Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , |
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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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 |
_version_ |
1810021396220215296 |