Publicação
Male effect in Churra Galega Bragançana and Suffolk ewes under long-day artificial photoperiod
| Resumo: | This study aimed to evaluate the male effect in Churra Galega Bragançana (CGB) and Suffolk (S) ewes under artificial long-day photoperiod (16L:8D). On March 21st, 34 CGB and 27 S ewes, 2-5 years old, were allocated in light control facilities. Two months later, ovarian activity was registered by progesterone concentrations in blood plasma twice weekly. Ovarian activity was controlled by vaginal sponges (FGA). Vasectomised aproned rams were used to induce ram effect and estrus detection. Ewes were observed for estrus twice daily. Ewes presenting ovarian activity were identified by endoscopy. Chi-square tests were performed to compare proportions and Student’s t-tests to compare means of the ovulation rate. After 2 months in 16L:8D photoperiod, 81.5% of Suffolk and 64.7% of CGB ewes were in anestrous (P≤0.01). Male effect was influenced by breed (S vs. CGB) – Estrus: 50.0% vs. 75.0% (P≤0.001) and Ovulation: 18.2% vs. 63.6% (P≤0.001) –, except for ovulation rate (1.0±0.0). Data suggests that male effect is more effective in CGB than in Suffolk ewes. |
|---|---|
| Autores principais: | Azevedo, Jorge |
| Outros Autores: | Correia, Teresa Montenegro; Valentim, Ramiro; Almeida, José Carlos; Simões, João; Galvão, Lurdes; Velasco, Helena; Maurício, Raimundo; Fontes, Paulo; Mendonça, Álvaro; Cardoso, Manuel |
| Ano: | 2007 |
| País: | Portugal |
| Tipo de documento: | documento de conferência |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Instituto Politécnico de Bragança |
| Idioma: | inglês |
| Origem: | Biblioteca Digital do IPB |
| _version_ | 1867172803435823104 |
|---|---|
| author | Azevedo, Jorge |
| author2 | Correia, Teresa Montenegro Valentim, Ramiro Almeida, José Carlos Simões, João Galvão, Lurdes Velasco, Helena Maurício, Raimundo Fontes, Paulo Mendonça, Álvaro Cardoso, Manuel |
| author2_role | author author author author author author author author author author |
| author_facet | Azevedo, Jorge Correia, Teresa Montenegro Valentim, Ramiro Almeida, José Carlos Simões, João Galvão, Lurdes Velasco, Helena Maurício, Raimundo Fontes, Paulo Mendonça, Álvaro Cardoso, Manuel |
| author_role | author |
| contributor_name_str_mv | Biblioteca Digital do IPB |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Azevedo, Jorge\"},{\"Person.name\":\"Correia, Teresa Montenegro\",\"Person.identifier.orcid\":\"0000-0002-9640-8320\"},{\"Person.name\":\"Valentim, Ramiro\",\"Person.identifier.orcid\":\"0000-0002-3514-988X\"},{\"Person.name\":\"Almeida, José Carlos\"},{\"Person.name\":\"Simões, João\"},{\"Person.name\":\"Galvão, Lurdes\"},{\"Person.name\":\"Velasco, Helena\"},{\"Person.name\":\"Maurício, Raimundo\",\"Person.identifier.orcid\":\"0000-0002-4099-9547\"},{\"Person.name\":\"Fontes, Paulo\"},{\"Person.name\":\"Mendonça, Álvaro\"},{\"Person.name\":\"Cardoso, Manuel\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | Biblioteca Digital do IPB |
| datacite.creators.creator.creatorName.fl_str_mv | Azevedo, Jorge Correia, Teresa Montenegro Valentim, Ramiro Almeida, José Carlos Simões, João Galvão, Lurdes Velasco, Helena Maurício, Raimundo Fontes, Paulo Mendonça, Álvaro Cardoso, Manuel |
| datacite.date.Accepted.fl_str_mv | 2007-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2011-07-15T10:00:26Z |
| datacite.date.embargoed.fl_str_mv | 2011-07-15T10:00:26Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.titles.title.fl_str_mv | Male effect in Churra Galega Bragançana and Suffolk ewes under long-day artificial photoperiod |
| dc.contributor.none.fl_str_mv | Biblioteca Digital do IPB |
