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Reproductive parameters in Beira Baixa Merino ewes

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dc.contributor.authorRodrigues, J.P. Várzea
dc.contributor.authorAlmeida, J.P.F.
dc.contributor.authorAndrade, C.S.C.R.
dc.contributor.authorAlmeida, Luís
dc.contributor.authorRosa, Fernanda
dc.date.accessioned2011-07-19T17:07:17Z
dc.date.available2011-07-19T17:07:17Z
dc.date.issued1989
dc.description.abstractA collection and selection of data has been carried on the Merino Beira Baixa ewes at Escola Superior Agraria (Agricultural School) in Castelo Branco (ESACB) in Portugal from 1981 to 1989. According to the birth type of females (single or double) their average age at the time of first lambing amounted to 599.85±150.47 days and to 574.13±147.06 days. Diferences were not significant. However this parameter was influenced by the “year” factor (P<0.01) Is was shown that lambing interval (IP) did not depended on parturition months inside the season but depended on parturition months between the parturition season (from january to april 322.66±79.31 days and from august to december 380.67±73.81 days). The IP revealed significant diferences (P<0.01) in terms of ewe age at lambing. The apparent fertility rate, ptolificacy rate and numerical productivity are, in 1981-87 and 1987-88, 86,6% vs 85,9%, 114, 2% vs 112,3%, 92,7% vs 84,9% respectively. All these rates were influenced by the ewes age at lambing. Reproductive parameters in period with altered reproductive management (two autonomous herds without ewes transference) are diferentes, favourable to Autumn mating season. Analysis was carried on further reproductive parameters.por
dc.identifier.citationRODRIGUES, J.P.V. [et al.] (1989) - Reproductive parameters in Beira Baixa Merino ewes. In Annual Meeting for the European Association of Animal Production, 40, Dublin, 28-31th Agust. 14 p. Comunicação.por
dc.identifier.urihttp://hdl.handle.net/10400.11/736
dc.language.isoengpor
dc.publisherFEZpor
dc.subjectOvinopor
dc.subjectRaça Merino da Beira Baixapor
dc.subjectReproduçãopor
dc.titleReproductive parameters in Beira Baixa Merino ewespor
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceDublinpor
oaire.citation.title40th Annual Meeting of the European Associations of Animal Production, Dublin, 28-31th August, 1989por
person.familyNameAlmeida
person.familyNameRebello de Andrade
person.givenNameJosé Pedro
person.givenNameCarlos
person.identifier.ciencia-id4711-370B-23EB
person.identifier.orcid0000-0003-1256-2310
person.identifier.orcid0000-0002-9537-1079
person.identifier.scopus-author-id7203053536
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
relation.isAuthorOfPublication42e06b59-4ccc-48f3-8c81-761506d5211e
relation.isAuthorOfPublication8654bb41-9fe8-4fcc-92f6-1788182faef1
relation.isAuthorOfPublication.latestForDiscovery8654bb41-9fe8-4fcc-92f6-1788182faef1

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