Genetic resistance to two Marek's disease viruses and its relationship to production traits in chickens

Autor:	R. W. Fairfull, J. S. Gavora, H. Ameli, J. L. Spencer
Rok vydání:	1992
Předmět:	Veterinary medicine Marek's disease biology Genetic resistance Incidence (epidemiology) Outbreak Virulence Heritability biology.organism_classification Virology Virus Food Animals Animal Science and Zoology Genetic variability
Zdroj:	Canadian Journal of Animal Science. 72:213-225
ISSN:	1918-1825 0008-3984
Popis:	Genetic variability of resistance to Marek's Disease (MD), and relationships between MD incidence and egg production traits were studied in 23 genetic groups of experimental and commercial meat and egg chickens. In the challenge tests, chickens were injected with either moderately virulent BC-1 MD virus (BC-1) or highly virulent RB-1B MD virus (RB-1B). In the 497-d egg-production test, sisters of challenged birds were vaccinated for MD on the day of hatch and there were no outbreaks of MD. Heritabilities for MD incidence, MD mortality, and total mortality in the challenge tests, based on data from three unselected control strains of Leghorns were generally low (0.06, 0.13 and 0.20) with BC-1. With RB-1B, the heritability estimates were significantly (P
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::03198ae63e1e7391df8b92b9427ee852 https://doi.org/10.4141/cjas92-028 Zobrazit plný text záznamu