1. Institute of Physiology and Nutrition, Kaposvár Campus, Hungarian University of Agriculture and Life Sciences, Gesztenyés út 1, H-2053 Herceghalom, Hungary
2. Palital Feed Additives B.V., De Tweede Geerden 11, 5334 LH Velddriel, The Netherlands
3. Institute of Animal Sciences, Gödöllő Campus, Hungarian University of Agriculture and Life Sciences, Páter Károly utca 1, H-2100 Gödöllő, Hungary
4. Department of Animal Hygiene, Herd Health and Mobile Clinic, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary
5. Department of Biostatistics, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary
6. Bona Adventure Ltd., Peres utca 44, H-2100 Gödöllő, Hungary