1. 1 Department and Clinic of Animal Reproduction, Faculty of Veterinary Medicine, University of Life Sciences , Lublin , Poland
2. 2 Prevent – Veterinary Practice , Lubowidz , Poland
3. 3 University of Agricultural Sciences and Veterinary Medicine , Cluj-Napoca , Romania
4. 4 Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences , Lublin , Poland