• Home
  • Browse
    • Current Issue
    • By Issue
    • By Author
    • By Subject
    • Author Index
    • Keyword Index
  • Journal Info
    • About Journal
    • Aims and Scope
    • Editorial Board
    • Publication Ethics
    • Peer Review Process
  • Guide for Authors
  • Submit Manuscript
  • Contact Us
 
  • Login
  • Register
Home Articles List Article Information
  • Save Records
  • |
  • Printable Version
  • |
  • Recommend
  • |
  • How to cite Export to
    RIS EndNote BibTeX APA MLA Harvard Vancouver
  • |
  • Share Share
    CiteULike Mendeley Facebook Google LinkedIn Twitter
Journal of Animal and Poultry Production
arrow Articles in Press
arrow Current Issue
Journal Archive
Volume Volume 16 (2025)
Volume Volume 15 (2024)
Volume Volume 14 (2023)
Volume Volume 13 (2022)
Volume Volume 12 (2021)
Volume Volume 11 (2020)
Volume Volume 10 (2019)
Volume Volume 9 (2018)
Volume Volume 8 (2017)
Volume Volume 7 (2016)
Volume Volume 6 (2015)
Volume Volume 5 (2014)
Volume Volume 4 (2013)
Volume Volume 3 (2012)
Volume Volume 2 (2011)
Volume Volume 1 (2010)
Volume Volume 34 (2009)
Volume Volume 33 (2008)
Volume Volume 32 (2007)
Volume Volume 31 (2006)
Issue Issue 12
Issue Issue 11
Issue Issue 10
Issue Issue 9
Issue Issue 8
Issue Issue 6
Issue Issue 5
Issue Issue 4
Issue Issue 3
Issue Issue 2
Issue Issue 1
Volume Volume 30 (2005)
Volume Volume 29 (2004)
Volume Volume 28 (2003)
Volume Volume 27 (2002)
Volume Volume 26 (2001)
Volume Volume 25 (2000)
Mostafa,, M. (2006). GENETIC EVALUATION OF MILK PRODUCTION AND REPRODUCTION TRAITS IN HOLSTEIN FRIESIAN RAISED IN HUNGARY USING SINGLE—AND MULTI-TRAIT ANIMAL MODEL ANALYSES. Journal of Animal and Poultry Production, 31(10), 6217-6231. doi: 10.21608/jappmu.2006.235630
M. A. Mostafa,. "GENETIC EVALUATION OF MILK PRODUCTION AND REPRODUCTION TRAITS IN HOLSTEIN FRIESIAN RAISED IN HUNGARY USING SINGLE—AND MULTI-TRAIT ANIMAL MODEL ANALYSES". Journal of Animal and Poultry Production, 31, 10, 2006, 6217-6231. doi: 10.21608/jappmu.2006.235630
Mostafa,, M. (2006). 'GENETIC EVALUATION OF MILK PRODUCTION AND REPRODUCTION TRAITS IN HOLSTEIN FRIESIAN RAISED IN HUNGARY USING SINGLE—AND MULTI-TRAIT ANIMAL MODEL ANALYSES', Journal of Animal and Poultry Production, 31(10), pp. 6217-6231. doi: 10.21608/jappmu.2006.235630
Mostafa,, M. GENETIC EVALUATION OF MILK PRODUCTION AND REPRODUCTION TRAITS IN HOLSTEIN FRIESIAN RAISED IN HUNGARY USING SINGLE—AND MULTI-TRAIT ANIMAL MODEL ANALYSES. Journal of Animal and Poultry Production, 2006; 31(10): 6217-6231. doi: 10.21608/jappmu.2006.235630

GENETIC EVALUATION OF MILK PRODUCTION AND REPRODUCTION TRAITS IN HOLSTEIN FRIESIAN RAISED IN HUNGARY USING SINGLE—AND MULTI-TRAIT ANIMAL MODEL ANALYSES

Article 5, Volume 31, Issue 10, October 2006, Page 6217-6231  XML PDF (194.82 K)
Document Type: Original Article
DOI: 10.21608/jappmu.2006.235630
View on SCiNiTO View on SCiNiTO
Author
M. A. Mostafa,
Animal Production Department, Faculty of Agriculture. Mansoura University, El-Mansoura, Egypt.
Abstract
A total of 3165 normal first lactation records of Holstein-Friesian cows Kept at
Mezoheges State Farm, Hungary collected during the period from 1982 to 1990 were
used. The number of sires and the average number of daughters per sire were 281
and 11.3, respectively. The data were used to evaluate genetic parameters and
breeding values for milk production and reproduction traits by using single-trait and
multi-trait animal model. Each of reproduction trait, as well as persistency of milk yield
was joined with milk yield. Spearman rank correlation based on EBVs of all animals
(sires) for trait studied from single trait and tw0-trait analyses with milk yield were
estimated. Production Traits studied were: 305 — day milk yield (305-d My), 305-day
fat yield (305—d Fy), maximum daily milk yield (MdMY): days in milk (DIM) age at first
calving (AFC), days open (DO), number of services per conception (NSC) and
persistency of milk yield (Per My).
Unadjusted means of AFC, DO, NSC, DIM, Per My, MdMy, 305-d My and 305-
d Fy were 24.4 month, 133.6 day 2.1, 334.9 day, 76.7%, 27.3 Kg, 6568 Kg and 243.9
Kg, respectively. Estimates of heritability (hz) of AFC, DO, NSC were 0.06, 0.11 and
0.07, respectively; while for DIM, Per My, MdMy, 305-d My and 305-d Fy were 0.05,
0.08, 0.29, 0.26 and 0.29, respectively. The standard errors (SE) of h"2 ranged from
 
0.02 to 0.04 for all traits studied, using single-trait analyses. Minor differences were
observed in h2 from single-trait versus two-trait genetic analyses. Estimates of genetic
and phenotypic correlations between productive traits and reproductive traits were
positive and medium to high; between Per My and each of D0 and NSC were
negative and low; between production traits and AFC were positive and moderate.
The genetic and phenotypic correlation between AFC and Per My were positive and
medium.
The results indicated higher breeding values (EBVs) for two—trait than single-
trait analyses for all animals (sires). Low rank correlations between single-trait and
two-trait analyses with milk yield of all animal or only sires (0.56 — 0.99 and 0.71 —
0.99, respectively) for sires indicated that re—ranking of sires would be considered
between the Mo methods. The present results indicate the antagonistic relationship < /p>
of production with reproduction traits. Therefore, evaluation of the sire role as well
cow on reproduction must be taken into consideration and subsequently incorporated
into a muIti-trait selection index.
Keywords
Holst-2m; rnrm production; reproduction; persistency; Dr-céifig vii-"res. genetrc parameters; single-and muiii-irait animal model; Hungary
Statistics
Article View: 86
PDF Download: 225
Home | Glossary | News | Aims and Scope | Sitemap
Top Top

Journal Management System. Designed by NotionWave.