Estimation of breeding value, genetic variation of reproductive performance by genotyping of DRB3 gene in Holstein cows
DOI:
https://doi.org/10.36077/kjas/2025/v17i4.13555Keywords:
DRB3 gene information, Breeding value, Reproductive traits, Holstein cowsAbstract
This study was carried out in Al-salam station for Dairy cattle, from January/11/2016 to January/11/2017, on 50 Holsein cows to study the effect of DRB3 gene information and estimate gene substitution, breeding value, dominance deviation which leads to genetic variation for services per conception and days open depending on DRB3 gene information. the results show a significant impact (p<0.05) of gene polymorphism on both traits, cows with AA genotype were better than cows with AB, BB respectively, also cows with AA genotype were better than cows with AB, BB genotype in breeding value for both traits, the variance value tended to additive variance at the expense of dominance variance for both traits, the effect was positive for the genetic replacement of the A allele compared to the B allele for both traits. This supports the selection of the A allele when it is present in homozygotes or heterozygotes for genetic data used in breeding programs and its importance for both traits.
Downloads
Downloads
Published
Issue
Section
License
Copyright (c) 2025 Firas Ahmed Mahmood, Al-Waith H.K, Maad Hasani Al-Ameri
This work is licensed under a Creative Commons Attribution 4.0 International License.
Kufa Journal for Agricultural Sciences is licensed under the Creative Commons Attribution 4.0 International License, which allows users to copy, to create extracts, abstracts and new works from the Article, to alter and revise the Article, and to make commercial use of the Article (including reuse and/or resale of the Article by commercial entities), provided the user gives appropriate credit (with a link to the formal publication through the relevant DOI), provides a link to the license, indicates if changes were made and the licensor is not represented as endorsing the use made of the work. The authors hold the copyright for their published work on KJAS website, while KJAS responsible for appreciate citation for their work, which is released under CC-BY-4.0 enabling the unrestricted use, distribution, and reproduction of an article in any medium, provided that the original work is properly cited.
How to Cite
