Selection indexes for Nellore production system in the Brazilian Pantanal
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | https://locus.ufv.br//handle/123456789/30317 https://doi.org/10.37496/rbz5020200264 |
Resumo: | The objective was to develop selection indexes for Nellore cattle raised in full-cycle production system in the Brazilian Pantanal. The resulting offspring are retained as replacements or sold at two years of age. Preliminary analyses explored effects of scale on economic values (EV). However, given the available data, these effects were very small. Presented herein are results from a simulated system consisting of 5,000 cows with all animals maintained on pasture as is typical in Pantanal. The EV were determined by approximating the partial derivatives of the profit function, changing one trait at a time, by one unit, while keeping the other traits constant. Traits in the breeding objective were mature cow weight, direct and maternal weaning weight, postweaning average daily gain, subcutaneous fat depth, longissimus muscle area, and stayability. Economic values were calculated on the basis of number of animals (per head), number of animal units, and arroba of carcasss weight. Regardless of the basis, maternal weaning weight and subcutaneous fat depth made negligible contributions to the breeding objective. Proportions of variation in the breeding objectives (per head, per animal unit, per arroba) explained by cow weight, direct weaning weight, postweaning average daily gain, stayability, and longissimus muscle area were: 13, 13, 17; 6, 1, 5; 3, 3, 4; 67, 67, 61; and 11, 17, 13, respectively. These indexes may aid Nellore breeders in their selection decisions, thus facilitating the genetic progress and increased productivity and profitability of Pantanal herds. |
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Portes, Juliana VarchakiMenezes, Gilberto Romeiro de OliveiraSilva, Luiz Otávio Campos daMacNeil, Michael DAbreu, Urbano Gomes Pinto deLacerda, Viviane Vasconcelos de2022-12-20T18:25:00Z2022-12-20T18:25:00Z2021-08-12Portes, J. V.; Menezes, G. R. O.; Silva, L. O. C.; MacNeil, M. D.; Abreu, U. G. P.; Lacerda, V. V. and Braccini Neto, J. 2021. Selection indexes for Nellore production system in the Brazilian Pantanal. Revista Brasileira de Zootecnia 50:e202002641806-9290https://locus.ufv.br//handle/123456789/30317https://doi.org/10.37496/rbz5020200264The objective was to develop selection indexes for Nellore cattle raised in full-cycle production system in the Brazilian Pantanal. The resulting offspring are retained as replacements or sold at two years of age. Preliminary analyses explored effects of scale on economic values (EV). However, given the available data, these effects were very small. Presented herein are results from a simulated system consisting of 5,000 cows with all animals maintained on pasture as is typical in Pantanal. The EV were determined by approximating the partial derivatives of the profit function, changing one trait at a time, by one unit, while keeping the other traits constant. Traits in the breeding objective were mature cow weight, direct and maternal weaning weight, postweaning average daily gain, subcutaneous fat depth, longissimus muscle area, and stayability. Economic values were calculated on the basis of number of animals (per head), number of animal units, and arroba of carcasss weight. Regardless of the basis, maternal weaning weight and subcutaneous fat depth made negligible contributions to the breeding objective. Proportions of variation in the breeding objectives (per head, per animal unit, per arroba) explained by cow weight, direct weaning weight, postweaning average daily gain, stayability, and longissimus muscle area were: 13, 13, 17; 6, 1, 5; 3, 3, 4; 67, 67, 61; and 11, 17, 13, respectively. These indexes may aid Nellore breeders in their selection decisions, thus facilitating the genetic progress and increased productivity and profitability of Pantanal herds.engBrazilian Journal of Animal ScienceR. Bras. Zootec., 50:e20200264, 2021Creative Commons Attribution Licenseinfo:eu-repo/semantics/openAccessbeef cattlebioeconomic modelbreeding objectivesgenetic gainselectionSelection indexes for Nellore production system in the Brazilian Pantanalinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlereponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINAL1806-9290-rbz-50-e20200264.pdf1806-9290-rbz-50-e20200264.pdfartigoapplication/pdf355768https://locus.ufv.br//bitstream/123456789/30317/1/1806-9290-rbz-50-e20200264.pdf7fb239963c881c5e915f0471ee948f44MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/30317/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52123456789/303172022-12-20 15:25:00.395oai:locus.ufv.br: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Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452022-12-20T18:25LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.en.fl_str_mv |
