1. Department of Livestock Population Genomics, University of Hohenheim, Institute of Animal Science, Stuttgart, Germany
2. Department of Animal Sciences, Aksum University, Shire, Ethiopia
3. Department of Animal Breeding and Husbandry in the Tropics and Subtropics, University of Hohenheim, Institute of Agricultural Sciences in the Tropics, Stuttgart, Germany
4. University of Hohenheim, Apicultural State Institute, Stuttgart, Germany