Genetic parameters among growth and carcass traits of Canadian Charolais cattle

Crews, D. H.; Lowerison, M. W.; Caron, N.; Kemp, R. A.

doi:10.4141/a04-019

Cited by 34 publications

(32 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Phenotypic performance across traits on aver age were similar to previous reports (Crews and Kemp, 2001;Crews et al, 2004). Furthermore, the heritability estimates for the studied traits in the validation popula tion were consistent with previous findings (for a review, see Rios Utrera and Van Vleck, 2004).…”

Section: Resultssupporting

confidence: 89%

Reliability of molecular breeding values for Warner-Bratzler shear force and carcass traits of beef cattle – An independent validation study1

Akanno

Plastow

Woodward³

et al. 2014

Journal of Animal Science

View full text Add to dashboard Cite

Interest in genetic improvement of carcass and tenderness traits of beef cattle using genome-based selection (GS) and marker-assisted management programs is increasing. The success of such a program depends on the presence of linkage disequilibrium between the observed markers and the underlying QTL as well as on the relationship between the discovery, validation, and target populations. For molecular breeding values (MBV) predicted for a target population using SNP markers, reliabilities of these MBV can be obtained from validation analyses conducted in an independent population distinct from the discovery set. The objective of this study was to test MBV predicted for carcass and tenderness traits of beef cattle in a Canadian-based validation population that is largely independent of a United States-based discovery set. The discovery data set comprised of genotypes and phenotypes from >2,900 multibreed beef cattle while the validation population consisted of 802 crossbred feeder heifers and steers. A bivariate animal model that fitted actual phenotype and MBV was used for validation analyses. The reliability of MBV was defined as square of the genetic correlation (R(2) g) that represents the proportion of the additive genetic variance explained by the SNP markers. Several scenarios involving different starting marker panels (384, 3K, 7K, and 50K) and different sets of SNP selected to compute MBV (50, 100, 200, 375, 400, 600, and 800) were investigated. Validation results showed that the most reliable MBV (R(2) g) were 0.34 for HCW, 0.36 for back fat thickness, 0.28 for rib eye area, 0.30 for marbling score, 0.25 for yield grade, and 0.38 for Warner-Bratzler shear force across the different scenarios explored. The results indicate that smaller SNP panels can be developed for use in genetic improvement of beef carcass and tenderness traits to exploit GS benefits.

show abstract

Section: Resultssupporting

confidence: 89%

Reliability of molecular breeding values for Warner-Bratzler shear force and carcass traits of beef cattle – An independent validation study1

Akanno

Plastow

Woodward³

et al. 2014

Journal of Animal Science

View full text Add to dashboard Cite

show abstract

“…Genetic correlation estimates for growth between live animals and carcasses were consistent with those obtained on other breeds by Fouilloux et al (1999Fouilloux et al ( , 2008, Splan et al (2002), Eriksson et al (2003) and Crews et al (2004).…”

Section: Impact Of Selection For Live Growth and Muscularity On Carcasupporting

confidence: 84%

Genetic parameters for growth, muscularity, feed efficiency and carcass traits of young beef bulls

et al. 2010

View full text Add to dashboard Cite

“…de Mattos et al, 2000;Crews et al, 2004;Giannotti et al, 2005), only a few studies have analyzed the growth rate of dairy breeds, and these studies have been based on small samples from experimental herds (Brotherstone et al, 2007). Thus, estimates of genetic parameters for dairy breeds tend to have large standard errors (s.e.…”

Section: Introductionmentioning

confidence: 99%

Genetic analysis of the growth rate of Israeli Holstein calves

Weller

Ezra²

2008

Animal

View full text Add to dashboard Cite

Weight of male and female Israeli Holstein calves and yearling gain were analyzed on 285 800 records from 105 935 animals from 458 herds recorded between 1994 and 2007. The difference between the sexes increased until around 400 days, at which point the difference between males and females was 110 kg. Yearling gain, defined as 365 3 (weight 2 35)/age 1 35, was greatest for males at approximately 300 days and for females at 225 days. Yearling gain of male and female calves were highly correlated genetically; thus records from both sexes were combined into a joint genetic analysis. Heritability and repeatability were 0.33 and 0.73 in the analysis of both sexes, and similar in the single-sex analyses. Yearling gain is also highly correlated genetically with various measures of mature cow size. Yearling gain was positively correlated with milk, fat, protein production and somatic cell score, but negatively correlated with fertility and cow survival. Yearling gain was also positively correlated with both the sire and maternal grandsire effects on dystocia, but not with calf mortality. The genetic trend for yearling gain was 0.16 kg/year, while phenotypic trends for first and last weighings were both negative.

show abstract

Genetic parameters among growth and carcass traits of Canadian Charolais cattle

Cited by 34 publications

References 9 publications

Reliability of molecular breeding values for Warner-Bratzler shear force and carcass traits of beef cattle – An independent validation study1

Reliability of molecular breeding values for Warner-Bratzler shear force and carcass traits of beef cattle – An independent validation study1

Genetic parameters for growth, muscularity, feed efficiency and carcass traits of young beef bulls

Genetic analysis of the growth rate of Israeli Holstein calves

Contact Info

Product

Resources

About