[1] Nicolaus Copernicus Univ Torun, Inst Vet Med, Dept Basic & Preclin Sci, Lwowska 1, PL-87100 Torun, Poland
[2] Wroclaw Univ Environm & Life Sci, Fac Vet Med, Dept Reprod & Clin Farm Anim, PL-50366 Wroclaw, Poland
[3] Poltava State Agr Acad Poltava, Skovorody St 1-3, UA-36003 Poltava, Poltava Oblast, Ukraine
[4] Nicolaus Copernicus Univ Torun, Inst Vet Med, Dept Diagnost & Clin Sci, Lwowska 1, PL-87100 Torun, Poland