| dc.creator.none.fl_str_mv | Azevedo, Jorge Correia, Teresa Montenegro Valentim, Ramiro Almeida, José Carlos Simões, João Galvão, Lurdes Velasco, Helena Maurício, Raimundo Fontes, Paulo Mendonça, Álvaro Cardoso, Manuel |
| dc.date.Accepted.fl_str_mv | 2007-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2011-07-15T10:00:26Z |
| dc.date.embargoed.fl_str_mv | 2011-07-15T10:00:26Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | http://hdl.handle.net/10198/5875 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | European Federation of Animal Science (EAAP) |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.title.fl_str_mv | Male effect in Churra Galega Bragançana and Suffolk ewes under long-day artificial photoperiod |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_c94f |
| description | This study aimed to evaluate the male effect in Churra Galega Bragançana (CGB) and Suffolk (S) ewes under artificial long-day photoperiod (16L:8D). On March 21st, 34 CGB and 27 S ewes, 2-5 years old, were allocated in light control facilities. Two months later, ovarian activity was registered by progesterone concentrations in blood plasma twice weekly. Ovarian activity was controlled by vaginal sponges (FGA). Vasectomised aproned rams were used to induce ram effect and estrus detection. Ewes were observed for estrus twice daily. Ewes presenting ovarian activity were identified by endoscopy. Chi-square tests were performed to compare proportions and Student’s t-tests to compare means of the ovulation rate. After 2 months in 16L:8D photoperiod, 81.5% of Suffolk and 64.7% of CGB ewes were in anestrous (P≤0.01). Male effect was influenced by breed (S vs. CGB) – Estrus: 50.0% vs. 75.0% (P≤0.001) and Ovulation: 18.2% vs. 63.6% (P≤0.001) –, except for ovulation rate (1.0±0.0). Data suggests that male effect is more effective in CGB than in Suffolk ewes. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | conferenceObject |
| fulltext.url.fl_str_mv | https://bibliotecadigital.ipb.pt/bitstreams/c068f7ba-c9dc-464c-a6bf-ec1e79b96ce0/download |
| id | ipb_84d32f4609d4e88f06beb8aab8e8de9b |
| identifier.url.fl_str_mv | http://hdl.handle.net/10198/5875 |
| instacron_str | ipb |
| institution | Instituto Politécnico de Bragança |
| instname_str | Instituto Politécnico de Bragança |
| language | eng |
| network_acronym_str | ipb |
| network_name_str | Biblioteca Digital do IPB |
| oai_identifier_str | oai:bibliotecadigital.ipb.pt:10198/5875 |
| organization_str_mv | urn:organizationAcronym:ipb |
| person_str_mv | Azevedo, Jorge Correia, Teresa Montenegro Correia, Teresa Montenegro https://www.ciencia-id.pt/1610-5AFD-75A1 1610-5AFD-75A1 http://orcid.org/0000-0002-9640-8320 0000-0002-9640-8320 Valentim, Ramiro Valentim, Ramiro https://www.ciencia-id.pt/B01B-96FF-D524 B01B-96FF-D524 http://orcid.org/0000-0002-3514-988X 0000-0002-3514-988X Almeida, José Carlos Simões, João Galvão, Lurdes Velasco, Helena Maurício, Raimundo Maurício, Raimundo http://orcid.org/0000-0002-4099-9547 0000-0002-4099-9547 Fontes, Paulo Mendonça, Álvaro Mendonça, Álvaro https://www.ciencia-id.pt/8A1F-7B31-A119 8A1F-7B31-A119 Cardoso, Manuel |
| publishDate | 2007 |
| publisher.none.fl_str_mv | European Federation of Animal Science (EAAP) |
| reponame_str | Biblioteca Digital do IPB |
| repository_id_str | urn:repositoryAcronym:ipb |
| service_str_mv | urn:repositoryAcronym:ipb |
