Arthrogryposis Multiplex (AM) is a lethal genetic condition caused by a recessive gene that results in a deletion on two separate genes in Angus and Angus-influenced cattle. Affected calves are known to be still-born with a twisted spine, and extended and contracted limbs. The recessive gene has been traced back to GAR Precision 1680 (dating back to that bull’s maternal grandsire 9J9), a highly influential foundation Angus bull with multiple generations of offspring within the breed today. Click here to read more about the history of AM.

To address this issue, a genetic test has been developed by Dr Jon Beever at the University of Illinois and is available commercially through Pfizer Animal Genetics. For more information about AM and the importance of testing suspect animals, please download our brochure: