Genetic Factors: Idiopathic Epilepsy (IE)
American Simmental Association
Like most other genetic abnormalities, a single pair of genes control this epilepsy. First apparent in calves, environmental stresses such as thermal or physical e.g. stressful handling, etc. often bring out the seizures. Hereford has made the most effort to identify carriers. Since the 1960s and 70s featured very large numbers of Simmental bulls mated to Hereford cows in up breeding programs, IE is possible from pedigrees tracing to either Hereford or “commercial” cows.