| spelling | engEuropean Federation of Animal Science (EAAP)porThis study aimed to evaluate the male effect in Churra Galega Bragançana (CGB) and Suffolk (S) ewes under artificial long-day photoperiod (16L:8D). On March 21st, 34 CGB and 27 S ewes, 2-5 years old, were allocated in light control facilities. Two months later, ovarian activity was registered by progesterone concentrations in blood plasma twice weekly. Ovarian activity was controlled by vaginal sponges (FGA). Vasectomised aproned rams were used to induce ram effect and estrus detection. Ewes were observed for estrus twice daily. Ewes presenting ovarian activity were identified by endoscopy. Chi-square tests were performed to compare proportions and Student’s t-tests to compare means of the ovulation rate. After 2 months in 16L:8D photoperiod, 81.5% of Suffolk and 64.7% of CGB ewes were in anestrous (P≤0.01). Male effect was influenced by breed (S vs. CGB) – Estrus: 50.0% vs. 75.0% (P≤0.001) and Ovulation: 18.2% vs. 63.6% (P≤0.001) –, except for ovulation rate (1.0±0.0). Data suggests that male effect is more effective in CGB than in Suffolk ewes.application/pdfporMale effect in Churra Galega Bragançana and Suffolk ewes under long-day artificial photoperiodAzevedo, JorgePersonalCorreia, Teresa MontenegroDSpacehttp://dspace.org/items/ebf24a1e-8016-47d7-be98-2b39fe4e8caaDSpacehttp://dspace.org/items/ebf24a1e-8016-47d7-be98-2b39fe4e8caaCorreiaTeresa MontenegroCiência IDhttps://www.ciencia-id.pt1610-5AFD-75A1ORCIDhttp://orcid.org0000-0002-9640-8320Researcher IDhttps://www.researcherid.comK-2190-2014Scopus Author IDhttps://www.scopus.com36607620800PersonalValentim, RamiroDSpacehttp://dspace.org/items/7c1f54bd-81e6-45c4-ac4d-6a297ecd0f35DSpacehttp://dspace.org/items/7c1f54bd-81e6-45c4-ac4d-6a297ecd0f35ValentimRamiroCiência IDhttps://www.ciencia-id.ptB01B-96FF-D524ORCIDhttp://orcid.org0000-0002-3514-988XAlmeida, José CarlosSimões, JoãoGalvão, LurdesVelasco, HelenaPersonalMaurício, RaimundoDSpacehttp://dspace.org/items/18be4d07-9fbf-409a-b0a9-c78af6b49b19DSpacehttp://dspace.org/items/18be4d07-9fbf-409a-b0a9-c78af6b49b19MaurícioRaimundoORCIDhttp://orcid.org0000-0002-4099-9547Fontes, PauloPersonalMendonça, ÁlvaroDSpacehttp://dspace.org/items/94a7121f-3469-4d32-98c6-e8e06bd4637eDSpacehttp://dspace.org/items/94a7121f-3469-4d32-98c6-e8e06bd4637eMendonçaÁlvaroCiência IDhttps://www.ciencia-id.pt8A1F-7B31-A119Cardoso, ManuelHostingInstitutionOrganizationalBiblioteca Digital do IPBe-mailmailto:dspace@ipb.ptdspace@ipb.ptISBNIsPartOf978-90-8686-045-62011-07-15T10:00:26Z20072007-01-01T00:00:00ZHandlehttp://hdl.handle.net/10198/5875http://purl.org/coar/access_right/c_abf2open access587020 bytesother research producthttp://purl.org/coar/resource_type/c_c94fconference objecthttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://bibliotecadigital.ipb.pt/bitstreams/c068f7ba-c9dc-464c-a6bf-ec1e79b96ce0/downloadBook of Abstracts of the 58th Annual Meeting of The European Association for Animal Production125125Dublin, Irlanda |
| spellingShingle | Male effect in Churra Galega Bragançana and Suffolk ewes under long-day artificial photoperiod Azevedo, Jorge |
| status | SINGLETON |
| title | Male effect in Churra Galega Bragançana and Suffolk ewes under long-day artificial photoperiod |
| title_full | Male effect in Churra Galega Bragançana and Suffolk ewes under long-day artificial photoperiod |
| title_fullStr | Male effect in Churra Galega Bragançana and Suffolk ewes under long-day artificial photoperiod |
| title_full_unstemmed | Male effect in Churra Galega Bragançana and Suffolk ewes under long-day artificial photoperiod |
| title_short | Male effect in Churra Galega Bragançana and Suffolk ewes under long-day artificial photoperiod |
| title_sort | Male effect in Churra Galega Bragançana and Suffolk ewes under long-day artificial photoperiod |
| url | http://hdl.handle.net/10198/5875 |
| visible | 1 |