1. Department of Pig Breeding and Biotechnology, 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