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Inherited deafness among nervous pointer dogs

S A Steinberg1, E Klein, R L Killens

  • 1Department of Clinical Studies, Philadelphia, Veterinary School, University of Pennsylvania 19104-6010.

The Journal of Heredity
|January 1, 1994
PubMed
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A genetic study found that deafness in pointer dogs is likely caused by an autosomal recessive gene. This condition was prevalent in a specific dog colony bred for nervous behaviors.

Area of Science:

  • Veterinary Genetics
  • Animal Behavior
  • Auditory Science

Background:

  • Selective breeding in pointer dogs for nervous behaviors has led to an unexpected high incidence of deafness.
  • Deafness in canine populations can have significant welfare implications and complex genetic underpinnings.

Purpose of the Study:

  • To investigate the mode of inheritance for deafness in a colony of pointer dogs exhibiting excessive nervous behavior.
  • To confirm the presence of deafness using objective audiological testing.

Main Methods:

  • Brainstem auditory evoked response (BAER) testing was employed to objectively confirm deafness.
  • Outcross and F1 backcross breeding experiments were conducted to analyze inheritance patterns.

Main Results:

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  • A high incidence of deafness was identified in the selectively bred pointer dog colony.
  • Breeding data strongly supported an autosomal recessive inheritance pattern for deafness in this canine family.

Conclusions:

  • The findings suggest that an autosomal recessive gene is responsible for the observed deafness in this pointer dog population.
  • Understanding the genetic basis of deafness is crucial for selective breeding programs and canine welfare.