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Research Project: National Animal Germplasm Program

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Title: Merging molecular data for evaluating cross country genetic diversity of pigs.

Author
item IBEKA, C - Colorado State University
item Blackburn, Harvey
item PAIVA, S - Embrapa
item MARIANTE, A - Embrapa

Submitted to: Symposium Proceedings
Publication Type: Proceedings
Publication Acceptance Date: 8/1/2014
Publication Date: 8/17/2014
Citation: Ibeka, C.O., Blackburn, H.D., Paiva, S.R., Mariante, A. 2014. Merging molecular data for evaluating cross country genetic diversity of pigs.. Symposium Proceedings. orld Congress of Genetics Applied to Livestock Production, Vancouver, Canada, August 17-22, 2014.

Interpretive Summary:

Technical Abstract: Integration of molecular data generated by microsatellite panels recommended by FAO around the world should be initiated in order to accomplish objectives stated in the Global Plan of Action for Animal Genetic Resources. To that end microsatellite datasets from U.S. (n=179, including imported Chinese breeds) and Brazil (n=204) pig breeds were merged and the genetic diversity compared using 14 microsatellite markers. MICROMERGE software successfully combined 12 of 14 markers with posterior probabilities exceeding minimum criteria. Global Fst of 21% was observed, suggesting a high degree of population segregation. STRUCTURE analysis with K=4 indicated geographic separation of breed types into BR, U.S. and Chinese groups. Cluster number K=9 provided insight into the within and among country genetic diversity. The ease and effectiveness with which the data was combined suggest countries can share and co-analyze preexisting data to maximizing previous investments.