Genetic analysis of oocyte and embryo production traits in Guzerá breed donors and their associations with age at first calving.
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1061463 |
Resumo: | Abstract: The objective of this study was to estimate variance components for oocyte and embryo production traits in Guzerá breed female donors, and investigate their associations with age at first calving (AFC). The traits analyzed were the number of viable oocytes (NOV), the number of grade I oocytes (NGI), the number of cleaved embryos (NCLV), and viable embryos produced (NEMB), and the percentages of viable oocytes (POV), grade I oocytes (PGI), cleaved embryos (PCLV), and viable embryos (PEMB). Data were obtained from 5173 ovary puncture and in vitro fertilization (IVF) sessions using 1080 Guzerá female donors of different ages, occurred from March 2005 to July 2013. Variables were log-transformed (logeX+1) prior to analysis. (Co)variance components were estimated by restricted maximum likelihood (REML), using one- and two-trait animal models. Permanent environment and IVF sire (father of the embryos) random effects were included. Estimated heritabilities for NOV, NGI, NCLV, NEMB, POV, PGI, PCLV, and PEMB were 0.19, 0.08, 0.16, 0.14, 0.04, 0.03, 0.01, and 0.07, respectively. Repeatabilities for count traits (NOV, NGI, NCLV, and NEMB) varied from 0.14 and 0.32, higher than estimated for percentage traits (POV, PGI, PCLV, and PEMB), which varied from 0.01 to 0.08. Selection for NOV may be more appropriate in breeding programs than selection for NEMB, because of its strong genetic correlation (0.68) with NEMB and its greater time- and cost-effectiveness. AFC was only weakly associated with the oocyte and embryo production traits, which indicates that there would be no effect on AFC when selecting for these traits. |
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Genetic analysis of oocyte and embryo production traits in Guzerá breed donors and their associations with age at first calving.Bivariate analysisGenetic parameterOvum pick-upPermanent environmentZebu cattlein vitro fertilizationAbstract: The objective of this study was to estimate variance components for oocyte and embryo production traits in Guzerá breed female donors, and investigate their associations with age at first calving (AFC). The traits analyzed were the number of viable oocytes (NOV), the number of grade I oocytes (NGI), the number of cleaved embryos (NCLV), and viable embryos produced (NEMB), and the percentages of viable oocytes (POV), grade I oocytes (PGI), cleaved embryos (PCLV), and viable embryos (PEMB). Data were obtained from 5173 ovary puncture and in vitro fertilization (IVF) sessions using 1080 Guzerá female donors of different ages, occurred from March 2005 to July 2013. Variables were log-transformed (logeX+1) prior to analysis. (Co)variance components were estimated by restricted maximum likelihood (REML), using one- and two-trait animal models. Permanent environment and IVF sire (father of the embryos) random effects were included. Estimated heritabilities for NOV, NGI, NCLV, NEMB, POV, PGI, PCLV, and PEMB were 0.19, 0.08, 0.16, 0.14, 0.04, 0.03, 0.01, and 0.07, respectively. Repeatabilities for count traits (NOV, NGI, NCLV, and NEMB) varied from 0.14 and 0.32, higher than estimated for percentage traits (POV, PGI, PCLV, and PEMB), which varied from 0.01 to 0.08. Selection for NOV may be more appropriate in breeding programs than selection for NEMB, because of its strong genetic correlation (0.68) with NEMB and its greater time- and cost-effectiveness. AFC was only weakly associated with the oocyte and embryo production traits, which indicates that there would be no effect on AFC when selecting for these traits.B. C. Perez; MARIA GABRIELA CAMPOLINA D PEIXOTO, CNPGL; FRANK ANGELO TOMITA BRUNELI, CNPGL; P.V.B. Ramos; J. C. C. Balieiro.PEREZ, B. C.PEIXOTO, M. G. C. D.BRUNELI, F. A. T.RAMOS, P. V. B.BALIEIRO, J. C. C.2017-01-23T11:11:11Z2017-01-23T11:11:11Z2017-01-2320162017-01-23T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article9 p.Genetics and Molecular Research, v. 15, n. 2, 2016.http://www.alice.cnptia.embrapa.br/alice/handle/doc/1061463porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-16T04:04:43Zoai:www.alice.cnptia.embrapa.br:doc/1061463Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-16T04:04:43falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T04:04:43Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Genetic analysis of oocyte and embryo production traits in Guzerá breed donors and their associations with age at first calving. |
