EFFECT of CUMULUS CELLS and MATURATION CULTURE PERIOD of OOCYTES on THE SEX RATIO of IN VITRO-FERTILIZED BOVINE EMBRYOS - Mingoti, Gisele Zoccal [UNESP]; Leao, B. C. S. [UNESP]; Gottardi, F. P. [UNESP]; Alonso, R. -V. [UNESP] (CSIRO Publishing, 2010)