1. Department of Veterinary Medicine and Animal Production, University of Napoli Federico II, Naples, Italy
2. Department of Veterinary Sciences, University of Messina, Messina, Italy
3. Institute for the Animal Production System in the Mediterranean Environment, National Research Council, Portici, Italy
4. Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, University of Campania Luigi Vanvitelli, Caserta, Italy