Genetic parameters and trends for reproductive traits in Blanco Orejinegro cattle from Colombia
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/41670 |
Resumo: | The Colombian creole cattle breed Blanco Orejinegro (BON) is an important zoogenetic resource, but there is little knowledge about the genetic parameters and trends of its reproductive traits. Therefore, the aim of this study was to estimate parameters for the reproductive traits calving interval (CI), age at first calving (AFC), gestation duration (GD) and genetic trends for CI in the BON breed. Genealogy information from 7,799 animals was used, and employing the MTDFREML program, the components of the variance, heritability (h2), repeatability (rep), and estimated breeding values (EBV) for CI (n=3308), AFC (n=729), and GD (n=306) were estimated, in addition to the inbreeding coefficient (F) of the population. Genetic trends were established through linear regression using R software. Finally, the animals were classified as inbred (F>0) and noninbred (F=0), and the effect of inbreeding on reproductive performance was established through a generalized linear model using the R program. An average F value of 4.41%±0.06 was observed. The h2 for CI was 0.11±0.03 with a rep of 0.15±0.04; for AFC, h2 was 0.00±0.05; and for GD, h2 was 0.00±0.08. The genetic trend for CI was -0.01 days/year. Finally, for CI, inbreeding depression was evident; this trait increased when inbreeding increased. These results indicate an important environmental influence on reproductive traits. The heritability estimate for CI suggests that little genetic progress could be achieved through selection. The evidence of inbreeding depression raises the need to control inbreeding to conserve this genetic resource. |
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Semina. Ciências Agrárias (Online) |
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Genetic parameters and trends for reproductive traits in Blanco Orejinegro cattle from ColombiaParâmetros e tendências genéticas para características reprodutivas no gado Blanco Orejinegro da ColômbiaConsanguinityHeritabilityInbreeding depressionGenetic evaluation.ConsanguinidadeHerdabilidadeDepressão endogâmicaAvaliação genética.The Colombian creole cattle breed Blanco Orejinegro (BON) is an important zoogenetic resource, but there is little knowledge about the genetic parameters and trends of its reproductive traits. Therefore, the aim of this study was to estimate parameters for the reproductive traits calving interval (CI), age at first calving (AFC), gestation duration (GD) and genetic trends for CI in the BON breed. Genealogy information from 7,799 animals was used, and employing the MTDFREML program, the components of the variance, heritability (h2), repeatability (rep), and estimated breeding values (EBV) for CI (n=3308), AFC (n=729), and GD (n=306) were estimated, in addition to the inbreeding coefficient (F) of the population. Genetic trends were established through linear regression using R software. Finally, the animals were classified as inbred (F>0) and noninbred (F=0), and the effect of inbreeding on reproductive performance was established through a generalized linear model using the R program. An average F value of 4.41%±0.06 was observed. The h2 for CI was 0.11±0.03 with a rep of 0.15±0.04; for AFC, h2 was 0.00±0.05; and for GD, h2 was 0.00±0.08. The genetic trend for CI was -0.01 days/year. Finally, for CI, inbreeding depression was evident; this trait increased when inbreeding increased. These results indicate an important environmental influence on reproductive traits. The heritability estimate for CI suggests that little genetic progress could be achieved through selection. The evidence of inbreeding depression raises the need to control inbreeding to conserve this genetic resource.O gado crioulo colombiano Blanco Orejinegro (BON) é um importante recurso zoogenético, mas ainda há desconhecimento sobre os parâmetros e tendências genéticas das características reprodutivas dessa raça. Portanto, o objetivo deste estúdio foi estimar parâmetros e tendências genéticas para características reprodutivas intervalo de partos (IDP), idade ao primeiro parto (IPP) e duração da gestação (DG) na raça BON. A informação da genealogia de 7,799 animais foi usada. Utilizando o programa MTDFREML foram estimados os componentes de variância, herdabilidade (h2), repetibilidade (rep) e valores genéticos (VGE), para IDP (n=3308), IPP (n=729) e DG (n=306), além do coeficiente de endogamia (F) na população. As tendências genéticas foram determinadas por regressão linear usando o software R. Finalmente, os animais foram classificados como endogâmicos (F > 0) e não endogâmicos (F=0) e o efeito da endogamia no desempenho reprodutivo foi determinado usando um modelo linear generalizado usando R. Observou-se um F médio de 4,41%+0,06. A h2 para IDP foi 0,11±0,03 com uma repetibilidade de 0,15±0,04; para IPP a h2 foi 0,00 ± 0,05; e para DG a h2 foi 0,00 ± 0,08. A tendência genética para IDP foi -0,01 dias/ano. Finalmente, para o IDP, a depressão por endogamia foi evidente, aumentando o IDP com o aumento da endogamia. Os resultados indicam uma importante influência ambiental nas características reprodutivas. A herdabilidade