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

Quantitative trait loci affecting fatness in the chicken.

C O N Ikeobi1, J A Woolliams, D R Morrice

  • 1Roslin Institute, Edinburgh, Scotland, UK.

Animal Genetics
|December 5, 2002
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

Understanding the hydrological and landscape connectivity of lakes.

Landscape ecology·2025
Same author

Detection of genetic variability in dairy cattle infectivity for bovine tuberculosis.

Journal of dairy science·2025
Same author

Gut microbial composition differs among FUNAAB Alpha broiler chicken genotypes raised in a tropical environment.

Microbial pathogenesis·2024
Same author

Corrigendum to "A comparison of the efficacy of trastuzumab deruxtecan in advanced HER2-positive breast cancer: active brain metastasis versus progressive extracranial disease alone": [ESMO Open 8 (2023) 102033].

ESMO open·2024
Same author

Additive and non-additive genetic variance in juvenile Sitka spruce (<i>Picea sitchensis</i> Bong. Carr).

Tree genetics & genomes·2023
Same author

A comparison of the efficacy of trastuzumab deruxtecan in advanced HER2-positive breast cancer: active brain metastasis versus progressive extracranial disease alone.

ESMO open·2023

Researchers mapped Quantitative Trait Loci (QTL) influencing fat deposition in chickens. Several QTLs were identified on different chromosomes, with one significantly impacting abdominal fat weight, offering insights into fat metabolism and breeding strategies.

Area of Science:

  • Animal Genetics
  • Quantitative Genetics
  • Poultry Science

Background:

  • Understanding genetic control of fat deposition is crucial for optimizing broiler production.
  • Identifying Quantitative Trait Loci (QTL) aids in marker-assisted selection for desirable traits.

Purpose of the Study:

  • To detect and map QTL affecting abdominal fat weight, skin fat weight, and fat distribution in an F2 chicken population.
  • To investigate the genetic architecture, including additive and dominance effects, of fat deposition traits.

Main Methods:

  • An F2 population (442 individuals) from broiler x layer crosses was genotyped with 102 microsatellite markers.
  • Within-family regression analyses were performed to identify QTL across 27 linkage groups.
  • Genome-wide significance thresholds were applied for QTL detection.

Related Experiment Videos

Main Results:

  • QTL for abdominal fat weight were identified on chromosomes 3, 7, 15, and 28.
  • Significant QTL were also detected for adjusted fat weights and skin fat, located on various chromosomes.
  • The largest additive QTL on chromosome 7 explained over 20% of the mean abdominal fat weight.

Conclusions:

  • Multiple QTL significantly influence fat deposition traits in chickens.
  • Genetic variation for fatness traits originates from both broiler and layer lines.
  • These findings provide a foundation for genetic improvement of fat content in poultry breeding programs.