Behavioural and seminal characteristics of Santa Ines rams subjected to successive semen collections in the Amazonian region
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/10.4081/ijas.2012.e67 http://hdl.handle.net/11449/2618 |
Resumo: | The objective of this study was to evaluate the reproductive performance of Santa Ines rams subjected to successive semen collections in an Amazonian climate. Four rams were subjected to successive ejaculations during a maximum period of three hours. This procedure was repeated three times at 15-day intervals. Sexual and behavioural (libido) and andrological (testicular and seminal) assessments were performed. A total of 81 ejaculates were collected. Libido and semen vigour, volume, appearance and concentration decreased as the ejaculation frequency increased (P<0.05) and sperm motility showed a decreasing trend (P=0.06). The seminal pH increased over the sequence of collections (P<0.05). The only significant differences observed between individual rams were the variable scrotal circumference and the percentages of live sperm and sperm abnormalities (P<0.05). All the parameters of the first ejaculation were within the normal range for this species, which suggests that the local climatic conditions (high temperature and humidity) did not affect the behavioural, testicular or seminal parameters of experimental rams. Our findings indicate that the reproductive performance of Santa Ines rams could be affected by the intensification of ejaculation frequency; however, individual male variation needs to be taken into consideration. |
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Behavioural and seminal characteristics of Santa Ines rams subjected to successive semen collections in the Amazonian regionEjaculation frequencyLibidoSemen parametersSheepThe objective of this study was to evaluate the reproductive performance of Santa Ines rams subjected to successive semen collections in an Amazonian climate. Four rams were subjected to successive ejaculations during a maximum period of three hours. This procedure was repeated three times at 15-day intervals. Sexual and behavioural (libido) and andrological (testicular and seminal) assessments were performed. A total of 81 ejaculates were collected. Libido and semen vigour, volume, appearance and concentration decreased as the ejaculation frequency increased (P<0.05) and sperm motility showed a decreasing trend (P=0.06). The seminal pH increased over the sequence of collections (P<0.05). The only significant differences observed between individual rams were the variable scrotal circumference and the percentages of live sperm and sperm abnormalities (P<0.05). All the parameters of the first ejaculation were within the normal range for this species, which suggests that the local climatic conditions (high temperature and humidity) did not affect the behavioural, testicular or seminal parameters of experimental rams. Our findings indicate that the reproductive performance of Santa Ines rams could be affected by the intensification of ejaculation frequency; however, individual male variation needs to be taken into consideration.Univ Estadual Paulista, Dept Anim Reprod, BR-14884900 Jaboticabal, SP, BrazilEmpresa Assistencia Tecn, Alenquer, Para, BrazilUniversidade Federal de Viçosa (UFV), Dept Zootecnia, Vicosa, MG, BrazilUniv Fed Rural Amazonia, Inst Saúde & Prod Anim, Belem, Para, BrazilUniv Estadual Paulista, Dept Anim Reprod, BR-14884900 Jaboticabal, SP, BrazilPagepress PublUniversidade Estadual Paulista (Unesp)Empresa Assistencia TecnUniversidade Federal de Viçosa (UFV)Universidade Federal Rural da Amazônia (UFRA)Oliveira, Maria Emilia F. [UNESP]de Almeida, Odonei M.Pinho, Rogerio O.Vicente, Wilter R. R. [UNESP]Rodrigues, Luiz Fernando S.2014-05-20T13:15:30Z2014-05-20T13:15:30Z2012-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article6application/pdfhttp://dx.doi.org/10.4081/ijas.2012.e67Italian Journal of Animal Science. Pavia: Pagepress Publ, v. 11, n. 4, p. 6, 2012.1594-4077http://hdl.handle.net/11449/261810.4081/ijas.2012.e67WOS:000319902200006WOS000319902200006.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengItalian Journal of Animal Science0.9900,434info:eu-repo/semantics/openAccess2023-10-06T06:02:59Zoai:repositorio.unesp.br:11449/2618Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-06T06:02:59Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Behavioural and seminal characteristics of Santa Ines rams subjected to successive semen collections in the Amazonian region |
