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Journal of Dairy Science Vol. 78 No. 8 1684-1692
© 1995 by American Dairy Science Association ®
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Analysis of Associations Between Major Histocompatibility Complex (BoLA) Class I Haplotypes and Subclinical Mastitis of Dairy Cows

F. U. Aarestrup 1, N. E. Jensen 1, and H. Østergård 2

1 Danish Veterinary Laboratory, DK-1790 Copenhagen V, Denmark
2 The Royal Veterinary and Agricultural University, Department of Animal Science and Health, Copenhagen, Denmark

The associations between BoLA class I haplotypes and subclinical mastitis were investigated using information on 333 cows from three different breeds and crossbreeds from 14 dairy herds in Denmark. Somatic cell count and bacteriological status were used as markers for subclinical mastitis. Associations between BoLA class I haplotypes and IMI status were also determined. The association between BoLA class I haplotypes and subclinical mastitis was weak. The A10(W50), A11, A12(A30), A16, A19(A6), A21, A26, and A31(A30) alleles were associated with different markers of subclinical mastitis. Susceptibility or resistance to the two bacteria categories was associated with different alleles. This study indicated that BoLA antigens may be involved in resistance to mastitis and that resistance may be specific for a particular pathogen.

Key Words: mastitis • BoLA • major histocompatibility complex • staphylococci

Submitted on September 26, 1994
Accepted on March 24, 1995




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R. Rupp, A. Hernandez, and B. A. Mallard
Association of Bovine Leukocyte Antigen (BoLA) DRB3.2 with Immune Response, Mastitis, and Production and Type Traits in Canadian Holsteins
J Dairy Sci, February 1, 2007; 90(2): 1029 - 1038.
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Copyright © 1995 by the American Dairy Science Association ®.