Genetic resistance to mortality of day-old chicks and carrier-state of hens after inoculation with Salmonella enteritidis
| Autor: | Catherine Beaumont, N Millet, J. Protais, P Colin, Jacques Guillot, Karine Proux, P. Pardon |
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| Rok vydání: | 2016 |
| Předmět: |
Serotype
0303 health sciences Salmonella Veterinary medicine General Immunology and Microbiology biology Aroa Inoculation Salmonella enteritidis Sire 0402 animal and dairy science Spleen 04 agricultural and veterinary sciences Heritability biology.organism_classification medicine.disease_cause 040201 dairy & animal science Virology 03 medical and health sciences medicine.anatomical_structure Food Animals medicine Animal Science and Zoology 030304 developmental biology |
| Zdroj: | Avian pathology : journal of the W.V.P.A. 28(2) |
| ISSN: | 0307-9457 |
| Popis: | The heritability of resistance of poultry to Salmonella enteritidis (SE) was investigated. Three measurements of resistance were made: survival after intramuscular inoculation of 419 day-old chicks, absence versus presence of Salmonella in spleens and caeca 4 weeks after oral inoculation of 304 hens at peak of laying, and antibody response of 228 hens following two inoculations of an aroA mutant of this serotype. In the first two models of infection, resistance appeared to be heritable. The heritability was estimated from the sire and dam components, respectively, at 0.14 ± 0.10 and 0.62 ± 0.16 for chick mortality, 0.47 ± 0.21 and 0.13 ± 0.26 for resistance to spleen contamination, and 0.24 ± 0.15 and 0.53 ± 0.26 for resistance to caecal contamination in laying hens. By contrast the estimated heritability of antibody response was very low (0.03 ± 0.08 and 0.10 ± 0.08 when estimated from the sire and dam components, respectively). These results suggest that a selection for increased resistance to SE may be efficient. |
| Databáze: | OpenAIRE |
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