| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
1 Agricultural Research Service, USDA, Beltsville, MD 20705
Quantitative trait loci affecting conformational type traits were studied in seven large grandsire families of US Holsteins using the granddaughter design and 16 microsatellite markers on 10 chromosomes. The most significant marker effect was marker BM203 (chromosome 27) for dairy form in a single grandsire family. A multivariate analysis for dairy form and milk yield was also conducted, and the result was highly significant, indicating that a segregating quantitative trait locus or loci affecting dairy form and milk yield could exist near BM203 on chromosome 27. Marker BM1258 (chromosome 23) had a significant effect on udder depth. A multivariate analysis on udder depth and somatic cell score was conducted for markers 513 and BM1258, and both markers showed significant effects on these two traits, indicating that one or several quantitative trait loci affecting udder depth and mastitis might exist on chromosome 23. Marker BM4204 (chromosome 9) had a significant effect on foot angle and on the composite index of traits pertaining to feet and legs, indicating that one or several quantitative trait loci affecting traits pertaining to feet and legs might exist on chromosome 9. Selection on these markers could increase genetic progress within these families.
Key Words: quantitative trait loci • microsatellite markers • type traits • dairy cattle
Submitted on April 14, 1997
Accepted on November 6, 1997
This article has been cited by other articles:
|
|
 |
|
  A. J. Buitenhuis, M. S. Lund, J. R. Thomasen, B. Thomsen, V. H. Nielsen, C. Bendixen, and B. Guldbrandtsen Detection of Quantitative Trait Loci Affecting Lameness and Leg Conformation Traits in Danish Holstein Cattle J Dairy Sci, January 1, 2007; 90(1): 472 - 481. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Holmberg and L. Andersson-Eklund Quantitative Trait Loci Affecting Health Traits in Swedish Dairy Cattle J Dairy Sci, August 1, 2004; 87(8): 2653 - 2659. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. P. Van Tassell, T. S. Sonstegard, and M. S. Ashwell Mapping Quantitative Trait Loci Affecting Dairy Conformation to Chromosome 27 in Two Holstein Grandsire Families J Dairy Sci, February 1, 2004; 87(2): 450 - 457. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Ch. Kuhn, J. Bennewitz, N. Reinsch, N. Xu, H. Thomsen, C. Looft, G. A. Brockmann, M. Schwerin, C. Weimann, S. Hiendleder, et al. Quantitative Trait Loci Mapping of Functional Traits in the German Holstein Cattle Population J Dairy Sci, January 1, 2003; 86(1): 360 - 368. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 D. W. HEYEN, J. I. WELLER, M. RON, M. BAND, J. E. BEEVER, E. FELDMESSER, Y. DA, G. R. WIGGANS, P. M. VANRADEN, and H. A. LEWIN A genome scan for QTL influencing milk production and health traits in dairy cattle Physiol Genomics, November 11, 1999; 1(3): 165 - 175. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
