Robertsonian translocation (centric fusion) is one of the most frequent types of chromosome aberrations found in cattle. Observing the health state of a group of dairy cows in the fallout region of a metallurgical plant, centric fusion of chromosomes was discovered in one animal. Chromosome fusion is supposed within pairs 13-24 (dicentric translocation). Although the finding was started in a commercial flock, it is rather interesting from the viewpoint of the R. translocation type and because of the fact that the father of this dairy cow (bull NOM-37) had been used in insemination for several years and his semen is still preserved for further use.

Research Institute of Experimental Veterinary Medicine Kosice Slovak Republic