Detection of loci affecting milk production and health traits in an elite US Holstein population using microsatellite markers

M. S. Ashwell; C. E. Rexroad; R. H. Miller; P. M. VanRaden; Y. Da

doi:10.1111/j.1365-2052.1997.00115.x

Detection of loci affecting milk production and health traits in an elite US Holstein population using microsatellite markers

M. S. Ashwell, C. E. Rexroad, R. H. Miller, P. M. VanRaden, Y. Da

Animal Science

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Abstract

Quantitative trait loci (QTL) affecting health and milk production traits were studied in seven large half-sib US Holstein families by using the granddaughter design. Genotyping for 16 markers was completed and marker allele differences within and pooled-across families were analysed. Potential QTL were identified for somatic cell score (SCS), fat yield, fat percentage, protein yield and protein percentage. Three markers (BM203, BM4505 and BM2078) were associated with significant effects for different traits and, after further analysis, may be useful in marker-assisted selection in specific families. Comparisons between these data and previously identified QTL support the location of a QTL for milk yield and protein yield on chromosome 21.

Original language	English (US)
Pages (from-to)	216-222
Number of pages	7
Journal	Animal Genetics
Volume	28
Issue number	3
DOIs	https://doi.org/10.1111/j.1365-2052.1997.00115.x
State	Published - Jun 1997

Keywords

Dairy cattle
Microsatellite markers
Milk production
Quantitative trait loci
Somatic cell score

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abstract = "Quantitative trait loci (QTL) affecting health and milk production traits were studied in seven large half-sib US Holstein families by using the granddaughter design. Genotyping for 16 markers was completed and marker allele differences within and pooled-across families were analysed. Potential QTL were identified for somatic cell score (SCS), fat yield, fat percentage, protein yield and protein percentage. Three markers (BM203, BM4505 and BM2078) were associated with significant effects for different traits and, after further analysis, may be useful in marker-assisted selection in specific families. Comparisons between these data and previously identified QTL support the location of a QTL for milk yield and protein yield on chromosome 21.",

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AU - Ashwell, M. S.

AU - Rexroad, C. E.

AU - Miller, R. H.

AU - VanRaden, P. M.

AU - Da, Y.

PY - 1997/6

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KW - Dairy cattle

KW - Microsatellite markers

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KW - Quantitative trait loci

KW - Somatic cell score

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Detection of loci affecting milk production and health traits in an elite US Holstein population using microsatellite markers

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