Abstract
The objective of the present study was to compare the rate of embryo cleavage after oocyte insemination with capacitated spermatozoa in the presence or absence of follicular fluid. In the first experiment, a total of 67 oocytes were inseminated with spermatozoa which had been submitted to part of the capacitation procedures in the presence of follicular fluid (21 oocytes) and with spermatozoa capacitated only with Menezo B2 culture medium (46 oocytes). Thirteen and 29 cleaved embryos were obtained, respectively (p = 0.89). In the second experiment, a total of 61 oocytes were inseminated with spermatozoa submitted to the entire capacitation procedure in follicular fluid (17 oocytes) and capacitated only with Menezo B2 culture medium (44 oocytes). Eleven and 31 cleaved embryos were obtained, respectively (p = 0.67). The absence of significant differences in cleavage rate between the two experiments indicates that the quality of the spermatozoa capacitation process is not changed by the addition of follicular fluid.
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