Article (Scientific journals)
Intrinsic quality of goat oocytes already found denuded at collection for in vitro embryo production.
Souza-Fabjan, Joanna Maria Gonçalves; Locatelli, Yann; Duffard, Nicolas et al.
2016In Theriogenology, 86 (8), p. 1989 - 1998
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Keywords :
Blastocyst; Cumulus cells; In vitro fertilization; In vitro maturation; Ovum pickup; Animals; Blastocyst/physiology; Cumulus Cells; Embryo Culture Techniques/veterinary; Embryonic Development/physiology; Female; Fertilization in Vitro/veterinary; Goats/embryology; In Vitro Oocyte Maturation Techniques/veterinary; Oocytes/physiology; Tissue and Organ Harvesting/veterinary; Embryo Culture Techniques; Embryonic Development; Fertilization in Vitro; Goats; In Vitro Oocyte Maturation Techniques; Oocytes; Tissue and Organ Harvesting; Small Animals; Food Animals; Animal Science and Zoology; Equine
Abstract :
[en] Although cumulus cells are essential for efficient oocyte maturation, the establishment of protocols that support IVD of embryos obtained from denuded oocytes (DOCs) is important for optimizing the use of reproductive biotechnologies. Thus, this study aimed to establish a protocol for IVD of goat DOC using different strategies of IVM and methods of oocyte activation. Four experiments were performed. Similar developmental competence of slaughterhouse DOC was obtained, regardless of maturation media (complex, semidefined or simplified). However, the ability to reach the blastocyst stage was affected by the activation method. Denuded oocytes subjected to parthenogenetic activation had greater (P < 0.05) development capacity, compared with those undergoing IVF with average cleavage rate of 83% and 75%, blastocyst rate of 49% and 28%, and blastocysts in relation to the cleaved embryos of 59% and 38, respectively. In addition, the quality of embryos evaluated after vitrification/warming was similar between parthenogenetic activation and IVF. Finally, we demonstrated that the coculture of cumulus-oocyte complex (COC) with DOC increased the competence of DOC at a ratio of 1:1 and 1:9 (DOC:COC). We believe that presence of cumulus cells (CCs) is not essential to the meiotic maturation, if at the time of removal of the oocyte from follicular environment, they already acquired competence to development. However, when the oocytes still need to acquire competence, the presence of CC may significantly contribute in their developmental capacity acquisition during IVM. Thus, regardless of the source, these oocytes will require longer time in IVM, contrary to what happens in the absence of CC. In conclusion, although DOC had a lower developmental potential, especially after IVF, they were able to produce blastocysts and the coculture of DOC with COC increased this developmental capacity.
Disciplines :
Animal production & animal husbandry
Author, co-author :
Souza-Fabjan, Joanna Maria Gonçalves;  INRA, UMR7247, Physiologie de la Reproduction et des Comportements, INRA, CNRS, Université de Tours, Haras Nationaux, Nouzilly, France, Laboratory of Physiology and Control of Reproduction, Veterinary School, State University of Ceará, Fortaleza, CE, Brazil. Electronic address: joannavet@gmail.com
Locatelli, Yann;  INRA, UMR7247, Physiologie de la Reproduction et des Comportements, INRA, CNRS, Université de Tours, Haras Nationaux, Nouzilly, France, Museum National d'Histoire Naturelle, Réserve de la Haute Touche, Obterre, France
Duffard, Nicolas;  INRA, UMR7247, Physiologie de la Reproduction et des Comportements, INRA, CNRS, Université de Tours, Haras Nationaux, Nouzilly, France, Museum National d'Histoire Naturelle, Réserve de la Haute Touche, Obterre, France
Corbin, Emilie;  INRA, UMR7247, Physiologie de la Reproduction et des Comportements, INRA, CNRS, Université de Tours, Haras Nationaux, Nouzilly, France
Batista, Ribrio Ivan Tavares Pereira;  Laboratory of Physiology and Control of Reproduction, Veterinary School, State University of Ceará, Fortaleza, CE, Brazil
de Figueirêdo Freitas, Vicente José;  Laboratory of Physiology and Control of Reproduction, Veterinary School, State University of Ceará, Fortaleza, CE, Brazil
Beckers, Jean-François  ;  Université de Liège - ULiège > Département des sciences fonctionnelles (DSF)
Mermillod, Pascal;  INRA, UMR7247, Physiologie de la Reproduction et des Comportements, INRA, CNRS, Université de Tours, Haras Nationaux, Nouzilly, France
Language :
English
Title :
Intrinsic quality of goat oocytes already found denuded at collection for in vitro embryo production.
Publication date :
November 2016
Journal title :
Theriogenology
ISSN :
0093-691X
eISSN :
1879-3231
Publisher :
Elsevier Inc., United States
Volume :
86
Issue :
8
Pages :
1989 - 1998
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
CAPES-COFECUB
Funders :
Région Center
Funding text :
This work was supported by a grant from Région Center , France (PIVER program, #200800030493, 2008–2011) and from CAPES-COFECUB bilateral framework (grant 728/11 , 2011–2014).J.M.G. Souza-Fabjan was supported by CAPES and Ceará State University. The authors wish to thank CAPES-COFECUB bilateral framework for financial support of collaboration between the Ceará State University and INRA on goat IVP (grant 728/11, 2011–2013).
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