].
abstract: The jejunum, ileum, caecum and colon of 200 piglets were investigated immunohistochemically for the presence of Chlamydia psittaci and C. trachomatis using a vitelline IgY. Positive samples were later labelled using a commercial C. trachomatis polyclonal antiserum. Chlamydia were present in 33 (16.4%) of the animals, and 30 out of 33 were labelled by C. trachomatis polyclonal antiserum. Inclusions occurred predominantly (67%) in the large intestine. The serological results (CFT, ELISA) did not correlate well with immunohistochemical labelling in the gut. The incidence of Chlamydia rose from 6.9% in animals up to 4 weeks, to 41.8% in those over 4 weeks of age. A correlation between chlamydia and enteric disease was not obvious. Besides chlamydia, most of the diseased animals harboured other additional agents. In conclusion, intestinal chlamydiae in piglets, predominantly C. trachomatis, exist in Switzerland, although their pathogenic potential seems to be low.
authors.affiliation: Institut für Veterinärpathologie, Veterinärmedizinischen Fakultät, Universität Zürich, Schweiz.
authors.forename: I
authors.initials: I
authors.lastname: Zahn
authors.forename: L
authors.initials: L
authors.lastname: Szeredi
authors.forename: I
authors.initials: I
authors.lastname: Schiller
authors.forename: U
authors.initials: U
authors.lastname: Straumann Kunz
authors.forename: E
authors.initials: E
authors.lastname: Bürgi
authors.forename: F
authors.initials: F
authors.lastname: Guscetti
authors.forename: E
authors.initials: E
authors.lastname: Heinen
authors.forename: L
authors.initials: L
authors.lastname: Corboz
authors.forename: T
authors.initials: T
authors.lastname: Sydler
authors.forename: A
authors.initials: A
authors.lastname: Pospischil
mesh_terms: D000818:Animals; D000833:Animals, Suckling; D002690:Chlamydia Infections / Q000453:epidemiology / Q000382:microbiology / Q000662:veterinary*; D002692:Chlamydia trachomatis / Q000302:isolation & purification*; D002691:Chlamydophila psittaci / Q000302:isolation & purification*; D007150:Immunohistochemistry; D015994:Incidence; D007422:Intestines / Q000382:microbiology* / Q000473:pathology; D012189:Retrospective Studies; D013552:Swine; D013553:Swine Diseases / Q000453:epidemiology / Q000382:microbiology*; D013557:Switzerland / Q000453:epidemiology