The Australian Wagyu Association (AWA), announced the implementation of testing for the new IARS Disorder to Members, Monday 17 August.
IARS is a genetic recessive condition where animals carrying two copies of the causative IARS SNP mutation (affected animals) have a high frequency of embryonic death during gestation or the first few days of life. This condition is also known as perinatal weak calf syndrome. Read more
AWA Members have conducted approximately 90,000 genomics tests in the past three years. Analysis of the SNP on the different genomics chips used by AWA members identified that the profiles of half of these contained the SNP that is used for determining IARS status.
Our analysis showed that of 44,839 registered animals, 36,991 were identified as Free (not carriers), 7,701 as Carrier (carrying one copy of the mutation) and 147 as Affected (having two copies of the mutation). The relative frequency of carrier animals in the population is approximately 16%.
Using the IARS status for a subset of animals, we used GeneProbe to determine the probability of Free and Carrier status for the sires considered “Foundation Japanese Black Sires”.
Testing for IARS became available from Monday 24 August for AWA members. If ou wish to have the IARS status of animals you have already had tested on 50K SNP displayed on the web, please contact the office. Where your genomics tests contain the IARS SNP already, we can display this information at no charge to the member.
Read about the Foundation Sires status of IARS and other genetic conditions here