estimada para o IDP sugere que pouco ganho genético pode ser alcançado através da seleção, embora a depressão endogâmica evidencie a necessidade de controlar a consanguinidade para conservar o recurso genético.UEL2021-05-20info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioncuantitative geneticapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/4167010.5433/1679-0359.2021v42n4p2523Semina: Ciências Agrárias; Vol. 42 No. 4 (2021); 2523-2538Semina: Ciências Agrárias; v. 42 n. 4 (2021); 2523-25381679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/41670/29674Copyright (c) 2021 Semina: Ciências Agráriashttp://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessCaivio-Nasner, Sindy LilianaLópez-Herrera, AlbeiroGonzález-Herrera, Luis GabrielRincón Flórez, Juan Carlos2022-09-30T14:42:24Zoai:ojs.pkp.sfu.ca:article/41670Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-09-30T14:42:24Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Genetic parameters and trends for reproductive traits in Blanco Orejinegro cattle from Colombia Parâmetros e tendências genéticas para características reprodutivas no gado Blanco Orejinegro da Colômbia |
title |
Genetic parameters and trends for reproductive traits in Blanco Orejinegro cattle from Colombia |
spellingShingle |
Genetic parameters and trends for reproductive traits in Blanco Orejinegro cattle from Colombia Caivio-Nasner, Sindy Liliana Consanguinity Heritability Inbreeding depression Genetic evaluation. Consanguinidade Herdabilidade Depressão endogâmica Avaliação genética. |
title_short |
Genetic parameters and trends for reproductive traits in Blanco Orejinegro cattle from Colombia |
title_full |
Genetic parameters and trends for reproductive traits in Blanco Orejinegro cattle from Colombia |
title_fullStr |
Genetic parameters and trends for reproductive traits in Blanco Orejinegro cattle from Colombia |
title_full_unstemmed |
Genetic parameters and trends for reproductive traits in Blanco Orejinegro cattle from Colombia |
title_sort |
Genetic parameters and trends for reproductive traits in Blanco Orejinegro cattle from Colombia |
author |
Caivio-Nasner, Sindy Liliana |
author_facet |
Caivio-Nasner, Sindy Liliana López-Herrera, Albeiro González-Herrera, Luis Gabriel Rincón Flórez, Juan Carlos |
author_role |
author |
author2 |
López-Herrera, Albeiro González-Herrera, Luis Gabriel Rincón Flórez, Juan Carlos |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Caivio-Nasner, Sindy Liliana López-Herrera, Albeiro González-Herrera, Luis Gabriel Rincón Flórez, Juan Carlos |
dc.subject.por.fl_str_mv |
Consanguinity Heritability Inbreeding depression Genetic evaluation. Consanguinidade Herdabilidade Depressão endogâmica Avaliação genética. |
topic |
Consanguinity Heritability Inbreeding depression Genetic evaluation. Consanguinidade Herdabilidade Depressão endogâmica Avaliação genética. |
description |
The Colombian creole cattle breed Blanco Orejinegro (BON) is an important zoogenetic resource, but there is little knowledge about the genetic parameters and trends of its reproductive traits. Therefore, the aim of this study was to estimate parameters for the reproductive traits calving interval (CI), age at first calving (AFC), gestation duration (GD) and genetic trends for CI in the BON breed. Genealogy information from 7,799 animals was used, and employing the MTDFREML program, the components of the variance, heritability (h2), repeatability (rep), and estimated breeding values (EBV) for CI (n=3308), AFC (n=729), and GD (n=306) were estimated, in addition to the inbreeding coefficient (F) of the population. Genetic trends were established through linear regression using R software. Finally, the animals were classified as inbred (F>0) and noninbred (F=0), and the effect of inbreeding on reproductive performance was established through a generalized linear model using the R program. An average F value of 4.41%±0.06 was observed. The h2 for CI was 0.11±0.03 with a rep of 0.15±0.04; for AFC, h2 was 0.00±0.05; and for GD, h2 was 0.00±0.08. The genetic trend for CI was -0.01 days/year. Finally, for CI, inbreeding depression was evident; this trait increased when inbreeding increased. These results indicate an important environmental influence on reproductive traits. The heritability estimate for CI suggests that little genetic progress could be achieved through selection. The evidence of inbreeding depression raises the need to control inbreeding to conserve this genetic resource. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-05-20 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion cuantitative genetic |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/41670 10.5433/1679-0359.2021v42n4p2523 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/41670 |
identifier_str_mv |
10.5433/1679-0359.2021v42n4p2523 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/41670/29674 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2021 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2021 Semina: Ciências Agrárias http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 42 No. 4 (2021); 2523-2538 Semina: Ciências Agrárias; v. 42 n. 4 (2021); 2523-2538 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306084692787200 |