Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation

Detalhes bibliográficos
Autor(a) principal: Nogueira, Ériklis
Data de Publicação: 2012
Outros Autores: Silva, Ailson Sebastião da, Amaral, Thaís Basso, Ítavo, Luís Carlos Vinhas, Dias, Alexandre Menezes, Mingoti, Gisele Zoccal [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S1516-35982012000900007
http://hdl.handle.net/11449/30876
Resumo: To verify the effects of energy supplementation and fat on follicular dynamics, metabolic profile and the production of oocytes, 15 young heifers (Bos taurus indicus) with an average age of 14 months and with an initial weight of 256.35 kg were assigned to two treatments according to weight and follicular population as evaluated by ultrasonography: in T1 (1.0 × M), animals received 100% of the energy requirements for maintenance; in T2 (1.7 × M), animals received 170% of the energy requirements for maintenance, achieved by the addition of 200 g of Megalac®. After a period of adaptation to the diet, the treatments, blood collection and follicular aspirations were started using a randomized design. The dry matter intake and weight gain were lower in the 1.0 × M group than in the 1.7 × M group. No differences were found in the plasma progesterone concentrations, albumin, glucose, urea or gonadotropin (FSH and LH) levels between the groups. The mean concentrations of cholesterol were higher in the 1.7 × M group. The total number of small (<4 mm) and medium follicles (4-8 mm) was not altered by the treatments, but the number of small follicles increased on days 1 and 2 of the estrous cycle, with higher values found in the 1.7 × M group. The average of the oocytes also increased (9.50±2.1 and 12.5±4.4 for the 1.0 × M and 1.7 × M groups, respectively). The rapid increase in the amount of energy offered in the diet changes the amount of follicles and oocytes available for follicular aspiration (OPU) in young heifers without changing their metabolic profile.
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spelling Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementationmetabolic profilenutrition and reproductionOPUTo verify the effects of energy supplementation and fat on follicular dynamics, metabolic profile and the production of oocytes, 15 young heifers (Bos taurus indicus) with an average age of 14 months and with an initial weight of 256.35 kg were assigned to two treatments according to weight and follicular population as evaluated by ultrasonography: in T1 (1.0 × M), animals received 100% of the energy requirements for maintenance; in T2 (1.7 × M), animals received 170% of the energy requirements for maintenance, achieved by the addition of 200 g of Megalac®. After a period of adaptation to the diet, the treatments, blood collection and follicular aspirations were started using a randomized design. The dry matter intake and weight gain were lower in the 1.0 × M group than in the 1.7 × M group. No differences were found in the plasma progesterone concentrations, albumin, glucose, urea or gonadotropin (FSH and LH) levels between the groups. The mean concentrations of cholesterol were higher in the 1.7 × M group. The total number of small (<4 mm) and medium follicles (4-8 mm) was not altered by the treatments, but the number of small follicles increased on days 1 and 2 of the estrous cycle, with higher values found in the 1.7 × M group. The average of the oocytes also increased (9.50±2.1 and 12.5±4.4 for the 1.0 × M and 1.7 × M groups, respectively). The rapid increase in the amount of energy offered in the diet changes the amount of follicles and oocytes available for follicular aspiration (OPU) in young heifers without changing their metabolic profile.Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) PANTANALGênesis Reprodução AnimalEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-CNPGCUCDB Programa de Pós-Graduação em BiotecnologiaUNESP Curso de Medicina VeterináriaUNESP Curso de Medicina VeterináriaSociedade Brasileira de ZootecniaEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)Gênesis Reprodução AnimalUCDB Programa de Pós-Graduação em BiotecnologiaUniversidade Estadual Paulista (Unesp)Nogueira, ÉriklisSilva, Ailson Sebastião daAmaral, Thaís BassoÍtavo, Luís Carlos VinhasDias, Alexandre MenezesMingoti, Gisele Zoccal [UNESP]2014-05-20T15:18:24Z2014-05-20T15:18:24Z2012-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2012-2017application/pdfhttp://dx.doi.org/10.1590/S1516-35982012000900007Revista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 41, n. 9, p. 2012-2017, 2012.1516-3598http://hdl.handle.net/11449/3087610.1590/S1516-35982012000900007S1516-35982012000900007WOS:000311562800007S1516-35982012000900007.pdf41919517643347660000-0002-3059-4458SciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Zootecnia0,337info:eu-repo/semantics/openAccess2024-09-04T19:15:39Zoai:repositorio.unesp.br:11449/30876Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462024-09-04T19:15:39Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation
title Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation
spellingShingle Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation
Nogueira, Ériklis
metabolic profile
nutrition and reproduction
OPU
title_short Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation
title_full Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation
title_fullStr Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation
title_full_unstemmed Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation
title_sort Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation
author Nogueira, Ériklis
author_facet Nogueira, Ériklis
Silva, Ailson Sebastião da
Amaral, Thaís Basso
Ítavo, Luís Carlos Vinhas
Dias, Alexandre Menezes
Mingoti, Gisele Zoccal [UNESP]
author_role author
author2 Silva, Ailson Sebastião da
Amaral, Thaís Basso
Ítavo, Luís Carlos Vinhas
Dias, Alexandre Menezes
Mingoti, Gisele Zoccal [UNESP]
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Gênesis Reprodução Animal
UCDB Programa de Pós-Graduação em Biotecnologia
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Nogueira, Ériklis
Silva, Ailson Sebastião da
Amaral, Thaís Basso
Ítavo, Luís Carlos Vinhas
Dias, Alexandre Menezes
Mingoti, Gisele Zoccal [UNESP]
dc.subject.por.fl_str_mv metabolic profile
nutrition and reproduction
OPU
topic metabolic profile
nutrition and reproduction
OPU
description To verify the effects of energy supplementation and fat on follicular dynamics, metabolic profile and the production of oocytes, 15 young heifers (Bos taurus indicus) with an average age of 14 months and with an initial weight of 256.35 kg were assigned to two treatments according to weight and follicular population as evaluated by ultrasonography: in T1 (1.0 × M), animals received 100% of the energy requirements for maintenance; in T2 (1.7 × M), animals received 170% of the energy requirements for maintenance, achieved by the addition of 200 g of Megalac®. After a period of adaptation to the diet, the treatments, blood collection and follicular aspirations were started using a randomized design. The dry matter intake and weight gain were lower in the 1.0 × M group than in the 1.7 × M group. No differences were found in the plasma progesterone concentrations, albumin, glucose, urea or gonadotropin (FSH and LH) levels between the groups. The mean concentrations of cholesterol were higher in the 1.7 × M group. The total number of small (<4 mm) and medium follicles (4-8 mm) was not altered by the treatments, but the number of small follicles increased on days 1 and 2 of the estrous cycle, with higher values found in the 1.7 × M group. The average of the oocytes also increased (9.50±2.1 and 12.5±4.4 for the 1.0 × M and 1.7 × M groups, respectively). The rapid increase in the amount of energy offered in the diet changes the amount of follicles and oocytes available for follicular aspiration (OPU) in young heifers without changing their metabolic profile.
publishDate 2012
dc.date.none.fl_str_mv 2012-09-01
2014-05-20T15:18:24Z
2014-05-20T15:18:24Z
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/10.1590/S1516-35982012000900007
Revista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 41, n. 9, p. 2012-2017, 2012.
1516-3598
http://hdl.handle.net/11449/30876
10.1590/S1516-35982012000900007
S1516-35982012000900007
WOS:000311562800007
S1516-35982012000900007.pdf
4191951764334766
0000-0002-3059-4458
url http://dx.doi.org/10.1590/S1516-35982012000900007
http://hdl.handle.net/11449/30876
identifier_str_mv Revista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 41, n. 9, p. 2012-2017, 2012.
1516-3598
10.1590/S1516-35982012000900007
S1516-35982012000900007
WOS:000311562800007
S1516-35982012000900007.pdf
4191951764334766
0000-0002-3059-4458
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Revista Brasileira de Zootecnia
0,337
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 2012-2017
application/pdf
dc.publisher.none.fl_str_mv Sociedade Brasileira de Zootecnia
publisher.none.fl_str_mv Sociedade Brasileira de Zootecnia
dc.source.none.fl_str_mv SciELO
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 repositoriounesp@unesp.br
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