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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
30/06/2023 |
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Autoria: |
CHALLIS, J. R. G.; LINZELL, J. L. |
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Título: |
Oestrone metabolism in pregnant and lactating goats. |
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Ano de publicação: |
1973 |
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Fonte/Imprenta: |
Journal of Endocrinology, v. 57, n. 3, p. 451-457, Jun. 1973. |
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DOI: |
https://doi.org/10.1677/joe.0.0570451 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Since blood oestrogen levels are much higher during pregnancy in the goat than in the sheep a continuous isotope infusion technique was used to study oestrone metabolism in five experiments on two goats during late pregnancy and early lactation. The metabolic clearance rate was similar to that in the sheep in all experiments (mean value ± S.E.M., 4·02 ± 0·25 1/min); therefore the high blood oestrone concentrations in late pregnancy (851?2043 pg/ml) were due to high oestrone production rates (4·22?7·54 ?g/min). There was some conversion of oestrone to oestradiol-17? by the mammary glands and other tissues (mean conversion ratio 17·1%) and a little (< 10%) binding of oestrone to erythrocytes. The uptake of oestrone by the mammary gland corresponded to < 3% of the total production rate. These results are compared with those obtained for other steroid hormones (progesterone, cortisol) in the goat and sheep. |
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Palavras-Chave: |
Oestrogens. |
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Thesagro: |
Caprino; Fisiologia; Glândula Mamaria; Prenhez; Reprodução. |
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Thesaurus Nal: |
Endocrinology; Goats; Hormones; Mammary glands; Pregnancy; Reproduction; Sheep. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01741naa a2200301 a 4500
001 1522890
005 2023-06-30
008 1973 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1677/joe.0.0570451$2DOI
100 1 $aCHALLIS, J. R. G.
245 $aOestrone metabolism in pregnant and lactating goats.$h[electronic resource]
260 $c1973
520 $aAbstract: Since blood oestrogen levels are much higher during pregnancy in the goat than in the sheep a continuous isotope infusion technique was used to study oestrone metabolism in five experiments on two goats during late pregnancy and early lactation. The metabolic clearance rate was similar to that in the sheep in all experiments (mean value ± S.E.M., 4·02 ± 0·25 1/min); therefore the high blood oestrone concentrations in late pregnancy (851?2043 pg/ml) were due to high oestrone production rates (4·22?7·54 ?g/min). There was some conversion of oestrone to oestradiol-17? by the mammary glands and other tissues (mean conversion ratio 17·1%) and a little (< 10%) binding of oestrone to erythrocytes. The uptake of oestrone by the mammary gland corresponded to < 3% of the total production rate. These results are compared with those obtained for other steroid hormones (progesterone, cortisol) in the goat and sheep.
650 $aEndocrinology
650 $aGoats
650 $aHormones
650 $aMammary glands
650 $aPregnancy
650 $aReproduction
650 $aSheep
650 $aCaprino
650 $aFisiologia
650 $aGlândula Mamaria
650 $aPrenhez
650 $aReprodução
653 $aOestrogens
700 1 $aLINZELL, J. L.
773 $tJournal of Endocrinology$gv. 57, n. 3, p. 451-457, Jun. 1973.
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Embrapa Caprinos e Ovinos (CNPC) |
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| 1. |  | SILVA, C. A. da; OBA, E. T.; RAMSDORF, W. A.; MAGALHÃES, V. F.; CESTARI, M. M.; RIBEIRO, C. A. O.; ASSIS, H. C. S. de. First report about saxitoxins in freshwater fish Hoplias malabaricus through trophic exposure. Toxicon, Oxford, v. 57, n. 1, p. 141-147, jan. 2011.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Amapá. |
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| 2. | | PAMPLONA, J. H.; OBA, E. T.; SILVA, T. A.; RAMOS, L. P.; RAMSDORF, W. A.; CESTARI, M. M.; RIBEIRO, C. A. O.; ZAMPRONIO, A. R.; ASSIS, H. C. S. de. Subchronic effects of dipyrone on the fish species Rhamdia quelen. Ecotoxicology and Environmental Safety, v. 74, n. 3, p. 342-349, Mar. 2011.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
| Biblioteca(s): Embrapa Amapá. |
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| Registros recuperados : 2 | |
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