1. Department of Agriculture, International Hellenic University, 57400 Thessaloniki, Greece
2. School of Economics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
3. Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, P.O. Box 50329, Limassol 3036, Cyprus
4. Laboratory of Animal Breeding and Husbandry, Department of Animal Science, Agricultural University of Athens, 11855 Athens, Greece