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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
15/01/2016 |
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Data da última atualização: |
06/09/2021 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
NUNES, J. F.; CORTEEL, J. M.; COMBARNOUS, Y.; BARIL, G. |
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Afiliação: |
Jose Ferreira Nunes, CNPC. |
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Título: |
Study of the involvement of seminal plasma constituents in the seasonal variations of goat spermatozoa motility. |
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Ano de publicação: |
1982 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON GOAT PRODUCTION AND DISEASE, 3., 1982, Tucson. Proceedings... Scottsdale: Dairy Goat Journal, 1982. p. 285. |
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Idioma: |
Inglês |
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Conteúdo: |
In previous studies we observed that the elimination of seminal plasma from ejaculated sperm before freezing was to obtain a good recovery of motility of spermatozoa (spz) after thawing. However, when the motility is tested immediately after ejaculation we find that seminal plasma obtained during the breeding season (BSSP), exhibits a positive effect on the maintenance of motility whether these spermatozoa are of breeding or of non-breeding season. In contrast, seminal plasma of non breeding season elicits a strongly negative effect. This negative effect is also observed when epididymal spermatozoa are used instead of ejaculated spermatozoa. Epididymal spermatozoa exhibit a much longer survival time than ejaculated spermatozoa in the absence of added material and, BSSP is without any effect. Thus the positive effect of BSSP on ejaculated spermatozoa is probably due to the inhibition of the negative factor from seminal plasma. Very likely, this negative factor acts rapidly explaining the shorter survival time of ejaculated spermatozoa compared to epididymal spermatozoa. This hypothesis is strengthened by the observation that a protein fraction from bulbourethral glands secretion exhibits a very strong negative effect on the motility of epididymal spermatozoa. The effect of this factor can be inhibited by material from the seminal vesicles. Thus variations of fertility of goat spermatozoa as a function of season might be controlled by the balance between these two factors. |
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Palavras-Chave: |
Motilidade; Movement; Preservação do sêmen; Semen preservation. |
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Thesagro: |
Caprino; Espermatozóide; Reprodução animal. |
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Thesaurus Nal: |
Goats; Reproduction; Spermatozoa. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02363nam a2200265 a 4500
001 2034033
005 2021-09-06
008 1982 bl uuuu u01u1 u #d
100 1 $aNUNES, J. F.
245 $aStudy of the involvement of seminal plasma constituents in the seasonal variations of goat spermatozoa motility.$h[electronic resource]
260 $aIn: INTERNATIONAL CONFERENCE ON GOAT PRODUCTION AND DISEASE, 3., 1982, Tucson. Proceedings... Scottsdale: Dairy Goat Journal, 1982. p. 285.$c1982
520 $aIn previous studies we observed that the elimination of seminal plasma from ejaculated sperm before freezing was to obtain a good recovery of motility of spermatozoa (spz) after thawing. However, when the motility is tested immediately after ejaculation we find that seminal plasma obtained during the breeding season (BSSP), exhibits a positive effect on the maintenance of motility whether these spermatozoa are of breeding or of non-breeding season. In contrast, seminal plasma of non breeding season elicits a strongly negative effect. This negative effect is also observed when epididymal spermatozoa are used instead of ejaculated spermatozoa. Epididymal spermatozoa exhibit a much longer survival time than ejaculated spermatozoa in the absence of added material and, BSSP is without any effect. Thus the positive effect of BSSP on ejaculated spermatozoa is probably due to the inhibition of the negative factor from seminal plasma. Very likely, this negative factor acts rapidly explaining the shorter survival time of ejaculated spermatozoa compared to epididymal spermatozoa. This hypothesis is strengthened by the observation that a protein fraction from bulbourethral glands secretion exhibits a very strong negative effect on the motility of epididymal spermatozoa. The effect of this factor can be inhibited by material from the seminal vesicles. Thus variations of fertility of goat spermatozoa as a function of season might be controlled by the balance between these two factors.
650 $aGoats
650 $aReproduction
650 $aSpermatozoa
650 $aCaprino
650 $aEspermatozóide
650 $aReprodução animal
653 $aMotilidade
653 $aMovement
653 $aPreservação do sêmen
653 $aSemen preservation
700 1 $aCORTEEL, J. M.
700 1 $aCOMBARNOUS, Y.
700 1 $aBARIL, G.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
26/05/2003 |
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Data da última atualização: |
26/05/2003 |
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Autoria: |
ALMEIDA, L. A. de. |
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Título: |
Brazilian soybean breeding program. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
In: CHINA & INTERNATIONAL CONFERENCE & EXHIBITION ON SOYBEAN TECHNOLOGY & DEVELOPMENT COOPERATION, 2002, Beijing. Proceedings... Beijing: CISCE2002 Technical Committee, 2002. |
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Páginas: |
p.31-32. |
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Idioma: |
Inglês |
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Notas: |
Editado por Keshun Liu, Harold Karffman, Junyi Gai, Rudi Tschang, Na Zhuo, Yanxia Yu. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00549naa a2200133 a 4500
001 1445387
005 2003-05-26
008 2002 bl uuuu u00u1 u #d
100 1 $aALMEIDA, L. A. de
245 $aBrazilian soybean breeding program.
260 $c2002
300 $ap.31-32.
500 $aEditado por Keshun Liu, Harold Karffman, Junyi Gai, Rudi Tschang, Na Zhuo, Yanxia Yu.
773 $tIn: CHINA & INTERNATIONAL CONFERENCE & EXHIBITION ON SOYBEAN TECHNOLOGY & DEVELOPMENT COOPERATION, 2002, Beijing. Proceedings... Beijing: CISCE2002 Technical Committee, 2002.
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Embrapa Soja (CNPSO) |
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