1. Department of Animal Physiology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, 949 76, Nitra, Slovak Republic
2. Research Institute for Animal Production Nitra, National Agricultural and Food Centre, 951 41 Luzianky, Slovak Republic;
3. Department of Biochemistry and Biotechnology, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra, 949 76, Nitra, Slovak Republic;
4. Research Centre AgroBioTech Slovak University of Agriculture in Nitra, Nitra 949 76, Slovak Republic