Journal
COMPARATIVE IMMUNOLOGY MICROBIOLOGY AND INFECTIOUS DISEASES
Volume 48, Issue -, Pages 33-40Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cimid.2016.07.004
Keywords
Swine leukocyte antigen; Genotype; Haplotype; Disease association; Mycoplasmal pneumonia
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Funding
- Animal Genome Research Project of the Ministry of Agriculture, Forestry and Fisheries of Japan [2101]
- Project of Animal Genomics for Innovative Breeding Technology of the Ministry of Agriculture, Forestry and Fisheries of Japan [AGB1002]
- Grants-in-Aid for Scientific Research [16H06502] Funding Source: KAKEN
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By selective breeding for five generations, a Landrace line has been recently established to improve resistance to mycoplasmal pneumonia of swine (MPS), daily gain (DG), back fat thickness (BF), and plasma cortisol concentrations (COR). To clarify the involvement of swine leukocyte antigen (SLA) polymorphisms in the selection process, we investigated possible associations of 11 SLA-class II haplotypes with selected traits or immune parameters. Pigs with the low-resolution SLA haplotype Lr-0.23 or Lr-0.13, which increased in frequency with the passage of generations, had less severe pathological lesions of MPS, increased leukocyte phagocytic activity, and higher white blood cell counts. In contrast, Lr-0.12 and Lr-0.2, which decreased in subsequent generations, were weakly associated with more severe pathological lesions of MPS. Therefore, in the studied Landrace line, the Lr-0.23 and Lr-0.13 haplotypes are potentially useful genetic markers for selecting and breeding animals with less severe pathological lesions of MPS. (C) 2016 Elsevier Ltd. All rights reserved.
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