title |
Genetic analysis of oocyte and embryo production traits in Guzerá breed donors and their associations with age at first calving. |
spellingShingle |
Genetic analysis of oocyte and embryo production traits in Guzerá breed donors and their associations with age at first calving. PEREZ, B. C. Bivariate analysis Genetic parameter Ovum pick-up Permanent environment Zebu cattle in vitro fertilization |
title_short |
Genetic analysis of oocyte and embryo production traits in Guzerá breed donors and their associations with age at first calving. |
title_full |
Genetic analysis of oocyte and embryo production traits in Guzerá breed donors and their associations with age at first calving. |
title_fullStr |
Genetic analysis of oocyte and embryo production traits in Guzerá breed donors and their associations with age at first calving. |
title_full_unstemmed |
Genetic analysis of oocyte and embryo production traits in Guzerá breed donors and their associations with age at first calving. |
title_sort |
Genetic analysis of oocyte and embryo production traits in Guzerá breed donors and their associations with age at first calving. |
author |
PEREZ, B. C. |
author_facet |
PEREZ, B. C. PEIXOTO, M. G. C. D. BRUNELI, F. A. T. RAMOS, P. V. B. BALIEIRO, J. C. C. |
author_role |
author |
author2 |
PEIXOTO, M. G. C. D. BRUNELI, F. A. T. RAMOS, P. V. B. BALIEIRO, J. C. C. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
B. C. Perez; MARIA GABRIELA CAMPOLINA D PEIXOTO, CNPGL; FRANK ANGELO TOMITA BRUNELI, CNPGL; P.V.B. Ramos; J. C. C. Balieiro. |
dc.contributor.author.fl_str_mv |
PEREZ, B. C. PEIXOTO, M. G. C. D. BRUNELI, F. A. T. RAMOS, P. V. B. BALIEIRO, J. C. C. |
dc.subject.por.fl_str_mv |
Bivariate analysis Genetic parameter Ovum pick-up Permanent environment Zebu cattle in vitro fertilization |
topic |
Bivariate analysis Genetic parameter Ovum pick-up Permanent environment Zebu cattle in vitro fertilization |
description |
Abstract: The objective of this study was to estimate variance components for oocyte and embryo production traits in Guzerá breed female donors, and investigate their associations with age at first calving (AFC). The traits analyzed were the number of viable oocytes (NOV), the number of grade I oocytes (NGI), the number of cleaved embryos (NCLV), and viable embryos produced (NEMB), and the percentages of viable oocytes (POV), grade I oocytes (PGI), cleaved embryos (PCLV), and viable embryos (PEMB). Data were obtained from 5173 ovary puncture and in vitro fertilization (IVF) sessions using 1080 Guzerá female donors of different ages, occurred from March 2005 to July 2013. Variables were log-transformed (logeX+1) prior to analysis. (Co)variance components were estimated by restricted maximum likelihood (REML), using one- and two-trait animal models. Permanent environment and IVF sire (father of the embryos) random effects were included. Estimated heritabilities for NOV, NGI, NCLV, NEMB, POV, PGI, PCLV, and PEMB were 0.19, 0.08, 0.16, 0.14, 0.04, 0.03, 0.01, and 0.07, respectively. Repeatabilities for count traits (NOV, NGI, NCLV, and NEMB) varied from 0.14 and 0.32, higher than estimated for percentage traits (POV, PGI, PCLV, and PEMB), which varied from 0.01 to 0.08. Selection for NOV may be more appropriate in breeding programs than selection for NEMB, because of its strong genetic correlation (0.68) with NEMB and its greater time- and cost-effectiveness. AFC was only weakly associated with the oocyte and embryo production traits, which indicates that there would be no effect on AFC when selecting for these traits. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016 2017-01-23T11:11:11Z 2017-01-23T11:11:11Z 2017-01-23 2017-01-23T11:11:11Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Genetics and Molecular Research, v. 15, n. 2, 2016. http://www.alice.cnptia.embrapa.br/alice/handle/doc/1061463 |
identifier_str_mv |
Genetics and Molecular Research, v. 15, n. 2, 2016. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/1061463 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
9 p. |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503431248936960 |