Genetic structure of Iranian indigenous sheep breeds: insights for conservation
| Autor: | Hojjat Asadollahpour Nanaei, Saeed S. Sohrabi, Ahmad Ayatollahi Mehrgardi, Alireza Abdolmohammadi, O. Ruiz-Larrañaga, Hamed Kharrati-Koopaee, C. Manzano, Andone Estonba, Mikel Iriondo, Fernando Rendo, Ali Esmailizadeh, Iratxe Montes |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Conservation of Natural Resources
Genotype 040301 veterinary sciences Population Endangered species Zoology Biology Iran Crossbreed 0403 veterinary science Food Animals Animals education Domestication Genetic diversity education.field_of_study Sheep business.industry 0402 animal and dairy science Genetic Variation 04 agricultural and veterinary sciences 040201 dairy & animal science Breed Genetic structure Hybridization Genetic Animal Science and Zoology Livestock business human activities Microsatellite Repeats |
| Zdroj: | Tropical animal health and production. 52(5) |
| ISSN: | 1573-7438 |
| Popis: | Genetic structure and genetic diversity levels of indigenous Iranian sheep breeds are not clear, despite the interest this region has in itself as an important center for domestication of livestock. Early population genetic studies have reported high levels of diversity among Iranian sheep breeds until recently, when high admixture levels and genetic homogeneity have been detected. The rapid reduction of diversity observed in Iranian breeds might be due to an increasing trend of intensive crossbreeding practices or even total replacement of native breeds by highly specialized and productive ones. From a conservative perspective, this situation is highly concerning; thus, it might be wise to consider a conservation program in Iran to preserve the original genetic diversity in native sheep breeds. In this study, a total of 1065 animals with the purest morphological features representing 24 Iranian indigenous sheep breeds were sampled, corresponding to ancestral breed diversity. These samples were genotyped for 17 microsatellite loci in order to (1) determine the native ancestral diversity of Iranian breeds, (2) define the degree of genetic relationship among studied breeds, and (3) assess conservation priorities among defined groups. Our results showed no recent loss of diversity, but high genetic diversity levels for indigenous sheep breeds in Iran. Indeed, the analysis of conservation priorities pointed out the importance of 8 breeds for maintaining Iranian sheep breeds' maximum genetic diversity. Thus, under a genetic perspective, these 8 breeds should be the ones included into conservation programs for restocking endangered areas. |
| Databáze: | OpenAIRE |
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