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9. | | URIBE VELASQUEZ, L. F.; OBA, E.; BRASIL, L. H.; WESCHLER, F. S.; STACHISSINI, A. V. M. Concentracoes plasmaticas dos hormonios tiroideanos de cabras Pardas Alpinas leiteiras submetidas ao estresse termico. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 34., 1997, Juiz de Fora, MG. Anais... Juiz de Fora: Sociedade Brasileira de Zootecnia, 1997. v.4 p.275-276. v.4-Nutricao de nao-ruminantes; Pequenos animais e animais silvestres; Bioclimatologia e etologia; Sistemas de producao; Economia. Biblioteca(s): Embrapa Caprinos e Ovinos. |
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10. | | OBA, E.; SOUZA, M. I. L.; URIBE-VELÁSQUEZ, L. F.; RAMOS, A. de A. Concentrações plasmáticas e ritmo circadiano de cortisol e prolactina (PRL) em ovelhas, durante o anestro estacional. Arquivos de Ciências Veterinárias e Zoologia da UNIPAR, Umuarama, v. 4, n. 2, p. 169-174, 2001. Biblioteca(s): Embrapa Caprinos e Ovinos. |
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14. | | TOSTES, L. V.; MARINHO, R. G. B.; TAVARES-DIAS, M.; OBA, E. T. Avaliação de pirarucus (Arapaima gigas) cultivados em pisciculturas do Municipío de Macapá, AP. In: CONGRESSO BRASILEIRO DE ENGENHARIA DE PESCA, 17., 2011, Belém, PA. Engenharia de pesca: construindo o desenvolvimento sustentável do setor pesqueiro nacional: [anais]. Belém, PA: AEP: FAEP, 2011. Biblioteca(s): Embrapa Amapá. |
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15. | | PAVÃO, G. D.; FERNANDES, C. B.; MARTINS, L. R.; LANDIM-ALVARENGA, F. C.; OBA, E. Maturação nuclear de oócitos ovinos em meio suplementado com cisteamina, soro fetal bovino (SFB) e albumina sérica bovina (BSA). Acta Scientiae Veterinariae, Porto Alegre, v. 35, p.1184, 2007. Suplemento 3. Edição dos anais da 21o. Reunião Anual da Sociedade Brasileira de Tecnologia de Embriões - SBTE, Salvador, 2007. Biblioteca(s): Embrapa Caprinos e Ovinos. |
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16. | | SOUZA, M. I. L.; VELASQUEZ, L. F. U.; OBA, E.; RAMOS, A. de A. Ritmo circadiano de secrecao de estradiol, progesterona e FSH em ovelhas durante o anestro estacional. In: REUNIAO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 34., 1997, Juiz de Fora, MG. Anais... Juiz de Fora: Sociedade Brasileira de Zootecnia, 1997. p.361-363. Biblioteca(s): Embrapa Caprinos e Ovinos. |
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20. | | OBA, E. T.; MONTAGNER, D.; COSTA, A. G.; DIAS, M. T. Características eritrocitárias do tambaqui Colossoma macropromum (Characidae) em sistema de cultivo intensivo no município de Macapá, estado do Amapá. In: CONGRESSO BRASILEIRO DE PRODUÇÃO DE PEIXES NATIVOS DE ÁGUA DOCE, 2.; ENCONTRO MATO-GROSSENSE DE AQUICULTORES, 1., 2009, Cuiabá. [Resumos...]. Cuiabá: Embrapa: Aquabio, 2009. 1 CD-ROM. Biblioteca(s): Embrapa Amapá. |
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Registro Completo
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
05/01/2015 |
Data da última atualização: |
01/06/2017 |
Tipo da produção científica: |
Nota Técnica/Nota Científica |
Autoria: |
BALARO, M. F. A.; FONSECA, J. F. da; OBA, E.; CARDOSO, E. da C.; BRANDÃO, F. Z. |
Afiliação: |
Mario Felipe Alvarez Balaro, Universidade Federal Fluminense (UFF) - Niteroi, RJ, Brazil; JEFERSON FERREIRA DA FONSECA, CNPC; Eunice Oba, Universidade do Estado de São Paulo (USP) -Botucatu, SP, Brazil; Elyzabeth da Cruz Cardoso, UFF - Niteroi, RJ, Brazil; Felipe Zandonadi Brandão, UFF - Niteroi, RJ, Brazil. |
Título: |
Is the Santa Inês sheep a typical non-seasonal breeder in the Brazilian Southeast?. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Tropical Animal Health and Production, Edinburgh, v. 46, n. 8, p. 1533-1537, Dec. 2014. |
DOI: |
10.1007/s11250-014-0672-8 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: This study aimed to characterize the annual reproductive cycle of Santa Inês sheep in the Fluminense lowland region (latitude 22° 27' 45? south, Rio de Janeiro, Brazil) between September 2011 and August 2012. Ten ewes were maintained in a semi-intensive system under natural photoperiods with access to pasture and shelter. Blood samples were collected every 2 weeks to determine plasma progesterone concentrations. The body condition score (BCS) was determined each month. There was no seasonal variation in the plasma progesterone concentration from the months of September to January, April, and May to August. In the months of February and April, the plasma hormone levels were higher than August to November. Seventy percent (7/10) of the sheep studied had short seasonal anestrus. The periods of anestrus were concentrated between the months of September and December (spring season) in 85.7 % (6/7) of the cases evaluated. In these cases, 57.1 % (4/7) also had short periods of reproductive inactivity during other months of the year. The progesterone values obtained in the spring