{"title":"Estimation of Genetic Parameters for Six Economic Traits in Beijing Holstein Cows.","authors":"Yekai Fan, Jinxin Wang, Qiuling Li, Yufang Liu, Lv Qiao, Wanhai Shi, Yuze Yang, Wenping Hu, Mingxing Chu","doi":"10.1002/vms3.70340","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Chinese Holstein is a dairy cattle breed developed through crossbreeding and long-term selection. The Beijing Holstein represents a distinct population within the Chinese Holstein breed, specifically bred in the Beijing region.</p><p><strong>Objectives: </strong>This study aimed to estimate the genetic parameters for six economic traits in Beijing Holstein cows.</p><p><strong>Methods: </strong>Data from 5409 Beijing Holstein cows across 13 dairy farms were analysed by MTDFREML and SAS software. The linear univariate and bivariate animal model analyses were employed to estimate heritabilities and genetic correlations, respectively.</p><p><strong>Results: </strong>Heritabilities of milk yield in 305 days (d), fat percentage, protein percentage, somatic cell score (SCS), lactose percentage and dry matter percentage were 0.08, 0.17, 0.20, 0.10, 0.16 and 0.26, respectively. Most genetic correlations aligned in direction and magnitude with their phenotypic correlations. Notably, dry matter percentage exhibited strong positive genetic correlations with fat percentage (0.96), protein percentage (0.74) and lactose percentage (0.70). The genetic correlations were moderately significant negative between dry matter percentage and milk yield in 305 d (-0.39), between SCS and dry matter percentage (-0.26), between SCS and lactose percentage (-0.30), and between SCS and fat percentage (-0.38).</p><p><strong>Conclusions: </strong>On the basis of the genetic parameters and their economic significance, the milk yield in 305 d, fat percentage, protein percentage and SCS would be selected as breeding goal traits with different direction and extent of weight. A balanced breeding approach targeting these traits is essential to enhance overall production performance. This study provides foundational data for evaluating the production potential of Beijing Holstein cows and supports informed breeding decisions.</p>","PeriodicalId":23543,"journal":{"name":"Veterinary Medicine and Science","volume":"11 3","pages":"e70340"},"PeriodicalIF":1.8000,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12038746/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Veterinary Medicine and Science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1002/vms3.70340","RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"VETERINARY SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Background: Chinese Holstein is a dairy cattle breed developed through crossbreeding and long-term selection. The Beijing Holstein represents a distinct population within the Chinese Holstein breed, specifically bred in the Beijing region.
Objectives: This study aimed to estimate the genetic parameters for six economic traits in Beijing Holstein cows.
Methods: Data from 5409 Beijing Holstein cows across 13 dairy farms were analysed by MTDFREML and SAS software. The linear univariate and bivariate animal model analyses were employed to estimate heritabilities and genetic correlations, respectively.
Results: Heritabilities of milk yield in 305 days (d), fat percentage, protein percentage, somatic cell score (SCS), lactose percentage and dry matter percentage were 0.08, 0.17, 0.20, 0.10, 0.16 and 0.26, respectively. Most genetic correlations aligned in direction and magnitude with their phenotypic correlations. Notably, dry matter percentage exhibited strong positive genetic correlations with fat percentage (0.96), protein percentage (0.74) and lactose percentage (0.70). The genetic correlations were moderately significant negative between dry matter percentage and milk yield in 305 d (-0.39), between SCS and dry matter percentage (-0.26), between SCS and lactose percentage (-0.30), and between SCS and fat percentage (-0.38).
Conclusions: On the basis of the genetic parameters and their economic significance, the milk yield in 305 d, fat percentage, protein percentage and SCS would be selected as breeding goal traits with different direction and extent of weight. A balanced breeding approach targeting these traits is essential to enhance overall production performance. This study provides foundational data for evaluating the production potential of Beijing Holstein cows and supports informed breeding decisions.
期刊介绍：
Veterinary Medicine and Science is the peer-reviewed journal for rapid dissemination of research in all areas of veterinary medicine and science. The journal aims to serve the research community by providing a vehicle for authors wishing to publish interesting and high quality work in both fundamental and clinical veterinary medicine and science.
Veterinary Medicine and Science publishes original research articles, systematic reviews, meta-analyses, and research methods papers, along with invited editorials and commentaries. Original research papers must report well-conducted research with conclusions supported by the data presented in the paper.
We aim to be a truly global forum for high-quality research in veterinary medicine and science, and believe that the best research should be published and made widely accessible as quickly as possible. Veterinary Medicine and Science publishes papers submitted directly to the journal and those referred from a select group of prestigious journals published by Wiley-Blackwell.
Veterinary Medicine and Science is a Wiley Open Access journal, one of a new series of peer-reviewed titles publishing quality research with speed and efficiency. For further information visit the Wiley Open Access website.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
