Submitted to: American Veterinary Medical Association Abstract
Publication Type: Abstract Only
Publication Acceptance Date: December 16, 2013
Publication Date: July 26, 2014
Citation: Fadly, A.M., Mays, J.K., Zhang, H., Hunt, H.D. 2014. Role of endogenous avian leukosis virus and serotype 2 Marek’s disease virus in enhancement of spontaneous lymphoid-leukosis-like tumors in chickens. American Veterinary Medical Association Annual Convention, July 25-29, 2014, Denver, Colorado. Abstract No. 16756. Technical Abstract: The influence of endogenous subgroup E avian Leukosis virus (ALV-E) and strain SB-1 of serotype 2 Marek’s disease virus (MDV) on the enhancement of spontaneous lymphoid leukosis (LL)-like tumors was studied in chickens of Avian Disease and Oncology Laboratory (ADOL) line named 0.TVB*S1, or RFS. This line of chickens lacks all endogenous virus genes and is susceptible to infection with all subgroups of ALV including subgroup E (ALV-E). The results suggest that the incidence of spontaneous LL-like tumors in chickens that harbor endogenous ALV was higher than in chickens that lack ALV-E following vaccination with serotype 2 MDV at hatch. The data suggest that both ALV-E and serotype 2 MDV play an important role in the enhancement of spontaneous LL-like tumors in certain lines of chickens.