engleski

Genetic Diversity Of Autochthonous Cattle Breeds: Implications On Conservation Strategy

Managing genetic diversity is one of the basic conservation goals for autochthonous, especially endangered breeds. In this study, we analyzed two endangered autochthonous cattle breeds (Istrian and Slavonian-syrmian podolian cattle). The high average relatedness coefficient was found in Slavonian-syrmian podolian cattle (9.11) suggesting on problem in maintenance of genetic variability. Microsatellite analysis indicates relatively high average numbers of alleles per marker (6.52) in Istrian, in regard to Slavonian-syrmian podolian cattle (4.90). Level of observed heterozygosity wasn’t significantly different, but expected heterozygosity was significantly higher in Istrian in regard to Slavonian-syrmian podolian cattle (0.663 : 0.572). Estimated level of inbreeding was significantly higher in Istrian cattle (0.112), in regard to Slavonian-syrmian podolian cattle (-0.016). The 783-bp fragment of the mtDNA D-loop region was sequenced and 22 polymorphic sites were observed. Mean number of nucleotide differences within sequence Istrian cattle was significant higher (3.111) than sequence in Slavonian-syrmian podolian cattle (1.805).

genetic diversity; autochthonous breeds; cattle; conservation strategy

nije evidentirano