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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: |
20/02/1997 |
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Data da última atualização: |
28/06/2023 |
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Autoria: |
MAXWELL, W. M. C.; WATSON, P. F. |
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Título: |
Recent progress in the preservation of ram semen. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
Animal Reproduction Science, v. 42, n. 1/4, p. 55-65, 1996. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The processing and storage of ram semen reduce the motility and disrupt the membrane integrity of spermatozoa. It is generally assumed that these changes are detrimental and are associated with a loss of fertilising capacity. Despite many years of empirical research that has established a variety of methods for the processing, storage and insemination of spermatozoa, fertility is generally lower after cervical insemination with stored than fresh semen. The components of the sperm cell responsible for this low fertility are not clearly understood. However, recent evidence suggests that while many spermatozoa remain motile after storage, the membranes of the motile cells are destabilised to the point where they may not survive further ageing in the female tract after cervical insemination. These membrane changes are similar to the capacitation and acrosome reaction of spermatozoa. Thus, stored spermatozoa may require less capacitation time in the female tract, and may readily fertilise oocytes if placed in their immediate vicinity, as with in vitro fertilisation, tubal or even intrauterine insemination. It may be possible to prevent or reverse some of these membrane changes, for example using antioxidants, and thus improve fertility following cervical insemination of sheep. |
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Palavras-Chave: |
Preservacao. |
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Thesagro: |
Armazenamento; Criopreservação; Espermatozóide; Inseminação Artificial; Ovino; Reprodução Animal; Sêmen. |
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Thesaurus Nal: |
Artificial insemination; Cryopreservation; Frozen storage; Rams; Reproduction; Sheep; Spermatozoa. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02141naa a2200313 a 4500
001 1523097
005 2023-06-28
008 1996 bl uuuu u00u1 u #d
100 1 $aMAXWELL, W. M. C.
245 $aRecent progress in the preservation of ram semen.$h[electronic resource]
260 $c1996
520 $aAbstract: The processing and storage of ram semen reduce the motility and disrupt the membrane integrity of spermatozoa. It is generally assumed that these changes are detrimental and are associated with a loss of fertilising capacity. Despite many years of empirical research that has established a variety of methods for the processing, storage and insemination of spermatozoa, fertility is generally lower after cervical insemination with stored than fresh semen. The components of the sperm cell responsible for this low fertility are not clearly understood. However, recent evidence suggests that while many spermatozoa remain motile after storage, the membranes of the motile cells are destabilised to the point where they may not survive further ageing in the female tract after cervical insemination. These membrane changes are similar to the capacitation and acrosome reaction of spermatozoa. Thus, stored spermatozoa may require less capacitation time in the female tract, and may readily fertilise oocytes if placed in their immediate vicinity, as with in vitro fertilisation, tubal or even intrauterine insemination. It may be possible to prevent or reverse some of these membrane changes, for example using antioxidants, and thus improve fertility following cervical insemination of sheep.
650 $aArtificial insemination
650 $aCryopreservation
650 $aFrozen storage
650 $aRams
650 $aReproduction
650 $aSheep
650 $aSpermatozoa
650 $aArmazenamento
650 $aCriopreservação
650 $aEspermatozóide
650 $aInseminação Artificial
650 $aOvino
650 $aReprodução Animal
650 $aSêmen
653 $aPreservacao
700 1 $aWATSON, P. F.
773 $tAnimal Reproduction Science$gv. 42, n. 1/4, p. 55-65, 1996.
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| 1. |  | BUENO, N. R.; CASTILHO, R. O.; COSTA, R. B. da; POTT, A.; POTT, V. J.; SCHEIDT, G. N.; BATISTA, M. da S. Medicinal plants used by the Kaiowá and Guarani indigenous populations in the Caarapó Reserve, Mato Grosso do Sul, Brazil. Acta Botânica Brasilica, Brasília, DF, v. 19, n. 1, p. 39-44, 2005.| Biblioteca(s): Embrapa Gado de Corte. |
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