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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
15/01/2016 |
Data da última atualização: |
06/09/2021 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
NUNES, J. F.; CORTEEL, J. M.; COMBARNOUS, Y.; BARIL, G. |
Afiliação: |
Jose Ferreira Nunes, CNPC. |
Título: |
Study of the involvement of seminal plasma constituents in the seasonal variations of goat spermatozoa motility. |
Ano de publicação: |
1982 |
Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON GOAT PRODUCTION AND DISEASE, 3., 1982, Tucson. Proceedings... Scottsdale: Dairy Goat Journal, 1982. p. 285. |
Idioma: |
Inglês |
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. |
Palavras-Chave: |
Motilidade; Movement; Preservação do sêmen; Semen preservation. |
Thesagro: |
Caprino; Espermatozóide; Reprodução animal. |
Thesaurus Nal: |
Goats; Reproduction; Spermatozoa. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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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Embrapa Caprinos e Ovinos (CNPC) |
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Registros recuperados : 280 | |
106. | | NUNES, J. C. S.; FONTES, P. C. R.; ARAÚJO, E. F.; SEDIYAMA, C. Potato plant growth and macronutrient uptake as affected by soil tillage and irrigation systems. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 41, n. 12, p. 1787-1792, dez. 2006 Título em portguês: Crescimento da batateira e absorção de macronutrientes influenciados pelos sistemas de preparo de solo e de irrigação.Biblioteca(s): Embrapa Unidades Centrais. |
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110. | | NUNES, J, A. R.; FIGUEIREDO, U. J.; VALLE, C. B. do; BARRIOS, S. C. L. Structure of the residual covariance matrix and implications on the selection of Brachiaria humidicola progenies. In: INTERNATIONAL SYMPOSIUM OF FORAGE BREEDING, 5., 2015, Buenos Aires, Argentina. Anais... Buenos Aires:[s.n.], 2015. 1 p.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Gado de Corte. |
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111. | | ELISEI, T.; NUNES, J. V. e; RIBEIRO JUNIOR, C.; FERNANDES JUNIOR, A. J.; PREZOTO, F. Uso da vespa social Polistes versicolor no controle de desfolhadores de eucalipto. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 45, n. 9, p. 958-964, set. 2010 Título em inglês: Use of social wasp Polistes versicolor on eucalyptus caterpillar control.Biblioteca(s): Embrapa Unidades Centrais. |
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118. | | FIGUEIREDO, U. J. de; VALLE, C. B. do; NUNES, J. A. R.; MENDONÇA, S. A.; EMATNÉ, H. J. Correlações entre caracteres morfológicos, físicos e químicos de híbridos de Brachiaria humidicola. In: CONGRESSO DE PÓS-GRADUAÇÃO DA UFLA, 19., 2010, Lavras, MG. Anais... Lavras: APG UFLA, 2010. 6 p.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Gado de Corte. |
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120. | | FIGUEIREDO, U. J.; NUNES, J. A. R.; VALLE, C. B. do; BARRIOS, S. C. L.; MENDONÇA, S. A. Capacidade de combinação em cruzamentos de genitores apomíticos x sexuais de Brachiaria humidicola. In: JORNADA CIENTÍFICA EMBRAPA GADO DE CORTE, 8., 2012, Campo Grande, MS. [Anais da..]. Campo Grande, MS: Embrapa Gado de Corte, 2012. (Embrapa Gado de Corte. Documentos, 198). 2 p.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Gado de Corte. |
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Registros recuperados : 280 | |
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