Elisa Marques

Genome-wide association study for feed efficiency and growth traits in U.S. beef cattle

Christopher M. Seabury, David L. Oldeschulte, Mahdi Saatchi, Jonathan E. Beever et autres

BACKGROUND: Single nucleotide polymorphism (SNP) arrays for domestic cattle have catalyzed the identification of genetic markers associated with complex traits for inclusion in modern breeding and selection programs. Using actual and imputed Illumina 778K genotypes for 3887 U.S. beef cattle from 3 …

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Additional file 1: of Genome-wide association study for feed efficiency and growth traits in U.S. beef cattle

Christopher M. Seabury, David L. Oldeschulte, Mahdi Saatchi, Jonathan E. Beever et autres

Summary data for all lead and supporting SNPs from the 778K analyses for RFI, DMI, ADG, and MMWT, including dbSNP identifiers and QTL coordinates. (XLSX 710 kb)

QTLs associated with dry matter intake, metabolic mid-test weight, growth and feed efficiency have little overlap across 4 beef cattle studies

Mahdi Saatchi, Jonathan E. Beever, Jared E. Decker, Dan B. Faulkner et autres

BACKGROUND: The identification of genetic markers associated with complex traits that are expensive to record such as feed intake or feed efficiency would allow these traits to be included in selection programs. To identify large-effect QTL, we performed a series of genome-wide …

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Exercise

Jorge Augusto Pinto Silva Mota, Elisa Marques

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Imputation of microsatellite alleles from dense SNP genotypes for parentage verification across multiple Bos taurus and Bos indicus breeds

Matthew Charles McClure, Tad Stewart Sonstegard, George R Wiggans, Alison Louise Van Eenennaam et autres

To assist cattle producers transition from microsatellite (MS) to single nucleotide polymorphism (SNP) genotyping for parental verification we previously devised an effective and inexpensive method to impute MS alleles from SNP haplotypes. While the reported method was verified with only a limited …

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Impact of selection for residual feed intake on breeding soundness and reproductive performance of bulls on pasture-based multisire mating1

Z. Wang, M.G. Colazo, J. A. Basarab, L. A. Goonewardene et autres

There is concern in the beef industry that selecting bulls for feed efficiency based on residual feed intake (RFI) may have a negative impact on bull reproductive performance and fertility. Here we investigated the impact of selection of bulls for low RFI …

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Identification of candidate markers on bovine chromosome 14 (BTA14) under milk production trait quantitative trait loci in Holstein

Elisa Marques, Jason R. Grant, Z. Wang, Davood Kolbehdari et autres

The objective of this study was to identify single-nucleotide polymorphisms using a bovine chromosome 14 high-density SNP panel after accounting for the effect of DGAT1. Linkage disequilibrium information and sire heterozygosity were used to select markers for linkage analysis on bovine chromosome …

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Education for citizenship: Paths of discovery in adult arts education

Jorge Alexandre Santos, Elisa Marques

A whole genome scan to map QTL for milk production traits and somatic cell score in Canadian Holstein bulls

Davood Kolbehdari, Z. Wang, Jason R. Grant, Brenda M. Murdoch et autres

The detection and mapping of genetic markers linked to quantitative trait loci (QTL) can be utilized to enhance genetic improvement of livestock populations. With the completion of the bovine genome sequence assembly, single nucleotide polymorphisms (SNP) assays spanning the whole bovine genome …

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Polymorphisms in positional candidate genes on BTA14 and BTA26 affect carcass quality in beef cattle

Elisa Marques, J. D. Nkrumah, E. Laura Sherman, S. S. Moore

Several studies have reported the presence of carcass quality QTL on BTA14 and BTA26, with no specific genes being conclusively linked as their cause. The aim of this study was to identify polymorphisms in genes known to affect lipid metabolism in other …

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The Genome Sequence of Taurine Cattle: A Window to Ruminant Biology and Evolution

Christine G. Elsik, Ross L. Tellam, Kim C. Worley, Richard A. Gibbs et autres

To understand the biology and evolution of ruminants, the cattle genome was sequenced to about sevenfold coverage. The cattle genome contains a minimum of 22,000 genes, with a core set of 14,345 orthologs shared among seven mammalian species of which 1217 are …

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Application of genomics-based tools leading to the identification of markers on bovine chromosome 14 influencing milk production and carcass quality traits

Elisa Marques

Genetic improvements in beef and dairy cattle can bring significant advances in satisfying the global food demand, which is expected to double by 2050. Several DNA markers have been identified on bovine chromosome 14 (BTA14), but low mapping resolution prevents their refinement …