González-Fernández, Lauro, - University of Porto, Centro de Estudos de Ciência Animal/ Instituto de Ciências, Tecnologias e Agroambiente; Campus Agrario de Vairão, Rua Padre Armando Quintas, 4485-661 Vairão, Portugal. - University of Extremadura, School of Veterinary Medicine, Research Group of Intracellular Signaling and Technology of Reproduction. (SINTREP), Av. de la Universidad s/n. 10003 Cáceres, Spain.