corroborate the higher reproductive anestrus observed in this season. Higher plasma progesterone values were found in summer and autumn with reduction in the winter to lower values in the spring. No changes in the BCS during the study period were observed. Under the studied conditions, the Santa Inês sheep showed a low degree of reproductive seasonality. However, some individual ewes had seasonal anestrus during the spring. Further studies that include management techniques are needed to improve reproductive efficiency without hormone therapy in this breed under tropical conditions. MenosAbstract: This study aimed to characterize the annual reproductive cycle of Santa Inês sheep in the Fluminense lowland region (latitude 22° 27' 45? south, Rio de Janeiro, Brazil) between September 2011 and August 2012. Ten ewes were maintained in a semi-intensive system under natural photoperiods with access to pasture and shelter. Blood samples were collected every 2 weeks to determine plasma progesterone concentrations. The body condition score (BCS) was determined each month. There was no seasonal variation in the plasma progesterone concentration from the months of September to January, April, and May to August. In the months of February and April, the plasma hormone levels were higher than August to November. Seventy percent (7/10) of the sheep studied had short seasonal anestrus. The periods of anestrus were concentrated between the months of September and December (spring season) in 85.7 % (6/7) of the cases evaluated. In these cases, 57.1 % (4/7) also had short periods of reproductive inactivity during other months of the year. The progesterone values obtained in the spring corroborate the higher reproductive anestrus observed in this season. Higher plasma progesterone values were found in summer and autumn with reduction in the winter to lower values in the spring. No changes in the BCS during the study period were observed. Under the studied conditions, the Santa Inês sheep showed a low degree of reproductive seasonality. However, some individual ewes had seasonal ... Mostrar Tudo |
Palavras-Chave: |
Anoestrus; Cyclicity; Photoperiodicity; Seasonality. |
Thesagro: |
Ciclo estral; Fotoperiodismo; Ovelha; Ovino; Progesterona; Reprodução animal; Sangue. |
Thesaurus NAL: |
Blood sampling; Ewes; Progesterone; Reproduction; Reproductive performance; Sheep. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02762naa a2200385 a 4500 001 2004232 005 2017-06-01 008 2014 bl uuuu u00u1 u #d 024 7 $a10.1007/s11250-014-0672-8$2DOI 100 1 $aBALARO, M. F. A. 245 $aIs the Santa Inês sheep a typical non-seasonal breeder in the Brazilian Southeast?.$h[electronic resource] 260 $c2014 520 $aAbstract: This study aimed to characterize the annual reproductive cycle of Santa Inês sheep in the Fluminense lowland region (latitude 22° 27' 45? south, Rio de Janeiro, Brazil) between September 2011 and August 2012. Ten ewes were maintained in a semi-intensive system under natural photoperiods with access to pasture and shelter. Blood samples were collected every 2 weeks to determine plasma progesterone concentrations. The body condition score (BCS) was determined each month. There was no seasonal variation in the plasma progesterone concentration from the months of September to January, April, and May to August. In the months of February and April, the plasma hormone levels were higher than August to November. Seventy percent (7/10) of the sheep studied had short seasonal anestrus. The periods of anestrus were concentrated between the months of September and December (spring season) in 85.7 % (6/7) of the cases evaluated. In these cases, 57.1 % (4/7) also had short periods of reproductive inactivity during other months of the year. The progesterone values obtained in the spring corroborate the higher reproductive anestrus observed in this season. Higher plasma progesterone values were found in summer and autumn with reduction in the winter to lower values in the spring. No changes in the BCS during the study period were observed. Under the studied conditions, the Santa Inês sheep showed a low degree of reproductive seasonality. However, some individual ewes had seasonal anestrus during the spring. Further studies that include management techniques are needed to improve reproductive efficiency without hormone therapy in this breed under tropical conditions. 650 $aBlood sampling 650 $aEwes 650 $aProgesterone 650 $aReproduction 650 $aReproductive performance 650 $aSheep 650 $aCiclo estral 650 $aFotoperiodismo 650 $aOvelha 650 $aOvino 650 $aProgesterona 650 $aReprodução animal 650 $aSangue 653 $aAnoestrus 653 $aCyclicity 653 $aPhotoperiodicity 653 $aSeasonality 700 1 $aFONSECA, J. F. da 700 1 $aOBA, E. 700 1 $aCARDOSO, E. da C. 700 1 $aBRANDÃO, F. Z. 773 $tTropical Animal Health and Production, Edinburgh$gv. 46, n. 8, p. 1533-1537, Dec. 2014.
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