1. Laboratory of Organic Food Production of Animal Origin; Department of Breeding and Protection of Cattle Genetic Resources; Faculty of Biology, Animal Sciences and Bioeconomy; University of Life Sciences in Lublin; Akademicka 13 20-950 Lublin Poland
2. Department of Commodity Science and Processing of Raw Animal Materials; Faculty of Biology, Animal Sciences and Bioeconomy; University of Life Sciences in Lublin; Akademicka 13 20-950 Lublin Poland