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    Evolutionary Relationship Among Three Native and Two Crossbreed Sheep Breeds of Turkey : Preliminary Results
    (2005) Soysal, M. I.; Koban, Evren; Ünal, Özkan Emel; Altunok, Vahdettin; Bulut, Z.; Nizamlioglu, M.; Togan, I.
    The Turkish native sheep breeds, possibly being the neighbours of the earliest domesticated sheep populations, might be harbouring important genetic characteristics to be employed in the future for the improvement of sheep breeds. In order to design a conservation strategy, their genetic diversities must be determined. In the present study, based on three microsatellite loci, the genetic diversity of the Kivircik, Awassi, Akkaraman breeds (native) of Turkey as well as two of their crossbreeds Türkgeldi and Konya Merino were studied comparatively. It was observed that their heterozygoties are all high (0.6673-0.7822) compared to previously studied breeds, as expected for populations close to the center of domestication. Neighbour Joining (NJ) tree based on allele sharing distances indicated that the inertia of the breeds are not high. Yet, the genetic differentiations between the breeds based on pairwise FST (inbreeding coefficient) values are all significant. Furthermore, the three microsatellite loci could distinguish three groups of native breeds and their crossbreeds; 1) Awassi, 2) Kivircik-Türkgeldi and 3) Akkaraman-Konya Merino.
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    Evolutionary relationship among three native and two crossbreed sheep breeds of Turkey: preliminary results
    (ECOLE NATIONALE VETERINAIRE TOULOUSE, 2005) Soysal, M. İhsan; Koban, Evren; Özkan, Emel; Altunok, Vahdettin; Bulut, Zafer; Nizamlıoğlu, Mehmet; Togan, İnci
    The Turkish native sheep breeds, possibly being the neighbours of the earliest domesticated sheep populations, might be harbouring important genetic characteristics to be employed in the future for the improvement of sheep breeds. In order to design a conservation strategy, their genetic diversities must be determined. In the present study, based on three microsatellite loci, the genetic diversity of the Kivircik, Awassi, Akkaraman breeds (native) of Turkey as well as two of their crossbreeds Turkgeldi and Konya Merino were studied comparatively. It was observed that their heterozygoties are all high (0.6673-0.7822) compared to previously studied breeds, as expected for populations close to the center of domestication. Neighbour Joining (NJ) tree based on allele sharing distances indicated that the inertia of the breeds are not high. Yet, the genetic differentiations between the breeds based on pairwise F-ST (inbreeding coefficient) values are all significant. Furthermore, the three microsatellite loci could distinguish three groups of native breeds and their crossbreeds; 11) Awassi, 2) Kivircik-Turkgeldi and 3) Akkaraman-Konya Merino.
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    Genetic evidence for the distinctness of Kangal dogs
    (NATL VETERINARY RESEARCH INST, 2005) Altunok, Vahdettin; Koban, Evren; Chikhi, L.; Schaffer, A.; Pedersen, N. C.; Nizamlıoğlu, Mehmet; Togan, İnci
    The genetic diversity of Kangal dogs (n=23) was analysed using 100 canine microsatellites, and the results were compared to Central Anatolian feral dogs (n=51), Akbash dogs (n=6), and Turkish greyhounds (TG, n=3). The Kangal, Akbash, Turkish greyhound and feral dogs were found to be significantly different from each other by F-ST measure. Factorial Correspondence Analysis (FCA), which evaluated the span of genotypic variation between individual dogs, yielded 4 distinct groups of the animals. Group I was composed of 12 pure Kangal dogs (Kangal I) without the Kangal looking hybrids of Kangals and feral dogs. Group II contained the remaining 11 Kangal dogs (Kangal II), 1 Turkish greyhound, and all feral dogs except for one. Group III was comprised of the remaining 2 Turkish greyhounds, while Group IV consisted of all of the Akbash dogs. Kangal I, Akbash and Turkish greyhound groups were scattered in different parts of the three-dimensional FCA plot. We conclude that Kangal dogs are genetically distinct and hence they deserve to be identified as a breed. Furthermore, it has been observed that microsatellites can be employed in the conservation efforts of Kangals.