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Origin of Hungarian indigenous chicken breeds inferred from mitochondrial DNA D-loop sequences.

In this study, we assessed the maternal origin of six Hungarian indigenous chicken breeds using mitochondrial DNA information. Sequences of Hungarian chickens were compared with the D-loop chicken sequences annotated in the GenBank and to nine previously described reference haplotypes representing the main haplogroups of chicken. The first 530 bases of the D-loop region were sequenced in 74 chickens of nine populations. Eleven haplotypes (HIC1-HIC11) were observed from 17 variable sites. Three sequences (HIC3,HIC8 and HIC9) of our chickens were found as unique to Hungary when searched against the NCBI GenBank database. Hungarian domestic chicken mtDNA sequences could be assigned into three clades and probably two maternal lineages. Results indicated that 86%of the Hungarian haplotypes are related to the reference sequence that likely originated from the Indian subcontinent, while the minor part of our sequences presumably derive from South East Asia, China and Japan.