Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Maternal effects on docility in Limousin cattle.

D W Beckman1, R M Enns, S E Speidel

  • 1Department of Animal Sciences, Colorado State University, Fort Collins, CO 80523-1171, USA.

Journal of Animal Science
|October 17, 2006
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Genome-wide association study of age at puberty and its (co)variances with fertility and stature in growing and lactating Holstein-Friesian dairy cattle.

Journal of dairy science·2023
Same author

Genome-wide association study of anogenital distance and its (co)variances with fertility in growing and lactating Holstein-Friesian dairy cattle.

Journal of dairy science·2023
Same author

Cumulative dairy cow genetic change from selection and crossbreeding over the last 2 decades in New Zealand closely aligns to model-based predictions published in 2000.

JDS communications·2022
Same author

Variance parameter estimation for age at puberty phenotypes under 2 levels of phenotype censorship.

JDS communications·2022
Same author

Erratum to "Cumulative dairy cow genetic change from selection and crossbreeding over the last 2 decades in New Zealand closely aligns to model-based predictions published in 2000" (JDS Commun. 2:51-54).

JDS communications·2022
Same author

Pregnancy status predicted using milk mid-infrared spectra from dairy cattle.

Journal of dairy science·2022

Maternal effects have a minor impact on docility in Limousin cattle, with direct genetic factors being more influential. Including maternal effects in genetic evaluations for docility is not recommended for Limousin cattle.

Area of Science:

  • Animal Genetics
  • Quantitative Genetics
  • Livestock Breeding

Background:

  • Docility is an important trait in beef cattle management, influencing safety and efficiency.
  • Understanding the genetic basis of docility, including maternal influences, is crucial for effective breeding programs.
  • Previous evaluations of docility in Limousin cattle primarily focused on direct genetic effects.

Purpose of the Study:

  • To quantify the contribution of maternal genetic and environmental effects on docility in Limousin cattle.
  • To compare different animal models incorporating various maternal effects for docility evaluation.
  • To determine the necessity of including maternal effects in the routine genetic evaluation of docility.

Main Methods:

  • Docility scores were collected from 21,932 Limousin cattle at weaning.

Related Experiment Videos

  • Six animal models were tested, including direct genetic, maternal genetic, and maternal permanent environmental effects.
  • Statistical analyses involved fixed effects (contemporary group, age of dam) and various random effects combinations.

    • Main Results:

    • Direct heritability estimates for docility were moderate across all models (0.29–0.38).
    • Maternal heritability estimates were low (0.01–0.05), and maternal permanent environmental effects accounted for a small proportion of phenotypic variance (2–4%).
    • The most complex model (DMC) best fit the data, but sire rankings for docility remained consistent with or without maternal effects.

    Conclusions:

    • While maternal genetic and permanent environmental effects are statistically significant, their overall contribution to phenotypic variance in docility is minimal.
    • The inclusion of maternal effects in the genetic evaluation of docility for Limousin cattle is not warranted due to minimal impact on sire rankings.
    • Focusing on direct genetic effects provides a robust basis for genetic selection for docility in this breed.