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A new ge­netic test for a form of dwarfism in Minia­ture Horses is now avail­able from the Univer­sity of Ken­tucky’s An­i­mal Ge­netic Test­ing and Re­search Lab­o­ra­tory.

The test iden­ti­fies car­ri­ers of four mu­ta­tions in the ag­gre­can gene, which con­trols pro­teins crit­i­cal to the de­vel­op­ment of car­ti­lage struc­tures. The mu­ta­tions may re­sult in a range of phys­i­cal is­sues, in­clud­ing res­pi­ra­tory prob­lems, oral mal­for­ma­tions and ab­nor­mal bone growth.

Re­searchers say car­ri­ers of the mu­tated gene may not ex­hibit any out­wards signs, but when two car­ri­ers are mated, the re­sult can be a foal af­fected with any com­bi­na­tion of the genes, some of which are lethal.

The new test does not iden­tify all forms of dwarfism in Minia­ture Horses or forms found in other breeds. For more in­for­ma­tion about the test, visit the lab­o­ra­tory’s web­site or call 859-218-1193.

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