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This article in JAS

  1. Vol. 89 No. 4, p. 907-915
     
    Received: July 20, 2010
    Accepted: Dec 02, 2010
    Published: December 4, 2014


    2 Corresponding author(s): neibergs@wsu.edu
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doi:10.2527/jas.2010-3330

Loci on Bos taurus chromosome 2 and Bos taurus chromosome 26 are linked with bovine respiratory disease and associated with persistent infection of bovine viral diarrhea virus1

  1. H. Neibergs 2,
  2. R. Zanella*,
  3. E. Casas,
  4. G. D. Snowder,
  5. J. Wenz§,
  6. J. S. Neibergs# and
  7. D. Moore§
  1. Department of Animal Sciences, Washington State University, Pullman 99164;
    US Meat Animal Research Center, USDA, ARS, Clay Center, NE 68933;
    National Center for Foreign Animal and Zoonotic Disease Defense, Texas A&M University, College Station 77845; and
    Department of Veterinary Clinical Sciences, and
    Department of Economic Sciences, Washington State University, Pullman 99164

ABSTRACT

ABSTRACT

The objective of this study was to identify loci linked with bovine respiratory disease (BRD) and subsequently to determine if these same loci were associated with bovine viral diarrhea virus persistent infection (BVD-PI) in affected calves or their dams. A genome-wide linkage study using 312 microsatellites was conducted to identify loci linked with BRD in a Brahman × Hereford sire half-sib family. Disease incidence was recorded from birth to slaughter by daily monitoring. Linkage was suggestive for a QTL on BTA2 (F = 7.31, P = 0.007) and BTA26 (F = 10.46, P = 0.001). Six and 7 markers were added and genotyped between 110 and 126 cM on BTA2 and between 42 and 72 cM on BTA26, respectively, in the intervals where linkage was found. These markers were used to reevaluate the Brahman × Hereford family and to evaluate 3 additional crossbred half-sib families. Linkage was found with BRD on BTA2 (F = 4.94, P < 0.01), with a peak at 110 cM, and on BTA26 (F = 4.03, P < 0.05), with peaks at 42 and 52 cM. The same markers were then tested for an association with BVD-PI in 1) BVD-PI calves compared with age-matched unaffected calves from the same herd or 2) dams with BVD-PI compared with age-matched unaffected calves. Sixty commercial beef cow-calf herds were tested for BVD-PI, and 79 calves from 8 ranches had BVD-PI. Four of 6 markers were associated (P = 4.8 × 10−9 to P = 0.01) with BVD-PI on BTA2, and 4 of 7 markers were associated (P = 0.008 to P = 0.04) with BVD-PI on BTA26 when BVD-PI calves were compared with unaffected calves. The comparison of BVD-PI dams with unaffected calves detected associations with BVD-PI for all markers tested on BTA2 (P = 3 × 10−9 to P = 0.005) and for 3 of 7 markers on BTA26 (P = 1.4 × 10−6 to P = 0.006).

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