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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: |
13/05/2013 |
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Data da última atualização: |
17/01/2024 |
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Autoria: |
SILVA, J. C. B.; OKABE, W. K.; TRALDI, A. S. |
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Título: |
From cattle to sheep: a view of the difficulties and success of commercial in vitro production of sheep embryos. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Animal Reproduction, Belo Horizonte, v. 9, n. 3, p. 195-200, Jul./Sept. 2012. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: The in vitro production (IVP) of sheep embryos, unlike that for cattle, requires hormonal treatment with progesterone or a progestagen to improve efficiency of ovum pick-up (OPU). Another difference is that the process used to obtain oocytes is by OPU in cattle and LOPU (laparoscopic ovum pickup) in sheep. Several factors affect oocyte recovery, including the skill of the technician, suction pressure and the aspiration system for LOPU. The LOPU technique is less invasive and can be performed weekly, biweekly or monthly in ewes. LOPU is an option to MOET (multiple ovulation and embryo transfer), mainly for animals of high genetic value that do not respond to the superovulatory treatment or only produce unfertilized oocytes. The embryos in the initial development stages can be transferred into the oviduct or into the cranial portion of lumen of the uterine horn, reducing the time for in vitro culture, which can be harmful to embryos. Although early results are promising, there are still many points to be improved in IVP of sheep embryos before it is used extensively in the commercial sheep industry. |
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Palavras-Chave: |
Cultivo in vitro; IVP; LOPU; Oócitos. |
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Thesagro: |
Embrião animal; Ovário; Ovino; Reprodução animal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01834naa a2200241 a 4500
001 1957663
005 2024-01-17
008 2012 bl uuuu u00u1 u #d
100 1 $aSILVA, J. C. B.
245 $aFrom cattle to sheep$ba view of the difficulties and success of commercial in vitro production of sheep embryos.$h[electronic resource]
260 $c2012
520 $aAbstract: The in vitro production (IVP) of sheep embryos, unlike that for cattle, requires hormonal treatment with progesterone or a progestagen to improve efficiency of ovum pick-up (OPU). Another difference is that the process used to obtain oocytes is by OPU in cattle and LOPU (laparoscopic ovum pickup) in sheep. Several factors affect oocyte recovery, including the skill of the technician, suction pressure and the aspiration system for LOPU. The LOPU technique is less invasive and can be performed weekly, biweekly or monthly in ewes. LOPU is an option to MOET (multiple ovulation and embryo transfer), mainly for animals of high genetic value that do not respond to the superovulatory treatment or only produce unfertilized oocytes. The embryos in the initial development stages can be transferred into the oviduct or into the cranial portion of lumen of the uterine horn, reducing the time for in vitro culture, which can be harmful to embryos. Although early results are promising, there are still many points to be improved in IVP of sheep embryos before it is used extensively in the commercial sheep industry.
650 $aEmbrião animal
650 $aOvário
650 $aOvino
650 $aReprodução animal
653 $aCultivo in vitro
653 $aIVP
653 $aLOPU
653 $aOócitos
700 1 $aOKABE, W. K.
700 1 $aTRALDI, A. S.
773 $tAnimal Reproduction, Belo Horizonte$gv. 9, n. 3, p. 195-200, Jul./Sept. 2012.
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