1. Department of Fur‐bearing Animal Breeding and Game Management, Faculty of Animal Bioengineering University of Warmia and Mazury Olsztyn Poland
2. Department of Animal Genetics, Faculty of Animal Bioengineering University of Warmia and Mazury Olsztyn Poland
3. Department of Animal Nutrition and Feed Science, Faculty of Animal Bioengineering University of Warmia and Mazury Olsztyn Poland