1. Department of Biophysics, Faculty of Environmental Biology , University of Life Sciences in Lublin , Lublin , Poland
2. Department of Animal Physiology, Faculty of Veterinary Medicine , University of Life Sciences in Lublin , Lublin , Poland
3. Department of Animal Nutrition and Feed Science , National Research Institute of Animal Production , 32-083 Balice n. Kraków , Poland
4. Institute of Biological Basis of Animal Production, Faculty of Animal Sciences and Bioeconomy , University of Life Sciences in Lublin , Lublin , Poland
5. Bohdan Dobrzański Institute of Agrophysics of the Polish Academy of Sciences , Lublin , Poland
6. School of Physiology, Faculty of Health Sciences , University of the Witwatersrand , Parktown, Johannesburg , South Africa