Incidence of endogenous viral genes in two strains of white leghorn chickens selected for egg production and susceptibility or resistance to Marek's disease

1989 ◽  
Vol 77 (1) ◽  
pp. 26-32 ◽  
Author(s):  
U. Kuhnlein ◽  
J. S. Gavora ◽  
J. L. Spencer ◽  
D. E. Bernon ◽  
M. Sabour
Keyword(s):  
Egg Production ◽  
Marek's Disease ◽  
Marek’S Disease ◽  
White Leghorn ◽  
Viral Genes

scholarly journals Influence of Selection for Egg Production and Marek's Disease Resistance on the Incidence of Endogenous Viral Genes in White Leghorns

1989 ◽  
Vol 68 (9) ◽  
pp. 1161-1167 ◽  
Author(s):  
U. KUHNLEIN ◽  
M. SABOUR ◽  
J.S. GAVORA ◽  
R.W. FAIRFULL ◽  
D.E. BERNON
Keyword(s):  
Disease Resistance ◽  
Egg Production ◽  
Marek's Disease ◽  
Marek’S Disease ◽  
Viral Genes ◽  
White Leghorns ◽  
Selection For

Marek’s disease virus microRNA designated Mdv1-pre-miR-M4 targets both cellular and viral genes

2010 ◽  
Vol 155 (11) ◽  
pp. 1823-1837 ◽  
Author(s):  
Benoît Muylkens ◽  
Damien Coupeau ◽  
Ginette Dambrine ◽  
Sascha Trapp ◽  
Denis Rasschaert
Keyword(s):  
Disease Virus ◽  
Marek's Disease Virus ◽  
Marek's Disease ◽  
Marek’S Disease Virus ◽  
Marek’S Disease ◽  
Viral Genes

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

1992 ◽  
Vol 72 (2) ◽  
pp. 213-225 ◽  
Author(s):  
H. Ameli ◽  
J. S. Gavora ◽  
R. W. Fairfull ◽  
J. L. Spencer
Keyword(s):  
Egg Production ◽  
Genetic Correlations ◽  
Genetic Resistance ◽  
Total Mortality ◽  
Marek's Disease ◽  
Production Test ◽  
Production Traits ◽  
Marek’S Disease ◽  
Genetic Groups ◽  
Challenge Tests

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 <.05) higher (0.62, 1.00 and 0.96). Intraclass correlations, based on variation between and within the genetic groups were also higher with RB-1B. In the test with BC-1 there were deaths from an early mortality syndrome (EMS) prior to development of MD. Losses from EMS in Leghorns were highest in 2 genetic groups most resistant to MD. Based on genetic group means, correlations between MD incidence and egg production and egg weight were high and negative. In contrast the correlations between MD incidence, age at first egg, total blood spots, and egg specific gravity tended to be positive. No consistent relationships were found with adult body weight. Key words: Marek's disease, genetic resistance, heritability, genetic correlations, production traits, chickens

Comb Lesions and Mortality Patterns in White Leghorn Layers Affected by Marek's Disease

1983 ◽  
Vol 27 (2) ◽  
pp. 503 ◽  
Author(s):  
H. E. Ekperigin ◽  
A. M. Fadly ◽  
L. F. Lee ◽  
X. Liu ◽  
R. H. McCapes
Keyword(s):  
Marek's Disease ◽  
Marek’S Disease ◽  
White Leghorn

Influence of Marek's Disease Virus Strain AC-1 on Cellular Immunity in Birds Carrying Endogenous Viral Genes

1996 ◽  
Vol 40 (3) ◽  
pp. 645 ◽  
Author(s):  
M. Lessard ◽  
D. L. Hutchings ◽  
J. L. Spencer ◽  
H. S. Lillehoj ◽  
J. S. Gavora
Keyword(s):  
Disease Virus ◽  
Virus Strain ◽  
Cellular Immunity ◽  
Marek's Disease Virus ◽  
Marek's Disease ◽  
Marek’S Disease Virus ◽  
Marek’S Disease ◽  
Viral Genes
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