Estimation of Genetic Parameters on Carcass Traits for Estimated Breeding Value in Hanwoo Cow

Son, Ji-Hyun; Koo, Yang-Mo; Jeoung, Yeoung-Ho; Cha, Dae-Hyeop; Kim, Seong‐Jin; Choi, Tae-Jeong; Park, Mina; Lee, Deukhwan; Lee, Jihong

doi:10.14397/jals.2020.54.6.73

Cited by 1 publication

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Four carcass traits were routinely collected from steers and cows of Hanwoo cattle: carcass weight (CW), eye muscle area (EMA), backfat thickness (BF), and marbling score (MS). These carcass traits are among the economically important traits in Hanwoo (Kim et al 2021; Bedhane et al 2019 ; Mehrban et al 2019 ; Nwogwugwu et al 2020 ; Son et al 2020 ; Seo et al 2022 ). An updated scheme for data recording were introduced for Hanwoo in 2008.…”

Section: Methodsmentioning

confidence: 99%

“…For an animal with phenotypic records of carcass traits, the following multi-trait model was used, as described by Son et al (2020) :…”

Section: Methodsmentioning

confidence: 99%

“…The variance and covariance components for additive genetic and random error effects were obtained from a recent study ( Son et al 2020 ) on carcass traits of Hanwoo for single-step evaluation. The heritability values ranged from 0.28 to 0.48.…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Genomic evaluation of carcass traits of Korean beef cattle Hanwoo using a single-step marker effect model

Koo¹,

Alkhoder²,

Choi

et al. 2023

Journal of Animal Science

Self Cite

View full text Add to dashboard Cite

Hanwoo beef cattle are well known for the flavor and tenderness of their meat. Genetic improvement programs have been extremely successful over the last 40 years. Recently, genomic selection was initiated in Hanwoo to enhance genetic progress. Routine genomic evaluation based on the single-step breeding value model was implemented in 2020 for all economically important traits. In this study, we tested a single-step marker effect model for the genomic evaluation of four carcass traits, namely, carcass weight, eye muscle area, backfat thickness, and marbling score. In total, 8,023,666 animals with carcass records were jointly evaluated, including 29,965 genotyped animals. To assess the prediction stability of the single-step model, carcass data from the last four years were removed in a forward validation study. The estimated genomic breeding values (GEBV) of the validation animals and other animals were compared between the truncated and full evaluations. A parallel conventional best linear unbiased prediction (BLUP) evaluation with either the full or the truncated dataset was also conducted for comparison with the single-step model. The estimates of the marker effect from the truncated evaluation were highly correlated with those from the full evaluation, ranging from 0.88–0.92. The regression coefficients of the estimates of the marker effect for the full and truncated evaluations were close to their expected value of 1, indicating unbiased estimates for all carcass traits. Estimates of the marker effect revealed three chromosomal regions (chromosomes 4, 6, and 14) harboring the major genes for carcass weight in Hanwoo. For validation of cows or steers, the single-step model had a much higher R2 value for the linear regression model than the conventional BLUP model. Based on the regression intercept and slope of the validation, the single-step evaluation was neither inflated nor deflated. For genotyped animals, the estimated GEBV from the full and truncated evaluations were more correlated than the estimated breeding values from the two conventional BLUP evaluations. The single-step model provided a more accurate and stable evaluation over time.

show abstract

Section: Methodsmentioning

confidence: 99%

“…For an animal with phenotypic records of carcass traits, the following multi-trait model was used, as described by Son et al (2020) :…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Genomic evaluation of carcass traits of Korean beef cattle Hanwoo using a single-step marker effect model

Koo¹,

Alkhoder²,

Choi

et al. 2023

Journal of Animal Science

Self Cite

View full text Add to dashboard Cite

show abstract

Estimation of Genetic Parameters on Carcass Traits for Estimated Breeding Value in Hanwoo Cow

Cited by 1 publication

References 23 publications

Genomic evaluation of carcass traits of Korean beef cattle Hanwoo using a single-step marker effect model

Genomic evaluation of carcass traits of Korean beef cattle Hanwoo using a single-step marker effect model

Contact Info

Product

Resources

About