MHC haplotype and susceptibility to experimental infections (Salmonella Enteritidis, Pasteurella multocida orAscaridia galli) in a commercial and an indigenous chicken breed

TY - JOUR

T1 - MHC haplotype and susceptibility to experimental infections (Salmonella Enteritidis, Pasteurella multocida orAscaridia galli) in a commercial and an indigenous chicken breed

AU - Schou, T W

AU - Labouriau, R

AU - Permin, A

AU - Christensen, J P

AU - Sørensen, P

AU - Cu, H P

AU - Nguyen, V K

AU - Juul-Madsen, H R

PY - 2010

Y1 - 2010

N2 - In three independent experimental infection studies, the susceptibility and course of infection of three pathogens considered of importance in most poultry production systems, Ascaridia galli, Salmonella Enteritidis and Pasteurella multocida was compared in two chicken breeds, the indigenous Vietnamese Ri and the commercial Luong Phuong. Furthermore, the association of the Major Histocompatibility Complex (MHC) with disease-related parameters was evaluated, using alleles of the LEI0258 microsatellite as markers for MHC haplotypes.The Ri chickens were found to be more resistant to A. galli and S. Enteritidis than commercial Luong Phuong chickens. In contrast, the Ri chickens were more susceptible to P. multocida, although production parameters were more affected in the Luong Phuong chickens. Furthermore, it was shown that the individual variations observed in response to the infections were influenced by the MHC. Using marker alleles of the microsatellite LEI0258, which is located within the MHC region, several MHC haplotypes were identified as being associated with infection intensity of A. galli. An association of the MHC with the specific antibody response to S. Enteritidis was also found where four MHC haplotypes were shown to be associated with high specific antibody response. Finally, one MHC haplotype was identified as being associated with pathological lesions and mortality in the P. multocida experiment. Although not statistically significant, our analysis suggested that this haplotype might be associated with resistance. These results demonstrate the presence of local genetic resources in Vietnamese chickens, which could be utilized in breeding programmes aiming at improving disease resistance

AB - In three independent experimental infection studies, the susceptibility and course of infection of three pathogens considered of importance in most poultry production systems, Ascaridia galli, Salmonella Enteritidis and Pasteurella multocida was compared in two chicken breeds, the indigenous Vietnamese Ri and the commercial Luong Phuong. Furthermore, the association of the Major Histocompatibility Complex (MHC) with disease-related parameters was evaluated, using alleles of the LEI0258 microsatellite as markers for MHC haplotypes.The Ri chickens were found to be more resistant to A. galli and S. Enteritidis than commercial Luong Phuong chickens. In contrast, the Ri chickens were more susceptible to P. multocida, although production parameters were more affected in the Luong Phuong chickens. Furthermore, it was shown that the individual variations observed in response to the infections were influenced by the MHC. Using marker alleles of the microsatellite LEI0258, which is located within the MHC region, several MHC haplotypes were identified as being associated with infection intensity of A. galli. An association of the MHC with the specific antibody response to S. Enteritidis was also found where four MHC haplotypes were shown to be associated with high specific antibody response. Finally, one MHC haplotype was identified as being associated with pathological lesions and mortality in the P. multocida experiment. Although not statistically significant, our analysis suggested that this haplotype might be associated with resistance. These results demonstrate the presence of local genetic resources in Vietnamese chickens, which could be utilized in breeding programmes aiming at improving disease resistance

KW - Major Histocompability Complex

KW - MHC

KW - disease resistance

KW - chickens

KW - indigenous

KW - exotic

KW - Vietnam

KW - Ascaridia galli

KW - Salmonella Enteritidis

KW - Pasteurella multocida

U2 - 10.1016/j.vetimm.2009.10.030

DO - 10.1016/j.vetimm.2009.10.030

M3 - Journal article

C2 - 19945754

SN - 0165-2427

VL - 135

SP - 52

EP - 63

JO - Veterinary Immunology and Immunopathology

JF - Veterinary Immunology and Immunopathology

IS - 1-2

ER -