Comparison of growth performance and immune parameters of three commercial chicken lines used in organic production

Veterinary Immunology and Immunopathology
Rikke Brødsgaard KjærupT S Dalgaard

Abstract

Owing to the higher demands for avoiding medication and antibiotics, health status of the production animals plays an important role in the poultry industry, especially in organic poultry systems. Immunity plays a major role in keeping the host free from disease, and it is evident that the host's genetic make-up influences immunity and disease resistance/susceptibility in chickens. Previously, breeding strategies aimed at selection for resistance against specific diseases with the risk of creating less disease resistance against other pathogens. Changing breeding strategies towards selection of chickens with a more general and broad disease resistance or robustness may therefore improve the overall health status, animal welfare, and food security in the poultry production. The aim of this study was therefore to compare the immunocompetence of the presumed "robust" Hellevad chickens with two chicken lines widely used in organic production, Bovans Brown (Bovans) and Hisex White (Hisex). The chickens were subjected to a routine vaccination program comprising one parasite and four viral vaccines. The current study indicates that considerable differences in immunocompetence may exist between commercial layer lines used in organic pr...Continue Reading

Citations

Jun 20, 2018·Avian Pathology : Journal of the W.V.P.A·Mohammed NaghizadehTina S Dalgaard
Jan 13, 2021·Animals : an Open Access Journal From MDPI·Tanja HofmannVolker Stefanski
Jun 28, 2019·Developmental and Comparative Immunology·Marina DobnerSilke Rautenschlein

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