Influences on the frequency of estimated Collie Eye Anomaly (CEA) in Collies and Shelties in preventive examination-results of a breeding club organisation [German]

摘要

Veterinary examination results from 1.612 Shelties and 2.514 Collies, as demanded in a program to reduce hereditary eye diseases, were analysed in a data set of in total 15.022 Collies and 6.209 Shelties of a German breeding club in respect to the total frequency of Collie Eye Anomaly (CEA) and possible effects on the frequency. 19.7 % of the Shelties and 22.6 % of the Collies were described as affected. Neither gender nor coat colour showed an effect on the CEA-frequency. Additionally, there was no trend over the last ten years to a higher or lower incidence. In contrast, there were significant differences in the CEA diagnosis depending on the dogs age at examination. Especially Collies examined up to an age of 10 weeks showed a significant higher frequency of CEA than the older dogs. The effect of the age at examination could be explained by a go-normal-rate of 52.9 % in Shelties and 62.5 % in Collies. Additionally there were significant differences in the CEA diagnosis depending on the level of the veterinarians practice. The frequency of CEA ranged between 3.5 % (veterinarians without further education in ophthalmology) and 34.7 % (members of DOK and AKVO). This shows the necessity within a breeding program to standardize the national and international frame conditions for CEA diagnostics.