EXPERIMENTAL
IAR is Impaired Acrosomal Reaction - genetic inheritance is still under investigation
This gene impairs fertility - studies so far have only been carried out on males - IAR horses can reproduce but very erratically. .
There are two mutaions
Etalon is testing for this on an experimental basis - if you have a horse with fertility issues contact them and see if you can be involved in their research project.
Test Results look like this:
/-, -/+ One IAR Subfertility allele detected - NO KNOWN EFFECT
-/+, -/+ Two IAR Subfertiliy alleles detected - NO KNOWN EFFECT
+/+, +/- Three IAR Subfertility alleles detected - NO KNOWN EFFECT
+/+, +/+ Four IAR Subfertility alleles detected - MAY BE AFFECTED