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  • Title: Congenital sensorineural deafness in Dogo Argentino dogs: Prevalence and phenotype associations.
    Author: Strain GM.
    Journal: Vet Rec; 2021 May; 188(9):e299. PubMed ID: 33870537.
    Abstract:
    BACKGROUND: The Dogo Argentino dog breed is affected by hereditary congenital sensorineural deafness (CSD) associated with white pigmentation, but prevalence data and associations with phenotypes have not been reported. METHODS: In a retrospective study, animals were tested by the brainstem auditory evoked response, and phenotype data of sex, iris color, patch presence/absence and parent hearing status were collected. Chi-square analyses were performed to identify associations between deafness and phenotype traits. RESULTS: BAER results and phenotype data were collected for 811 dogs. Hearing status was 74.23% bilaterally hearing, 20.35% unilaterally deaf and 5.43% bilaterally deaf or an overall prevalence of 25.77%. CSD was not associated with sex, but dogs without a patch had a significantly higher prevalence rate than patched dogs. Blue-eyed dogs had higher prevalence rates than brown-eyed dogs, but because of small sample size the χ2 association was not considered valid. Insufficient numbers of dogs with a unilaterally deaf parent were present to assess the effects of parent hearing status. CONCLUSION: Approximately one fourth of a US Dogo Argentino population was deaf in one or both ears, but dogs with a patch had a lower prevalence. Dogs with a blue eye were more likely to be deaf, but the association significance could not be reliably assessed.
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