title |
Behavioural and seminal characteristics of Santa Ines rams subjected to successive semen collections in the Amazonian region |
spellingShingle |
Behavioural and seminal characteristics of Santa Ines rams subjected to successive semen collections in the Amazonian region Oliveira, Maria Emilia F. [UNESP] Ejaculation frequency Libido Semen parameters Sheep |
title_short |
Behavioural and seminal characteristics of Santa Ines rams subjected to successive semen collections in the Amazonian region |
title_full |
Behavioural and seminal characteristics of Santa Ines rams subjected to successive semen collections in the Amazonian region |
title_fullStr |
Behavioural and seminal characteristics of Santa Ines rams subjected to successive semen collections in the Amazonian region |
title_full_unstemmed |
Behavioural and seminal characteristics of Santa Ines rams subjected to successive semen collections in the Amazonian region |
title_sort |
Behavioural and seminal characteristics of Santa Ines rams subjected to successive semen collections in the Amazonian region |
author |
Oliveira, Maria Emilia F. [UNESP] |
author_facet |
Oliveira, Maria Emilia F. [UNESP] de Almeida, Odonei M. Pinho, Rogerio O. Vicente, Wilter R. R. [UNESP] Rodrigues, Luiz Fernando S. |
author_role |
author |
author2 |
de Almeida, Odonei M. Pinho, Rogerio O. Vicente, Wilter R. R. [UNESP] Rodrigues, Luiz Fernando S. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Empresa Assistencia Tecn Universidade Federal de Viçosa (UFV) Universidade Federal Rural da Amazônia (UFRA) |
dc.contributor.author.fl_str_mv |
Oliveira, Maria Emilia F. [UNESP] de Almeida, Odonei M. Pinho, Rogerio O. Vicente, Wilter R. R. [UNESP] Rodrigues, Luiz Fernando S. |
dc.subject.por.fl_str_mv |
Ejaculation frequency Libido Semen parameters Sheep |
topic |
Ejaculation frequency Libido Semen parameters Sheep |
description |
The objective of this study was to evaluate the reproductive performance of Santa Ines rams subjected to successive semen collections in an Amazonian climate. Four rams were subjected to successive ejaculations during a maximum period of three hours. This procedure was repeated three times at 15-day intervals. Sexual and behavioural (libido) and andrological (testicular and seminal) assessments were performed. A total of 81 ejaculates were collected. Libido and semen vigour, volume, appearance and concentration decreased as the ejaculation frequency increased (P<0.05) and sperm motility showed a decreasing trend (P=0.06). The seminal pH increased over the sequence of collections (P<0.05). The only significant differences observed between individual rams were the variable scrotal circumference and the percentages of live sperm and sperm abnormalities (P<0.05). All the parameters of the first ejaculation were within the normal range for this species, which suggests that the local climatic conditions (high temperature and humidity) did not affect the behavioural, testicular or seminal parameters of experimental rams. Our findings indicate that the reproductive performance of Santa Ines rams could be affected by the intensification of ejaculation frequency; however, individual male variation needs to be taken into consideration. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-01 2014-05-20T13:15:30Z 2014-05-20T13:15:30Z |
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/10.4081/ijas.2012.e67 Italian Journal of Animal Science. Pavia: Pagepress Publ, v. 11, n. 4, p. 6, 2012. 1594-4077 http://hdl.handle.net/11449/2618 10.4081/ijas.2012.e67 WOS:000319902200006 WOS000319902200006.pdf |
url |
http://dx.doi.org/10.4081/ijas.2012.e67 http://hdl.handle.net/11449/2618 |
identifier_str_mv |
Italian Journal of Animal Science. Pavia: Pagepress Publ, v. 11, n. 4, p. 6, 2012. 1594-4077 10.4081/ijas.2012.e67 WOS:000319902200006 WOS000319902200006.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Italian Journal of Animal Science 0.990 0,434 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
6 application/pdf |
dc.publisher.none.fl_str_mv |
Pagepress Publ |
publisher.none.fl_str_mv |
Pagepress Publ |
dc.source.none.fl_str_mv |
Web of Science 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 |
|
_version_ |
1792961474415558656 |