1. Animal Science Department Agricultural Institute of Slovenia Ljubljana Slovenia
2. Behavioral Physiology of Livestock Institute of Animal Science University of Hohenheim Stuttgart Germany
3. German Genetic Schweinezuchtverband Baden‐Württemberg e.V. Stuttgart Germany
4. Department of Animal Science Faculty of Agriculture and Life Sciences University of Maribor Hoče Slovenia
5. Institute of Preclinical Sciences Veterinary Faculty University of Ljubljana Ljubljana Slovenia