|Kulkarni, Gururaj - Raj|
Submitted to: Poultry Science Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 7/6/2003
Publication Date: 7/6/2003
Citation: KULKARNI, G., FADLY, A. SEROLOGICAL EVIDENCE OF CHICKEN ANEMIA VIRUS INFECTION IN SPECIFIC PATHOGEN-FREE CHICKENS. POULTRY SCIENCE MEETING. 2003. V. 82 (SUPPLEMENT 1). ABSTRACT P. 42.
Technical Abstract: Specific-Pathogen-Free (SPF) flocks are maintained at the Avian Disease and Oncology Laboratory (ADOL). Strict bio-security measures and cleaning protocols are effective in maintaining flocks free of twelve common avian pathogens. During a four year survey (1999 - 2002), ADOL SPF flocks were tested for antibodies to Chicken Anemia Virus (CAV) using Enzyme-linked immunosorbent assay. At 18 weeks of age, CAV antibodies were detected in 37% to 56% in Class I breeders maintained in plastic canopy isolators with filtered air positive pressure (FAPP) from the day of hatch until termination and in 45% to 70% in Class II breeders reared in colony cages in a FAPP brooder house, vaccinated with turkey herpes virus at hatch and transferred at 18-22 weeks of age to individual cages in an environmentally controlled house until termination. At 36 weeks of age, the incidence of CAV antibodies varied from 43% to 78%. By 55-60 weeks of age (termination) the incidence of CAV antibodies varied from 79% to 100% and 52% to 89% in Class I and Class II breeders respectively. The data provide evidence for CAV infection in ADOL SPF chickens, regardless of housing environment and strict bio-security measures.