**Author details**

Rita Payan-Carreira1\*, Paulo Borges1,2, Fernando Mir2 and Alain Fontbonne2

\*Address all correspondence to: rtpayan@gmail.com

1 CECAV [Veterinary and Animal Research Centre] – University of Trás-os-Montes and Alto Douro, Vila Real, Portugal

2 CERCA (Centre d'Études en Reproduction des Carnivores), Animal Reproduction, National Veterinary School of Alfort, Paris-East University, France
