Genetic associations between scrotal circumference and female reproductive traits in nelore cattle
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.2527/jas.2014-8817 http://hdl.handle.net/11449/173017 |
Resumo: | The objective of this study was to estimate genetic associations between scrotal circumference obtained at 12 (SC12; mean of 21.46 ± 2.74 cm), 15 (SC15; mean of 25.31 ± 3.19 cm), and 18 mo of age (SC18; mean of 26.77 ± 2.95 cm) and reproductive traits measured directly in heifers (age at first calving [AFC]: mean of 1,062.06 ± 114.79 d; heifer pregnancy at 16 mo of age [HP]: mean of 15.4 ± 0.36%; and subsequent rebreeding of primiparous heifers [HR]: mean of 27.1 ± 0.44%) using Bayesian inference to evaluate the possible inclusion of these traits as selection criteria in beef cattle breeding programs. Genetic gains comparisons were also estimated. A total of 53,683 data of Nelore animals born between 1990 and 2006, obtained from the livestock archive of Agropecuária Jacarezinho Ltda. (Valparaíso, São Paulo, Brazil), were analyzed. Two-trait analysis provided heritability estimates of 0.35 ± 0.08, 0.40 ± 0.04, 0.37 ± 0.03, 0.21 ± 0.01, 0.55 ± 0.03, and 0.17 ± 0.03 for SC12, SC15, SC18, AFC, HP, and HR, respectively. The genetic correlations between scrotal circumference and AFC, HP, and HR were –0.42 ± 0.12, 0.43 ± 0.13, and –0.13 ± 0.17, respectively, for SC12; –0.25 ± 0.07, 0.26 ± 0.07, and –0.11 ± 0.10, respectively, for SC15; and –0.22 ± 0.06, 0.39 ± 0.06, and 0.11 ± 0.09, respectively, for SC18. The direct selection response for HP was 0.12%, but when HP is indirectly selected based on the scrotal circumferences, the gains on these correlated responses were higher (0.16, 0.16, and 0.22%) for selection based on SC12, SC15, and SC18, respectively. These findings suggest that the selection of animals for larger scrotal circumference, particularly at 12 mo of age, should result in higher rates of HP and younger AFC of Nelore females. |
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Genetic associations between scrotal circumference and female reproductive traits in nelore cattleAge at first calvingBayesian inferenceBeef cattleHeifer pregnancyHeifer rebreedingThe objective of this study was to estimate genetic associations between scrotal circumference obtained at 12 (SC12; mean of 21.46 ± 2.74 cm), 15 (SC15; mean of 25.31 ± 3.19 cm), and 18 mo of age (SC18; mean of 26.77 ± 2.95 cm) and reproductive traits measured directly in heifers (age at first calving [AFC]: mean of 1,062.06 ± 114.79 d; heifer pregnancy at 16 mo of age [HP]: mean of 15.4 ± 0.36%; and subsequent rebreeding of primiparous heifers [HR]: mean of 27.1 ± 0.44%) using Bayesian inference to evaluate the possible inclusion of these traits as selection criteria in beef cattle breeding programs. Genetic gains comparisons were also estimated. A total of 53,683 data of Nelore animals born between 1990 and 2006, obtained from the livestock archive of Agropecuária Jacarezinho Ltda. (Valparaíso, São Paulo, Brazil), were analyzed. Two-trait analysis provided heritability estimates of 0.35 ± 0.08, 0.40 ± 0.04, 0.37 ± 0.03, 0.21 ± 0.01, 0.55 ± 0.03, and 0.17 ± 0.03 for SC12, SC15, SC18, AFC, HP, and HR, respectively. The genetic correlations between scrotal circumference and AFC, HP, and HR were –0.42 ± 0.12, 0.43 ± 0.13, and –0.13 ± 0.17, respectively, for SC12; –0.25 ± 0.07, 0.26 ± 0.07, and –0.11 ± 0.10, respectively, for SC15; and –0.22 ± 0.06, 0.39 ± 0.06, and 0.11 ± 0.09, respectively, for SC18. The direct selection response for HP was 0.12%, but when HP is indirectly selected based on the scrotal circumferences, the gains on these correlated responses were higher (0.16, 0.16, and 0.22%) for selection based on SC12, SC15, and SC18, respectively. These findings suggest that the selection of animals for larger scrotal circumference, particularly at 12 mo of age, should result in higher rates of HP and younger AFC of Nelore females.Department of Animal Science São Paulo State University (UNESP), Campus Jaboticabal Road Professor Paulo Donato Catellane, km 5, RuralDepartment of Animal Science Pelotas Federal University (UFPel), Campus Capão do Leão Gomes Carneiro street, s/nDepartment of Animal Breeding and Nutrition Sao Paulo State University (UNESP), Campus Botucatu Bento Lopes street, s/n, Rubião Jr. districtDepartment of Animal Science São Paulo State University (UNESP), Campus Jaboticabal Road Professor Paulo Donato Catellane, km 5, RuralDepartment of Animal Breeding and Nutrition Sao Paulo State University (UNESP), Campus Botucatu Bento Lopes street, s/n, Rubião Jr. districtUniversidade Estadual Paulista (Unesp)Universidade Federal de Pernambuco (UFPE)Terakado, A. P.N. [UNESP]Boligon, A. A.Baldi, F. [UNESP]Silva, J. A.V. [UNESP]Albuquerque, L. G. [UNESP]2018-12-11T17:03:08Z2018-12-11T17:03:08Z2015-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2706-2713http://dx.doi.org/10.2527/jas.2014-8817Journal of Animal Science, v. 93, n. 6, p. 2706-2713, 2015.1525-31630021-8812http://hdl.handle.net/11449/17301710.2527/jas.2014-88172-s2.0-84971421962Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Animal Science0,848info:eu-repo/semantics/openAccess2021-10-23T15:48:40Zoai:repositorio.unesp.br:11449/173017Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T15:48:40Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Genetic associations between scrotal circumference and female reproductive traits in nelore cattle |
