Arthrogryposis Multiplex (AM),also known as
Curly Calf Syndrome, 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:
AM
Information Sheet
New Zealand
Australia
United States
Canada
For additional industry information, please
visit our
Resources page.