METİN ERDOĞAN, CEVDET UĞUZ, Ahmet KOPAR, CEYHAN ÖZBEYAZ

Genetic variability among Arabian horses in Turkey

Türkiye’de farklı haralarda ve halkelinde yetiştirilen toplam 4067 Arap atı arasındaki genetik farklılıklar ve genetik ilişkiler 16 lokus (5 kan grubu ve 11 protein lokusu) yardımıyla incelendi. FIT (0.019) ve FST (0.034) değerleri pozitif, FIS değeri ise negatif (-0.015) tahmin edilmiştir. Populasyonlar arasIndaki bu farklIlIklar önemli bulunmuştur (P

Anahtar Kelimeler:

istatistiksel analizler, Arap atı, kümeleme analizi, gen akışı, genetik uzaklık, genetik farklılık, genetik çeşitlilik, heterozigotluk, at ırkları

Türkiye'deki Arap atları arasındaki genetik farklılıklar

The genetic variability within the Arabian horses and its relationship between three different national studs in Turkey was evaluated using 16 loci (five of blood groups and eleven protein polymorphisms) analyzed in 4055 Arabian horses. The FIT (0.019) and FST (0.034) values estimated for over all loci were positive, while FIS (-0.015) value was negative. The differences among population were found to be statistically significant (P<0.001). The estimated FST for all loci indicated that 3.4% of total genetic variation was originated from the differences among population, whereas 96.7% of genetic variation was originated from the differences among individuals. Genetic diversity computed as FST (0.034) is found to be statistically significant among populations (P<0.001). The gene flows occurred between populations within each generation was ranged from 4.47 for Karacabey and Private Farms and to 16.42 for Çifteler and Sultansuyu studs. The estimated mean gene flow was 7.1 for each generation among populations. According to dendogram, horses in Çifteler and Sultansuyu are forming a group and then Karacabey studs as well as national farms are joining into this group. In conclusion, there is indicated considerably high gene flow among national studs, especially between Çifteler and Sultansuyu. The reason for genetic diversity between horse population in private farms and three national studs may be due to the low genetic flow from these three national studs to private farms.

Keywords:

statistical analysis, Arab, cluster analysis, gene flow, genetic distance, genetic diversity, genetic variation, heterozygosity, horse breeds,

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