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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
30/08/2016 |
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Data da última atualização: |
03/10/2016 |
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Autoria: |
ADAMS, N. R. |
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Título: |
Cervical mucus and reproductive efficiency in ewes after exposure to oestrogenic pastures. |
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Ano de publicação: |
1977 |
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Fonte/Imprenta: |
Australian Journal of Agricultural Research, v. 28, n. 3, p. 481-489, 1977. |
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DOI: |
10.1071/AR9770481 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: A total of 227 cervical mucus samples was studied in ewes from 12 flocks with varying histories of clover disease, and the results related to the reproductive performance of the ewes. The mucus of ewes from flocks known to be affected with clover disease had a lower spinbarkheit than that of controls (54 v. 92 mm, P < 0.05). The spinbarkheit of cervical mucus at first mating was inversely correlated with the return-to-service rates of the ewes at subsequent matings (r = ?0.181, P < 0.01). The low value of this correlation indicates that most of the variability in mucus spinbarkheit was due to other factors; the stage of the breeding season, and the total amount and the proportion of dry weight of the mucus collected, were also related to the mucus spinbarkheit. Variability was decreased by adjusting the spinbarkheit for the time of the breeding season at which the sample was collected. There was a threshold value of 60 mm for mucus spinbarkheit, above which fertility was independent of mucus spinbarkheit value. The proportion of samples with sub-threshold spinbarkheit values collected from a flock was related both to flock return-toservice rate (r = 0.663, P < 0.05) and the proportion of non-lambing ewes in the flock (r = 0.605, P < 0.05). Neither mucus spinbarkheit nor the proportion of non-lambing ewes was associated with any abnormal increase in the proportion of ewes which failed to lamb in successive years.
It is concluded that cervical mucus spinbarkheit may be used to measure the lowered reproductive performance of ewes which have been exposed to oestrogenic pasture. MenosAbstract: A total of 227 cervical mucus samples was studied in ewes from 12 flocks with varying histories of clover disease, and the results related to the reproductive performance of the ewes. The mucus of ewes from flocks known to be affected with clover disease had a lower spinbarkheit than that of controls (54 v. 92 mm, P < 0.05). The spinbarkheit of cervical mucus at first mating was inversely correlated with the return-to-service rates of the ewes at subsequent matings (r = ?0.181, P < 0.01). The low value of this correlation indicates that most of the variability in mucus spinbarkheit was due to other factors; the stage of the breeding season, and the total amount and the proportion of dry weight of the mucus collected, were also related to the mucus spinbarkheit. Variability was decreased by adjusting the spinbarkheit for the time of the breeding season at which the sample was collected. There was a threshold value of 60 mm for mucus spinbarkheit, above which fertility was independent of mucus spinbarkheit value. The proportion of samples with sub-threshold spinbarkheit values collected from a flock was related both to flock return-toservice rate (r = 0.663, P < 0.05) and the proportion of non-lambing ewes in the flock (r = 0.605, P < 0.05). Neither mucus spinbarkheit nor the proportion of non-lambing ewes was associated with any abnormal increase in the proportion of ewes which failed to lamb in successive years.
It is concluded that cervical mucus spinbarkheit may... Mostrar Tudo |
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Palavras-Chave: |
Animal disorders; Muco cervical; Oestrogens. |
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Thesagro: |
Eficiencia reprodutiva; Nutrição; Ovino; Pastagem. |
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Thesaurus Nal: |
cervical mucus; Reproductive performance; Sheep. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02343naa a2200253 a 4500
001 2051987
005 2016-10-03
008 1977 bl uuuu u00u1 u #d
024 7 $a10.1071/AR9770481$2DOI
100 1 $aADAMS, N. R.
245 $aCervical mucus and reproductive efficiency in ewes after exposure to oestrogenic pastures.
260 $c1977
520 $aAbstract: A total of 227 cervical mucus samples was studied in ewes from 12 flocks with varying histories of clover disease, and the results related to the reproductive performance of the ewes. The mucus of ewes from flocks known to be affected with clover disease had a lower spinbarkheit than that of controls (54 v. 92 mm, P < 0.05). The spinbarkheit of cervical mucus at first mating was inversely correlated with the return-to-service rates of the ewes at subsequent matings (r = ?0.181, P < 0.01). The low value of this correlation indicates that most of the variability in mucus spinbarkheit was due to other factors; the stage of the breeding season, and the total amount and the proportion of dry weight of the mucus collected, were also related to the mucus spinbarkheit. Variability was decreased by adjusting the spinbarkheit for the time of the breeding season at which the sample was collected. There was a threshold value of 60 mm for mucus spinbarkheit, above which fertility was independent of mucus spinbarkheit value. The proportion of samples with sub-threshold spinbarkheit values collected from a flock was related both to flock return-toservice rate (r = 0.663, P < 0.05) and the proportion of non-lambing ewes in the flock (r = 0.605, P < 0.05). Neither mucus spinbarkheit nor the proportion of non-lambing ewes was associated with any abnormal increase in the proportion of ewes which failed to lamb in successive years. It is concluded that cervical mucus spinbarkheit may be used to measure the lowered reproductive performance of ewes which have been exposed to oestrogenic pasture.