Selection indexes for Nellore production system in the Brazilian Pantanal |
title |
Selection indexes for Nellore production system in the Brazilian Pantanal |
spellingShingle |
Selection indexes for Nellore production system in the Brazilian Pantanal Portes, Juliana Varchaki beef cattle bioeconomic model breeding objectives genetic gain selection |
title_short |
Selection indexes for Nellore production system in the Brazilian Pantanal |
title_full |
Selection indexes for Nellore production system in the Brazilian Pantanal |
title_fullStr |
Selection indexes for Nellore production system in the Brazilian Pantanal |
title_full_unstemmed |
Selection indexes for Nellore production system in the Brazilian Pantanal |
title_sort |
Selection indexes for Nellore production system in the Brazilian Pantanal |
author |
Portes, Juliana Varchaki |
author_facet |
Portes, Juliana Varchaki Menezes, Gilberto Romeiro de Oliveira Silva, Luiz Otávio Campos da MacNeil, Michael D Abreu, Urbano Gomes Pinto de Lacerda, Viviane Vasconcelos de |
author_role |
author |
author2 |
Menezes, Gilberto Romeiro de Oliveira Silva, Luiz Otávio Campos da MacNeil, Michael D Abreu, Urbano Gomes Pinto de Lacerda, Viviane Vasconcelos de |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Portes, Juliana Varchaki Menezes, Gilberto Romeiro de Oliveira Silva, Luiz Otávio Campos da MacNeil, Michael D Abreu, Urbano Gomes Pinto de Lacerda, Viviane Vasconcelos de |
dc.subject.eng.fl_str_mv |
beef cattle bioeconomic model breeding objectives genetic gain selection |
topic |
beef cattle bioeconomic model breeding objectives genetic gain selection |
description |
The objective was to develop selection indexes for Nellore cattle raised in full-cycle production system in the Brazilian Pantanal. The resulting offspring are retained as replacements or sold at two years of age. Preliminary analyses explored effects of scale on economic values (EV). However, given the available data, these effects were very small. Presented herein are results from a simulated system consisting of 5,000 cows with all animals maintained on pasture as is typical in Pantanal. The EV were determined by approximating the partial derivatives of the profit function, changing one trait at a time, by one unit, while keeping the other traits constant. Traits in the breeding objective were mature cow weight, direct and maternal weaning weight, postweaning average daily gain, subcutaneous fat depth, longissimus muscle area, and stayability. Economic values were calculated on the basis of number of animals (per head), number of animal units, and arroba of carcasss weight. Regardless of the basis, maternal weaning weight and subcutaneous fat depth made negligible contributions to the breeding objective. Proportions of variation in the breeding objectives (per head, per animal unit, per arroba) explained by cow weight, direct weaning weight, postweaning average daily gain, stayability, and longissimus muscle area were: 13, 13, 17; 6, 1, 5; 3, 3, 4; 67, 67, 61; and 11, 17, 13, respectively. These indexes may aid Nellore breeders in their selection decisions, thus facilitating the genetic progress and increased productivity and profitability of Pantanal herds. |
publishDate |
2021 |
dc.date.issued.fl_str_mv |
2021-08-12 |
dc.date.accessioned.fl_str_mv |
2022-12-20T18:25:00Z |
dc.date.available.fl_str_mv |
2022-12-20T18:25:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
Portes, J. V.; Menezes, G. R. O.; Silva, L. O. C.; MacNeil, M. D.; Abreu, U. G. P.; Lacerda, V. V. and Braccini Neto, J. 2021. Selection indexes for Nellore production system in the Brazilian Pantanal. Revista Brasileira de Zootecnia 50:e20200264 |
dc.identifier.uri.fl_str_mv |
https://locus.ufv.br//handle/123456789/30317 |
dc.identifier.issn.none.fl_str_mv |
1806-9290 |
dc.identifier.doi.pt-BR.fl_str_mv |
https://doi.org/10.37496/rbz5020200264 |
identifier_str_mv |
Portes, J. V.; Menezes, G. R. O.; Silva, L. O. C.; MacNeil, M. D.; Abreu, U. G. P.; Lacerda, V. V. and Braccini Neto, J. 2021. Selection indexes for Nellore production system in the Brazilian Pantanal. Revista Brasileira de Zootecnia 50:e20200264 1806-9290 |
url |
https://locus.ufv.br//handle/123456789/30317 https://doi.org/10.37496/rbz5020200264 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartofseries.pt-BR.fl_str_mv |
R. Bras. Zootec., 50:e20200264, 2021 |
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Creative Commons Attribution License info:eu-repo/semantics/openAccess |
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Creative Commons Attribution License |
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openAccess |
dc.publisher.none.fl_str_mv |
Brazilian Journal of Animal Science |
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Brazilian Journal of Animal Science |
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