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Different selection practices affect the environmental sensitivity of beef cattle
The objective of the present study was to evaluate the effects of different selection practices on the environmental sensitivity of reproductive and growth traits in males and females of three Nellore selection lines [control (NeC), selection (NeS), and traditional (NeT) lines]. Moreover, genetic tr...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8018670/ https://www.ncbi.nlm.nih.gov/pubmed/33798231 http://dx.doi.org/10.1371/journal.pone.0248186 |
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author | de Paula Freitas, Anielly Santana Júnior, Mário Luiz Schenkel, Flavio Schramm Mercadante, Maria Eugênia Zerlotti Cyrillo, Joslaine Noely dos Santos Goncalves de Paz, Claudia Cristina Paro |
author_facet | de Paula Freitas, Anielly Santana Júnior, Mário Luiz Schenkel, Flavio Schramm Mercadante, Maria Eugênia Zerlotti Cyrillo, Joslaine Noely dos Santos Goncalves de Paz, Claudia Cristina Paro |
author_sort | de Paula Freitas, Anielly |
collection | PubMed |
description | The objective of the present study was to evaluate the effects of different selection practices on the environmental sensitivity of reproductive and growth traits in males and females of three Nellore selection lines [control (NeC), selection (NeS), and traditional (NeT) lines]. Moreover, genetic trends for the intercept and slope were estimated for each line, and the possible reranking of sires was examined. A total of 8,757 records of selection weight (SW), 3,331 records of scrotal circumference (SC), and 2,311 records of days to first calving (DFC) from Nellore cattle born between 1981 and 2017 were analyzed. (Co)variance components and genetic parameters of all traits were estimated using a reaction norm model with Gibbs sampler. In all cattle lines, the mean heritability of the studied traits ranged from 0.39 to 0.75 for SW in both males and females, from 0.46 to 0.68 for SC, and from 0.06 to 0.57 for DFC along with the environmental descriptor. In all cattle lines, the genetic correlation coefficients between the intercept and slope ranged from 0.03 to 0.81 for SW, from -0.14 to 0.39 for SC, and from -0.87 to -0.42 for DFC. Genetic trends for the slope and proportion of plastic genotypes indicated that the NeS line was more responsive to environmental changes, whereas the NeC and NeT lines tended to respond more modestly. Reranking of sires was observed for all traits, specifically in the NeC and NeT lines, because of the weak correlation between the opposite extreme environments. In the NeS line, reranking of sires was observed for DFC alone. Our results indicate that the effects of genotype-environment interaction are important and should be considered in genetic evaluations of Nellore cattle. Moreover, different selection practices affected the environmental sensitivity of the Nellore selection lines tested in this study. |
format | Online Article Text |
id | pubmed-8018670 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-80186702021-04-13 Different selection practices affect the environmental sensitivity of beef cattle de Paula Freitas, Anielly Santana Júnior, Mário Luiz Schenkel, Flavio Schramm Mercadante, Maria Eugênia Zerlotti Cyrillo, Joslaine Noely dos Santos Goncalves de Paz, Claudia Cristina Paro PLoS One Research Article The objective of the present study was to evaluate the effects of different selection practices on the environmental sensitivity of reproductive and growth traits in males and females of three Nellore selection lines [control (NeC), selection (NeS), and traditional (NeT) lines]. Moreover, genetic trends for the intercept and slope were estimated for each line, and the possible reranking of sires was examined. A total of 8,757 records of selection weight (SW), 3,331 records of scrotal circumference (SC), and 2,311 records of days to first calving (DFC) from Nellore cattle born between 1981 and 2017 were analyzed. (Co)variance components and genetic parameters of all traits were estimated using a reaction norm model with Gibbs sampler. In all cattle lines, the mean heritability of the studied traits ranged from 0.39 to 0.75 for SW in both males and females, from 0.46 to 0.68 for SC, and from 0.06 to 0.57 for DFC along with the environmental descriptor. In all cattle lines, the genetic correlation coefficients between the intercept and slope ranged from 0.03 to 0.81 for SW, from -0.14 to 0.39 for SC, and from -0.87 to -0.42 for DFC. Genetic trends for the slope and proportion of plastic genotypes indicated that the NeS line was more responsive to environmental changes, whereas the NeC and NeT lines tended to respond more modestly. Reranking of sires was observed for all traits, specifically in the NeC and NeT lines, because of the weak correlation between the opposite extreme environments. In the NeS line, reranking of sires was observed for DFC alone. Our results indicate that the effects of genotype-environment interaction are important and should be considered in genetic evaluations of Nellore cattle. Moreover, different selection practices affected the environmental sensitivity of the Nellore selection lines tested in this study. Public Library of Science 2021-04-02 /pmc/articles/PMC8018670/ /pubmed/33798231 http://dx.doi.org/10.1371/journal.pone.0248186 Text en © 2021 de Paula Freitas et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article de Paula Freitas, Anielly Santana Júnior, Mário Luiz Schenkel, Flavio Schramm Mercadante, Maria Eugênia Zerlotti Cyrillo, Joslaine Noely dos Santos Goncalves de Paz, Claudia Cristina Paro Different selection practices affect the environmental sensitivity of beef cattle |
title | Different selection practices affect the environmental sensitivity of beef cattle |
title_full | Different selection practices affect the environmental sensitivity of beef cattle |
title_fullStr | Different selection practices affect the environmental sensitivity of beef cattle |
title_full_unstemmed | Different selection practices affect the environmental sensitivity of beef cattle |
title_short | Different selection practices affect the environmental sensitivity of beef cattle |
title_sort | different selection practices affect the environmental sensitivity of beef cattle |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8018670/ https://www.ncbi.nlm.nih.gov/pubmed/33798231 http://dx.doi.org/10.1371/journal.pone.0248186 |
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