1. Department of Animal Science, College of Agriculture, University of Guilan, Iran
2. Department of Animal Science, Rasht Branch, Islamic Azad University, Iran
3. Department of Veterinary Science, University of Trás-os-Montes e Alto Douro, Portugal
4. Department of DETO, Section of Veterinary Science and Animal Production, University of Bari ‘Aldo Moro’, Italy