title: [Serologic monitoring of pullet and laying hen flocks in Switzerland: results from the years 1990 and 1991].
abstract: In 1990 and 1991 4522 blood samples from 398 pullet flocks and 1338 blood samples from 128 laying flocks were monitored for antibody against infectious bronchitis virus, infectious laryngotracheitis virus, adenovirus, reovirus, infectious bursal disease virus, Newcastle disease virus, Mycoplasma gallisepticum and Mycoplasma synoviae. The results are discussed for pullets and laying hens.
authors.affiliation: Institut für Veterinärbakteriologie, Universität Zürich.
authors.forename: B
authors.initials: B
authors.lastname: Keller-Berger
authors.forename: R K
authors.initials: RK
authors.lastname: Hoop
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D000914:Antibodies, Viral / Q000097:blood*; D002645:Chickens; D005260:Female; D009175:Mycoplasma Infections / Q000453:epidemiology / Q000662:veterinary*; D011201:Poultry Diseases / Q000453:epidemiology*; D013557:Switzerland / Q000453:epidemiology; D014611:Vaccination / Q000662:veterinary; D014777:Virus Diseases / Q000453:epidemiology / Q000662:veterinary*
chemical_list: D000907:Antibodies, Bacterial; D000914:Antibodies, Viral
vernacular_title: Serologische Uberwachung von Junghennen-und Legehennenherden in der Schweiz: Resultate der Jahre 1990 und 1991.