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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: |
04/09/2023 |
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Autoria: |
ROY, A. |
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Título: |
Egg yolk-coagulating enzyme in the semen and cowper's gland of the goat. |
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Ano de publicação: |
1957 |
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Fonte/Imprenta: |
Nature, v. 179, n. 4554 p. 318-319, Feb. 1957. |
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DOI: |
https://doi.org/10.1038/179318b0 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Glycine egg yolk and egg yolk citrate, prepared by mixing equal volumes of 4 per cent glycine and egg yolk and 3.6 per cent sodium citrate and egg yolk, were used in an attempt to extend the volume of ejaculated goat semen and to preserve the motility and fertility of the spermatozoa. With semen diluted twenty times it was found that most of the initially motile spermatozoa remained so for three days in both the diluents at 3° C. ; thereafter the number of live sperm and degree of motility declined precipitously. Extinction of spermatozoal life in glycine egg yolk was always preceded by coagulation of the diluent. The following observations show that this coagulation is due to the presence of an enzyme in goat semen. The enzyme is present in plasma and requires activation by calcium ; hence absence or delay of coagulation of medium containing citrate. Further, when spermatozoa are freed from this enzyme, by washing with normal saline, viability is greatly improved. |
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Palavras-Chave: |
Bulbourethral glands. |
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Thesagro: |
Bioquímica; Caprino; Reprodução; Sêmen; Tecnologia. |
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Thesaurus Nal: |
Egg yolk; Enzymes; Goats; Humans; Proteasome endopeptidase complex; Proteinases; Reproduction. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01771naa a2200289 a 4500
001 1521339
005 2023-09-04
008 1957 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1038/179318b0$2DOI
100 1 $aROY, A.
245 $aEgg yolk-coagulating enzyme in the semen and cowper's gland of the goat.$h[electronic resource]
260 $c1957
520 $aAbstract: Glycine egg yolk and egg yolk citrate, prepared by mixing equal volumes of 4 per cent glycine and egg yolk and 3.6 per cent sodium citrate and egg yolk, were used in an attempt to extend the volume of ejaculated goat semen and to preserve the motility and fertility of the spermatozoa. With semen diluted twenty times it was found that most of the initially motile spermatozoa remained so for three days in both the diluents at 3° C. ; thereafter the number of live sperm and degree of motility declined precipitously. Extinction of spermatozoal life in glycine egg yolk was always preceded by coagulation of the diluent. The following observations show that this coagulation is due to the presence of an enzyme in goat semen. The enzyme is present in plasma and requires activation by calcium ; hence absence or delay of coagulation of medium containing citrate. Further, when spermatozoa are freed from this enzyme, by washing with normal saline, viability is greatly improved.
650 $aEgg yolk
650 $aEnzymes
650 $aGoats
650 $aHumans
650 $aProteasome endopeptidase complex
650 $aProteinases
650 $aReproduction
650 $aBioquímica
650 $aCaprino
650 $aReprodução
650 $aSêmen
650 $aTecnologia
653 $aBulbourethral glands
773 $tNature$gv. 179, n. 4554 p. 318-319, Feb. 1957.
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Embrapa Caprinos e Ovinos (CNPC) |
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| 12. |  | DIAS, A. M.; SILVA, R. F. da; MERCANTE, F. M. Caracterização da macrofauna invertebrada do solo sob diferentes fitofisionomias do Pantanal. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 27.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 11.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 9.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 6., 2006, Bonito, MS. A busca das raízes: anais. Dourados: Embrapa Agropecuária Oeste, 2006. (Embrapa Agropecuária Oeste. Documentos, 82). 1 CD-ROM. FERTBIO.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
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| Registros recuperados : 142 | |
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