title: Serological response in broiler chicks to different commercial Newcastle disease and infectious bronchitis vaccines.
abstract: Broiler chicks were administered vaccines against Newcastle disease and infectious bronchitis (both Arkansas and Massachusetts strains) at 2 weeks of age as either primary or secondary vaccinations. The vaccine was administered as a spray at 2 weeks of age to chicks that had received Newcastle disease vaccine alone, bronchitis vaccine alone, both vaccines in combination, or no vaccine at day 1 in the hatchery. The Newcastle disease hemagglutination-inhibition response was significantly lower in chicks receiving Newcastle disease vaccine as a secondary vaccine at 2 weeks than in those receiving the vaccine as a primary vaccination at that age. In contrast, the bronchitis hemagglutination-inhibition response was significantly higher in chicks receiving bronchitis vaccine as a secondary vaccination at 2 weeks than in those receiving the vaccine as a primary vaccination at that age.
authors.affiliation: College of Veterinary Medicine, University of Minnesota, St. Paul 55108.
authors.forename: D A
authors.initials: DA
authors.lastname: Halvorson
authors.forename: D
authors.initials: D
authors.lastname: Shaw
authors.forename: V
authors.initials: V
authors.lastname: Sivanandan
authors.forename: E K
authors.initials: EK
authors.lastname: Barbour
authors.forename: S
authors.initials: S
authors.lastname: Maheshkumar
authors.forename: J A
authors.initials: JA
authors.lastname: Newman
authors.forename: L
authors.initials: L
authors.lastname: Newman
mesh_terms: D000280:Administration, Inhalation; D000336:Aerosols; D000818:Animals; D000914:Antibodies, Viral / Q000096:biosynthesis* / Q000097:blood; D002645:Chickens / Q000276:immunology*; D004338:Drug Combinations; D006385:Hemagglutination Inhibition Tests; D007112:Immunity, Maternally-Acquired; D007117:Immunization, Secondary / Q000662:veterinary; D001351:Infectious bronchitis virus / Q000276:immunology*; D009522:Newcastle disease virus / Q000276:immunology*; D014132:Trachea / Q000473:pathology; D014611:Vaccination / Q000662:veterinary; D014765:Viral Vaccines / Q000008:administration & dosage / Q000009:adverse effects / Q000276:immunology*
chemical_list: D000336:Aerosols; D000914:Antibodies, Viral; D004338:Drug Combinations; D014765:Viral Vaccines