Heredity of navicular disease

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Abstract
Bone structure, nutrient canals, form and definition, and a total evaluation of both fore navicular bones were radiologically evaluated in 169 three‐ and four‐year‐old Dutch warmblood mares divided into eleven daughter (half sister) groups. On the basis of the ‘total evaluation’, differences between the three‐and four‐year‐old horses were detectable. Using the ‘total evaluation’, significant differences were found between daughter groups consisting of three‐year‐oldmares. These differences support the theory that podotrochleosis may be (partly) due to the presence of genetic factors. The possibilities concerning selection are presented. The results of the radiological evaluation of the stallion do not have predictive value as far as his progeny is concerned.

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