The t(1;29) translocation in Andalusian endangered autochthonous cattle breeds: influence in the general population

ANTONIO RODERO FRANGANILLO; SEBASTIÁN DEMYDA PEYRÁS; EVANGELINA RODERO SERRANO; ANA GONZALEZ MARTINEZ; MIGUEL MORENO MILLÁN

Krakow

Congreso; 19th Colloquium of Animal Cytogenetics and Gene Mapping; 2010

National research institute of animal production department of animal immuno and cytogenetics, Poland

Five of the minority Andalusian endangered cattle breeds have been used in order to study the influence of t1;29 translocation in the population, taking into account their population structures as a relatively isolated farming from the reproductive point of view. The total number of herds analyzed was 24 being 276 the number of animals tested. The origin of two of the analyzed breeds (Retinta and Berrenda en Colorado) corresponds to the Turdetano trunk according with different authors. To the Iberico trunk, through the Bos Taurus desertorum (Southeast of the Iberian Peninsula) belong the Negra Andaluza and the Berrenda en Negro. The Pajuna breed has influence from the Turdetano trunk (Retinta), Iberico trunk (Negra Andaluza) and from the Atlas African trunk, as shown in the fossils of Atapuerca (Burgos). In this study, we found that the 1;29 frequencies is variable as much from breed to breed, depending on the breed, the number of animals tested and/or if it has established a breeding program to eradicate the translocation, as the geographical location of the animals and the type of mating. Moreover, the analysis populational subdivision trough the Wright fixation index has shown that three of the five analysed breeds are in a moment in which it seems that the translocation is setting, which those not happen in the other two breeds. Other aspects are discussed.