1. Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, State University of Ceara, Fortaleza, Ceara, Brazil
2. Department of Physiology, Veterinary Faculty, University of Murcia, Murcia, Spain
3. Laboratory of Reproduction Biotechnology (Biotech), Campus Uruguaiana, Federal University of Pampa, Uruguaiana, Rio Grande do Sul, Brazil
4. Laboratory of Reproductive Biology, Institute of Biomedical Sciences, Federal University of Uberlandia, Uberlandia, Minas Gerais, Brazil
5. Laboratory of Electrophysiology (LEF), Superior Institute of Biomedical Sciences, State University of Ceara, Fortaleza, Ceara, Brazil
6. Department of Animal Science, Food and Nutrition, Southern Illinois University, Carbondale, IL, USA