TDK conference 2014

The research of the mitochondrial DNA of the cow families of the Hungarian grey cattle breed was an important milestone for the phylogenetic origin of this breed. The examination of the genetically elements, mtDNA in the Hungarian Grey cows expanded our knowledge about the origins of the breeds. The non-recombining elements of Y chromosome –STR and sequential polymorphisms- were used in our study.

In our research we search new informations for the origins of the bovine breeds by the examination of the Y chromosome polymorphisms in the Hungarian Grey bulls.

The founders were used to represent a breeding lines. It was easier to find what we searched for because the male population is always smaller then the female so these breeding lines have higher attention. When we found the bulls of the breeding lines we asked blood sample from the sample bank of National Food Chain Safety Office (NFCSO)'s with the agreement of the Hungarian Grey Breeding Association. Every bull lineage was represented by two bulls from the same lineage but from deepest junction.

Three microsatellites and five polymorph non recombinating part of the Y chromosome which was widely used in publications were used in the study.

The results are representing the typical diversity values of european Y chromosome haplotypes and alleles, which were published before.

The Y chromosome correlated to the mtDNA is lower which result is matching to those in the literature.

After the second World War the bottleneck effect of the Hungarian grey didn't change a lot but that is a guess thanks to the burning of the breeding registers.