1Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA), Madrid, Spain; 2Reproductive Biotechnology Laboratory, School of Biosciences, Science Faculty, National University of Colombia. Medellín, Colombia; 3Department of Veterinary Medicine, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga, Brazil, 4Department of Anatomy and Embriology, Veterinary Faculty, Complutense University of Madrid (UCM), Madrid, Spain.
