Canine epilepsy: a genetic counselling programme for keeshonds

Area of Science:

• Genetics
• Veterinary Medicine
• Canine Health

Background:

• Keeshonds exhibit a predisposition to idiopathic epilepsy.
• Previous observations suggested a genetic basis for the condition.

Purpose of the Study:

• To investigate the inheritance pattern of idiopathic epilepsy in Keeshonds.
• To assess the effectiveness of genetic counseling and breeding strategies in reducing epilepsy prevalence.

Main Methods:

• Pedigree analysis of epileptic ('fitters') and normal Keeshonds.
• Comparison of observed and expected ratios of affected offspring from carrier matings.
• Evaluation of a long-term genetic counseling program for breeders.

Main Results:

• The inheritance pattern is consistent with a single autosomal recessive gene.
• Observed ratios of normal to epileptic offspring (91:29) closely matched expected ratios (90:30).
• A significant decline in the mean probability of producing carriers indicates reduced gene frequency.

Conclusions:

• Idiopathic epilepsy in Keeshonds is determined by an autosomal recessive gene.
• Exclusion of carriers from breeding and genetic counseling have effectively reduced the prevalence of the epilepsy gene.
• The implemented breeding strategies have proven successful in managing canine epilepsy.