1. Department of Animal Health and Environment, Estonian University of Life Sciences, Kreutzwaldi, Tartu, Estonia
2. Department of Animal Environment and Health, Swedish University of Agricultural Sciences, Skara, Sweden
3. Department of Nutrition, Estonian University of Life Sciences, Kreutzwaldi, Tartu, Estonia
4. Department of Animal Genetics and Breeding, Estonian University of Life Sciences, Kreutzwaldi, Tartu, Estonia