Dwarfism in a swine herd: suspected vitamin A toxicosis
Doige, C.E.; Schoonderwoerd, M.
Journal of the American Veterinary Medical Association 193(6): 691-693
1988
ISSN/ISBN: 0003-1488 PMID: 3192446 Document Number: 320615
Dwarfism was observed in a group of 30 crossbred pigs. Affected pigs had short limbs and retarded growth. Reduced longbone length as well as flattening and caudal rotation of the humeral head and the distal femoral condyles were seen at PM examinations. Metaphyseal growth plates in vertebrae were narrow and, in longbones, were closed prematurely. There was a sparing of growth plates in traction epiphyses. Vitamin A toxicosis was considered as a possible cause as hepatic concentrations of vitamin A were very high in 3 pigs examined.