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    Parentage verification and genetic diversity of the Arabian and Thoroughbred horse populations in Türkiye using microsatellite analysis
    (Gesellschaft Schweizer Tierarztinnen & Tierarzte, 2023) Yarali, Cevdet; Ozsensoy, Yusuf; Koseman, Abdurrahman; Seker, Ibrahim; Toprak, Burhan; Zengin, Kemal
    This study aimed to determine the effectiveness of parentage verification in Arabian and Thoroughbred horses in Turki-ye using microsatellite markers. A total of 813 Arabian and 959 Thoroughbred horses were genotyped using a total of 17 microsatellite markers. The mean effective number of alleles was 3,34 and the mean number of alleles was 7,41 in Arabian horses. It was calculated that the mean He and Ho values in Arabian horses were 0,677 and 0,680, respective-ly. The mean effective number of alleles was 3,55 and the mean number of alleles was 6,59 in Thoroughbred horses. It was calculated that the mean Ho and He values in Thor-oughbred horses were 0,697 and 0,684, respectively. When the studied Arabian and Thoroughbred horse populations are considered as a single population, the mean FIT, FST and FIS values were found to be 0,063, 0,074 and, - 0,011, re-spectively. Also, 4 loci in Arabian horses and 3 loci in Thor-oughbred horses significantly deviated from HWE. The mean PIC value was 0,63 in Arabian horses and 0,64 in Thoroughbred horses. As a result; the microsatellites includ-ing the most informative 15 and 9 loci had a total value of > 0,9999 (11 and 7 loci > 0,999) in each population for PE - 1 and PE - 3, respectively. It has been concluded that parentage verification and genetic identification can be made successfully in the Arabian and Thoroughbred horse populations by using the microsatellite markers panel.
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    Phylogenetic and bottleneck analysis of the Turkish Arabian and Thoroughbred horse populations
    (Univ Zulia, Facultad Ciencias Veterinarias, 2023) Yarali, Cevdet; Koseman, Abdurrahman; Ozsensoy, Yusuf; Seker, Ibrahim; Toprak, Burhan; Zengin, Kemal
    This study aimed to determine the phylogenetic and bottleneck analyses of Turkish Thoroughbred and Arabian horse populations. In the study, genotyping was performed using a total of 17 microsatellite markers in the samples taken from 959 Thoroughbred and 813 Arabian horses. The average effective allele number in Arabian horses was 3.338 and the average number of alleles was 7.412 in Thorougbred horses. Genetic distance and genetic identity between Thoroughbred and Arabian breeds was 0.411 and 0.663, respectively. Also genetic identity in each Arabian and Thoroughbred horse populations was 1.000. The FCA table showed that the two breeds were completely separated from each other and were compatible. In conclusion; the bottlenecks of Thoroughbred and Arabian horse populations were in a normal L distribution and these horse breeds do not appear to have succumbed to introgression. Therefore, they are not yet at risk of extinction any time soon.