1. Laboratory of Semen Biotechnology and Andrology Department of Animal Reproduction School of Veterinary Medicine and Animal Science University of Sao Paulo (USP) Pirassununga Brazil
2. Laboratory of Research in Pathology of Reproduction Department of Animal Reproduction School of Veterinary Medicine and Animal Science University of Sao Paulo (USP) Pirassununga Brazil
3. Laboratory of Molecular Physiology and Endocrinology Department of Animal Reproduction School of Veterinary Medicine and Animal Science University of Sao Paulo (USP) Pirassununga Brazil
4. International Equine Breeding Center Rancho das Américas Porto Feliz Brazil
5. Laboratory of Animal Reproduction Department of Veterinary Clinics and Surgery Veterinary School Federal University of Minas Gerais Belo Horizonte Brazil