Possible common maternal origin of two hen populations: preliminary results of mitochondrial DNA analysis | Posible origen materno común de dos poblaciones de gallinas: resultados preliminares del análisis del ADN mitocondrial
2011
Grimal, A., Centro de Investigación y Tecnología Animal, Castellón (España) | Viudes de Castro, M.P., Centro de Investigación y Tecnología Animal, Castellón (España) | Gómez, E.A., Centro de Investigación y Tecnología Animal, Castellón (España) | Goyache, F., Servicio Regional de Investigación y Desarrollo Agroalimentario, Villaviciosa (España). Centro de Biotecnología Animal | Royo, L.J., Servicio Regional de Investigación y Desarrollo Agroalimentario, Villaviciosa (España). Centro de Biotecnología Animal
Traditionally farmers refer to Mediterranean and Atlantic stocks to differentiate between populations in order to guarantee the different origins of the breeds. The most probable wild progenitor of the domestic chicken belongs to the genus Gallus. Archaeological discovers suggest that chickens were probably domesticated from the Red Jungle Fowl (Gallus gallus). Previous phylogenetic analyses with 834 domestic chicken (Gallus gallus domestic) by analysing the mitochondrial DNA hipervariable segment I (HVS-I) revealed nine highly divergent mtDNA clades, with no breed-specific clade. Twenty Chulilla hens, belonging to a Mediterranean stock and fifteen Pita Pinta Asturiana hens belonging to an Atlantic stock were studied. HVS-I was sequenced, analysed and compared with GenBank sequences in order to ascribe the individuals to one of the nine clades. The 35 sequences gave 22 haplotypes. Mostly, both breeds clustered in clade E, as observed in other domestic European populations. This preliminary study reveals the same maternal origin from those breeds, spite their phenotypic differentiation.
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