1. Department of Agri-Food Production and Environmental Sciences; Section of Animal Sciences, University of Firenze; Via delle Cascine 5 50144 Firenze Italy
2. Department of Animal Medicine; Production and Health, University of Padova; Viale dell'Università 16 35020 Legnaro Padova Italy
3. Agriculture Academy of Torino; Via A. Doria 10 10123 Torino Italy
4. Institute of Food and Agricultural Product Qualification; University of Kaposvár; Hungary
5. Department of Biology; Norwegian University of Science and Technology; Trondheim Norway
6. Institute of Marine Research Matre; 5984 Matredal Norway