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GROWTH OF THE RADIUS AND ULNA IN LABRADOR RETRIEVER DOGS WITH OCULAR AND SKELETAL DYSPLASIA
Author(s) -
Carrig Colin B.,
Schmidt Gretchen M.,
Tvedten Harold W.
Publication year - 1990
Publication title -
veterinary radiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.541
H-Index - 60
eISSN - 1740-8261
pISSN - 0196-3627
DOI - 10.1111/j.1740-8261.1990.tb01858.x
Subject(s) - ulna , labrador retriever , beagle , purebred , anatomy , medicine , femur , biology , breed , pathology , surgery , zoology
An associated ocular and skeletal dysplasia in Labrador Retrievers is caused by one abnormal gene which has recessive effects on the skeleton and incompletely dominant effects on the eye. The forelimbs of normal and affected pups were radiographed between birth and 156 days of age and the length of the radius and ulna measured. There was a significant difference in the mean length of these bones in normal and affected pups at birth and this difference was maintained over the period of observation. Similar differences were observed in purebred Labrador Retrievers and in Labrador Retriever‐Beagle crosses. The results of this study suggest that the length of the radius and ulna could be used to identify pups affected by this syndrome if test matings with affected animals were done to identify carrier animals. Abnormal shape of the radius and ulna, which is seen in animals affected with this syndrome, should be used to augment the accuracy of identification of puppies affected by this syndrome.