[en] Described in the present paper is a culture system that preserves oocyte and granulosa cell morphology in bovine preantral follicles during 5 d in vitro. The effects of additional hypoxanthine and energy substrata (i.e., pyruvate and glutamine) on the morphology of cultured preantral follicles were investigated. It was shown that addition of a mixture of pyruvate, glutamine and hypoxantine to the culture medium increased the percentage of follicles with an intact oocyte from 29.4 to 78.6%. Morphological criteria are described to discriminate between normal and degenerated preantral follicles during culture by inverted microscopy. In addition, the importance of histological evaluation to judge the quality of oocyte and granulosa cells is demonstrated.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Figueiredo, J. R.; Université de Liège - ULiège
Hulshof, S. C.; University of Utrecht - The Netherlands > Functional Morphology
Van den Hurk, R.; University of Utrecht - The Netherlands > Functional Morphology
Nusgens, Betty ; Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Protéines et glycoprot. de matr.extracell. et membran.basal.
Bevers, M. M.; University of Utrecht - The Netherlands > Heard Health and Reproduction
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