Estimates of genetic and phenotypic parameters for reproductive traits in Iranian native Kordi sheep
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Scientiarum. Animal Sciences (Online) |
Texto Completo: | https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35378 |
Resumo: | The data set for estimation of genetic and phenotypic parameters of reproductive traits in Kordi sheep were collected from 1996 to 2013. The reproductive traits included age at first lambing (AFL), number of lambs born (NLB/EL) and weaned (NLW/EL) per ewe in each lambing, total weight of lambs born (TWLB/EL) and weaned (TWLW/EL) per ewe in each lambing, total number of lambs born (TNLB) and weaned (TNLW) per ewe, total weight of lambs born (TWLB) and weaned (TWLW) per ewe. The genetic parameters were estimated through restricted maximum likelihood method using WOMBAT. The effects of environmental factors (year of lambing, type of birth, maternal age at lambing) on all reproductive traits were significant (p < 0.01). Direct heritability, maternal heritability and the ratio of maternal permanent environmental variance to phenotypic variance for reproductive traits were estimated in the range from 0.07 to 0.18, 0.03 to 0.08 and 0.01 to 0.03, respectively. Genetic and phenotypic correlations between reproductive traits were estimated to be positive and within the range of 0.09 to 0.96 and 0.02 to 0.29, respectively. The results suggest that selection based on number of lambs born per ewe can be more effective than other traits in improving reproductive performance in Kordi ewes. |
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Acta Scientiarum. Animal Sciences (Online) |
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Estimates of genetic and phenotypic parameters for reproductive traits in Iranian native Kordi sheepheritabilitydirect and maternal effectgenetic and phenotypic correlationanimal models.The data set for estimation of genetic and phenotypic parameters of reproductive traits in Kordi sheep were collected from 1996 to 2013. The reproductive traits included age at first lambing (AFL), number of lambs born (NLB/EL) and weaned (NLW/EL) per ewe in each lambing, total weight of lambs born (TWLB/EL) and weaned (TWLW/EL) per ewe in each lambing, total number of lambs born (TNLB) and weaned (TNLW) per ewe, total weight of lambs born (TWLB) and weaned (TWLW) per ewe. The genetic parameters were estimated through restricted maximum likelihood method using WOMBAT. The effects of environmental factors (year of lambing, type of birth, maternal age at lambing) on all reproductive traits were significant (p < 0.01). Direct heritability, maternal heritability and the ratio of maternal permanent environmental variance to phenotypic variance for reproductive traits were estimated in the range from 0.07 to 0.18, 0.03 to 0.08 and 0.01 to 0.03, respectively. Genetic and phenotypic correlations between reproductive traits were estimated to be positive and within the range of 0.09 to 0.96 and 0.02 to 0.29, respectively. The results suggest that selection based on number of lambs born per ewe can be more effective than other traits in improving reproductive performance in Kordi ewes. Editora da Universidade Estadual de Maringá2017-07-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionfieldwork; data analysisapplication/pdfhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/3537810.4025/actascianimsci.v39i3.35378Acta Scientiarum. Animal Sciences; Vol 39 No 3 (2017); 323-328Acta Scientiarum. Animal Sciences; v. 39 n. 3 (2017); 323-3281807-86721806-2636reponame:Acta Scientiarum. Animal Sciences (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35378/pdf_1Copyright (c) 2017 Acta Scientiarum. Animal Sciencesinfo:eu-repo/semantics/openAccessSaghi, Davoud AliShahdadi, Ali Reza2022-02-17T21:50:04Zoai:periodicos.uem.br/ojs:article/35378Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSci/oaiactaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com1807-86721806-2636opendoar:2022-02-17T21:50:04Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Estimates of genetic and phenotypic parameters for reproductive traits in Iranian native Kordi sheep |
title |
Estimates of genetic and phenotypic parameters for reproductive traits in Iranian native Kordi sheep |
spellingShingle |
Estimates of genetic and phenotypic parameters for reproductive traits in Iranian native Kordi sheep Saghi, Davoud Ali heritability direct and maternal effect genetic and phenotypic correlation animal models. |
title_short |
Estimates of genetic and phenotypic parameters for reproductive traits in Iranian native Kordi sheep |
title_full |
Estimates of genetic and phenotypic parameters for reproductive traits in Iranian native Kordi sheep |
title_fullStr |
Estimates of genetic and phenotypic parameters for reproductive traits in Iranian native Kordi sheep |
title_full_unstemmed |
Estimates of genetic and phenotypic parameters for reproductive traits in Iranian native Kordi sheep |
title_sort |
Estimates of genetic and phenotypic parameters for reproductive traits in Iranian native Kordi sheep |
author |
Saghi, Davoud Ali |
author_facet |
Saghi, Davoud Ali Shahdadi, Ali Reza |
author_role |
author |
author2 |
Shahdadi, Ali Reza |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Saghi, Davoud Ali Shahdadi, Ali Reza |
dc.subject.por.fl_str_mv |
heritability direct and maternal effect genetic and phenotypic correlation animal models. |
topic |
heritability direct and maternal effect genetic and phenotypic correlation animal models. |
description |
The data set for estimation of genetic and phenotypic parameters of reproductive traits in Kordi sheep were collected from 1996 to 2013. The reproductive traits included age at first lambing (AFL), number of lambs born (NLB/EL) and weaned (NLW/EL) per ewe in each lambing, total weight of lambs born (TWLB/EL) and weaned (TWLW/EL) per ewe in each lambing, total number of lambs born (TNLB) and weaned (TNLW) per ewe, total weight of lambs born (TWLB) and weaned (TWLW) per ewe. The genetic parameters were estimated through restricted maximum likelihood method using WOMBAT. The effects of environmental factors (year of lambing, type of birth, maternal age at lambing) on all reproductive traits were significant (p < 0.01). Direct heritability, maternal heritability and the ratio of maternal permanent environmental variance to phenotypic variance for reproductive traits were estimated in the range from 0.07 to 0.18, 0.03 to 0.08 and 0.01 to 0.03, respectively. Genetic and phenotypic correlations between reproductive traits were estimated to be positive and within the range of 0.09 to 0.96 and 0.02 to 0.29, respectively. The results suggest that selection based on number of lambs born per ewe can be more effective than other traits in improving reproductive performance in Kordi ewes. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-07-14 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion fieldwork; data analysis |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35378 10.4025/actascianimsci.v39i3.35378 |
url |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35378 |
identifier_str_mv |
10.4025/actascianimsci.v39i3.35378 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/35378/pdf_1 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2017 Acta Scientiarum. Animal Sciences info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2017 Acta Scientiarum. Animal Sciences |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Editora da Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Editora da Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Animal Sciences; Vol 39 No 3 (2017); 323-328 Acta Scientiarum. Animal Sciences; v. 39 n. 3 (2017); 323-328 1807-8672 1806-2636 reponame:Acta Scientiarum. Animal Sciences (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum. Animal Sciences (Online) |
collection |
Acta Scientiarum. Animal Sciences (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com |
_version_ |
1799315361865138176 |