650 $acervical mucus
650 $aReproductive performance
650 $aSheep
650 $aEficiencia reprodutiva
650 $aNutrição
650 $aOvino
650 $aPastagem
653 $aAnimal disorders
653 $aMuco cervical
653 $aOestrogens
773 $tAustralian Journal of Agricultural Research$gv. 28, n. 3, p. 481-489, 1977.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 6.730 | |
| 42. |  | SORDI, A.; DIECKOW, J.; PIVA, J. T.; ALBUQUERQUE, M. A.; BAYER, C.; TOMAZI, M. Emissão de óxido nitroso a partir de urina e esterco de bovinos em pastagem. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 33., 2011, Uberlândia. Solos nos biomas brasileiros: sustentabilidade e mudanças climáticas: anais. [Uberlândia]: SBCS: UFU, ICIAG, 2011. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Agropecuária Oeste. |
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| 50. | | LESSA, A. C. da R.; LENGRUBER, J. de A.; URQUIAGA, S.; BODDEY, R. M.; ALVES, B. J. R. Importância das excretas de bovinos na produção de óxido nitroso em pastagens. In: SEMANA CIENTÍFICA JOHANNA DÖBEREINER, 7., 2007, Seropédica, RJ. Resumos... Seropédica: Embrapa Agrobiologia, 2007. 1 CD-ROM. Parceria: UFRRJ| Tipo: Resumo em Anais de Congresso | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Agrobiologia. |
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| 52. | | ANDRADE, R. G.; LEIVAS, J. F.; ALVAREZ, I. A.; VICENTE, L. E.; NOGUEIRA, S. F.; HOTT, M. C.; TAKEMURA, C. M.; LOEBMANN, D. G. dos S. W. Evapotranspiration estimation in pastures at the municipality of Campo Grande, Brazil, using SEBAL and remote sensing data. In: AGU FALL MEETING, 2011, San Francisco. Anais... San Francisco: AGU, 2011.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Gado de Leite. |
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| 53. | | VIEIRA JUNIOR, J. R.; FERNANDES, C. de F.; MARREIROS, J. A. A.; SANGI, S. C.; FONSECA, A. S. da; SOUZA, A. S. da; SILVA, D. S. G. da; FREIRE, T. C.; MATOS, S. I.; MAIA, D. Z. Levantamento da ocorrência da morte das pastagens em Rondônia. Porto Velho: Embrapa Rondônia, 2014. (Embrapa Rondônia. Comunicado Técnico, 394).| Tipo: Comunicado Técnico/Recomendações Técnicas |
| Biblioteca(s): Embrapa Rondônia. |
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| 55. | | PRATES, A.; QUADROS, L. F. P.; MACHADO, D.; BARRO, R.; CEZIMBRA, I. M.; BONNET, O. J. F.; GENRO, T. C. M.; CARVALHO, P. C. F. Grazing intensity as a strategy to mitigate methane in native grassland. In: INTERNATIONAL SYMPOSIUM ON GREENHOUSE GASES IN AGRICULTURE, 2., 2016, Campo Grande, MS. Proceedings... Brasília, DF: Embrapa, 2016. p. 205-212. (Embrapa Gado de Corte. Documentos, 216). Coordenador: Roberto Giolo de Almeida. II SIGEE.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sul. |
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| 57. | | SENA, K. R.; CID, D.; ALVES, T. E. L.; SOUZA, J. A. S. de; TONATO, F.; MUNIZ, A. W.; MELGUEIRO, F. I. Efeito de taxas de semeadura no estabelecimento de cultivares de gramíneas forrageiras em condições de terra firme no Amazonas. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 55.; CONGRESSO BRASILEIRO DE ZOOTECNIA, 28., 2018, Goiânia. Construindo saberes, formando pessoas e transformando a produção animal: anais eletrônicos. Goiânia: Sociedade Brasileira de Zootecnia, 2018.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Ocidental. |
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