COMPONENTS OF (CO)VARIANCE FOR AGE AT FIRST AND SECOND CALVING OF NELLORE FEMALES RAISED IN SOUTHERN BRAZIL

COMPONENTS OF (CO)VARIANCE FOR AGE AT FIRST AND SECOND CALVING OF NELLORE FEMALES RAISED IN SOUTHERN BRAZIL

The objective of this study was to estimate the heritability, genetic correlation and estimated breeding values for age at first (AFC) and second calving (ASC) for Nellore females raised in Southern Brazil. The (co)variance and estimated breeding values were obtained using Bayesian inference in a bi...

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Main Authors: Dionéia Magda Everling, Camila Urbano Braz, Fernanda Cristina Breda, Paulo Roberto Nogara Rorato
Format: Article
Language:English
Published: Universidade Federal de Goiás 2015-10-01
Series:Ciência Animal Brasileira
Subjects:
Bayesian inference
beef cattle
genetic parameters
fertility
Online Access:http://www.revistas.ufg.br/index.php/vet/article/view/28131/19442
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spelling doaj-baf0a27e97ef45e293a49206874ad2912020-11-25T03:57:09ZengUniversidade Federal de GoiásCiência Animal Brasileira1518-27971809-68912015-10-0116447448010.1590/1089-6891v16i428131COMPONENTS OF (CO)VARIANCE FOR AGE AT FIRST AND SECOND CALVING OF NELLORE FEMALES RAISED IN SOUTHERN BRAZILDionéia Magda Everling0Camila Urbano Braz1Fernanda Cristina Breda2Paulo Roberto Nogara Rorato3Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Sul, IFRS, Ibirubá, RS, BrazilFaculdade de Ciências Agrárias e Veterinárias, UNESP, Jaboticabal, SP, BrazilUniversidade Federal de Santa Maria, UFSM, Santa Maria, RS, BrazilUniversidade Federal de Santa Maria, UFSM, Santa Maria, RS, BrazilThe objective of this study was to estimate the heritability, genetic correlation and estimated breeding values for age at first (AFC) and second calving (ASC) for Nellore females raised in Southern Brazil. The (co)variance and estimated breeding values were obtained using Bayesian inference in a bivariate analysis, adopting an animal model. The average ages were 49.30 and 69.85 months, and the heritabilities were 0.25 and 0.26, respectively for AFC and ASC. The genetic correlation between AFC and ASC was 0.88. The correlation between the classifications of sires according to their estimated breeding values was 0.93. The heritability estimates for AFC and ASC suggest the possibility of obtaining genetic gain by selection. The correlation between these traits close to one indicates that they are controlled by virtually the same genes and when selected for one will advance correlated gain for the other. http://www.revistas.ufg.br/index.php/vet/article/view/28131/19442Bayesian inferencebeef cattlegenetic parametersfertility
collection DOAJ
language English
format Article
sources DOAJ
author Dionéia Magda Everling
Camila Urbano Braz
Fernanda Cristina Breda
Paulo Roberto Nogara Rorato
spellingShingle Dionéia Magda Everling
Camila Urbano Braz
Fernanda Cristina Breda
Paulo Roberto Nogara Rorato
COMPONENTS OF (CO)VARIANCE FOR AGE AT FIRST AND SECOND CALVING OF NELLORE FEMALES RAISED IN SOUTHERN BRAZIL
Ciência Animal Brasileira
Bayesian inference
beef cattle
genetic parameters
fertility
author_facet Dionéia Magda Everling
Camila Urbano Braz
Fernanda Cristina Breda
Paulo Roberto Nogara Rorato
author_sort Dionéia Magda Everling
title COMPONENTS OF (CO)VARIANCE FOR AGE AT FIRST AND SECOND CALVING OF NELLORE FEMALES RAISED IN SOUTHERN BRAZIL
title_short COMPONENTS OF (CO)VARIANCE FOR AGE AT FIRST AND SECOND CALVING OF NELLORE FEMALES RAISED IN SOUTHERN BRAZIL
title_full COMPONENTS OF (CO)VARIANCE FOR AGE AT FIRST AND SECOND CALVING OF NELLORE FEMALES RAISED IN SOUTHERN BRAZIL
title_fullStr COMPONENTS OF (CO)VARIANCE FOR AGE AT FIRST AND SECOND CALVING OF NELLORE FEMALES RAISED IN SOUTHERN BRAZIL
title_full_unstemmed COMPONENTS OF (CO)VARIANCE FOR AGE AT FIRST AND SECOND CALVING OF NELLORE FEMALES RAISED IN SOUTHERN BRAZIL
title_sort components of (co)variance for age at first and second calving of nellore females raised in southern brazil
publisher Universidade Federal de Goiás
series Ciência Animal Brasileira
issn 1518-2797
1809-6891
publishDate 2015-10-01
description The objective of this study was to estimate the heritability, genetic correlation and estimated breeding values for age at first (AFC) and second calving (ASC) for Nellore females raised in Southern Brazil. The (co)variance and estimated breeding values were obtained using Bayesian inference in a bivariate analysis, adopting an animal model. The average ages were 49.30 and 69.85 months, and the heritabilities were 0.25 and 0.26, respectively for AFC and ASC. The genetic correlation between AFC and ASC was 0.88. The correlation between the classifications of sires according to their estimated breeding values was 0.93. The heritability estimates for AFC and ASC suggest the possibility of obtaining genetic gain by selection. The correlation between these traits close to one indicates that they are controlled by virtually the same genes and when selected for one will advance correlated gain for the other.
topic Bayesian inference
beef cattle
genetic parameters
fertility
url http://www.revistas.ufg.br/index.php/vet/article/view/28131/19442
work_keys_str_mv AT dioneiamagdaeverling componentsofcovarianceforageatfirstandsecondcalvingofnellorefemalesraisedinsouthernbrazil
AT camilaurbanobraz componentsofcovarianceforageatfirstandsecondcalvingofnellorefemalesraisedinsouthernbrazil
AT fernandacristinabreda componentsofcovarianceforageatfirstandsecondcalvingofnellorefemalesraisedinsouthernbrazil
AT paulorobertonogararorato componentsofcovarianceforageatfirstandsecondcalvingofnellorefemalesraisedinsouthernbrazil
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