title |
Genetic associations between scrotal circumference and female reproductive traits in nelore cattle |
spellingShingle |
Genetic associations between scrotal circumference and female reproductive traits in nelore cattle Terakado, A. P.N. [UNESP] Age at first calving Bayesian inference Beef cattle Heifer pregnancy Heifer rebreeding |
title_short |
Genetic associations between scrotal circumference and female reproductive traits in nelore cattle |
title_full |
Genetic associations between scrotal circumference and female reproductive traits in nelore cattle |
title_fullStr |
Genetic associations between scrotal circumference and female reproductive traits in nelore cattle |
title_full_unstemmed |
Genetic associations between scrotal circumference and female reproductive traits in nelore cattle |
title_sort |
Genetic associations between scrotal circumference and female reproductive traits in nelore cattle |
author |
Terakado, A. P.N. [UNESP] |
author_facet |
Terakado, A. P.N. [UNESP] Boligon, A. A. Baldi, F. [UNESP] Silva, J. A.V. [UNESP] Albuquerque, L. G. [UNESP] |
author_role |
author |
author2 |
Boligon, A. A. Baldi, F. [UNESP] Silva, J. A.V. [UNESP] Albuquerque, L. G. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de Pernambuco (UFPE) |
dc.contributor.author.fl_str_mv |
Terakado, A. P.N. [UNESP] Boligon, A. A. Baldi, F. [UNESP] Silva, J. A.V. [UNESP] Albuquerque, L. G. [UNESP] |
dc.subject.por.fl_str_mv |
Age at first calving Bayesian inference Beef cattle Heifer pregnancy Heifer rebreeding |
topic |
Age at first calving Bayesian inference Beef cattle Heifer pregnancy Heifer rebreeding |
description |
The objective of this study was to estimate genetic associations between scrotal circumference obtained at 12 (SC12; mean of 21.46 ± 2.74 cm), 15 (SC15; mean of 25.31 ± 3.19 cm), and 18 mo of age (SC18; mean of 26.77 ± 2.95 cm) and reproductive traits measured directly in heifers (age at first calving [AFC]: mean of 1,062.06 ± 114.79 d; heifer pregnancy at 16 mo of age [HP]: mean of 15.4 ± 0.36%; and subsequent rebreeding of primiparous heifers [HR]: mean of 27.1 ± 0.44%) using Bayesian inference to evaluate the possible inclusion of these traits as selection criteria in beef cattle breeding programs. Genetic gains comparisons were also estimated. A total of 53,683 data of Nelore animals born between 1990 and 2006, obtained from the livestock archive of Agropecuária Jacarezinho Ltda. (Valparaíso, São Paulo, Brazil), were analyzed. Two-trait analysis provided heritability estimates of 0.35 ± 0.08, 0.40 ± 0.04, 0.37 ± 0.03, 0.21 ± 0.01, 0.55 ± 0.03, and 0.17 ± 0.03 for SC12, SC15, SC18, AFC, HP, and HR, respectively. The genetic correlations between scrotal circumference and AFC, HP, and HR were –0.42 ± 0.12, 0.43 ± 0.13, and –0.13 ± 0.17, respectively, for SC12; –0.25 ± 0.07, 0.26 ± 0.07, and –0.11 ± 0.10, respectively, for SC15; and –0.22 ± 0.06, 0.39 ± 0.06, and 0.11 ± 0.09, respectively, for SC18. The direct selection response for HP was 0.12%, but when HP is indirectly selected based on the scrotal circumferences, the gains on these correlated responses were higher (0.16, 0.16, and 0.22%) for selection based on SC12, SC15, and SC18, respectively. These findings suggest that the selection of animals for larger scrotal circumference, particularly at 12 mo of age, should result in higher rates of HP and younger AFC of Nelore females. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-06-01 2018-12-11T17:03:08Z 2018-12-11T17:03:08Z |
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.uri.fl_str_mv |
http://dx.doi.org/10.2527/jas.2014-8817 Journal of Animal Science, v. 93, n. 6, p. 2706-2713, 2015. 1525-3163 0021-8812 http://hdl.handle.net/11449/173017 10.2527/jas.2014-8817 2-s2.0-84971421962 |
url |
http://dx.doi.org/10.2527/jas.2014-8817 http://hdl.handle.net/11449/173017 |
identifier_str_mv |
Journal of Animal Science, v. 93, n. 6, p. 2706-2713, 2015. 1525-3163 0021-8812 10.2527/jas.2014-8817 2-s2.0-84971421962 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Animal Science 0,848 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
2706-2713 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1797789370252525568 |