title: Hypovitaminosis A in feedlot cattle.
abstract: Hypovitaminosis A was diagnosed in a group of feedlot cattle that had been fed a diet low in carotene for 18 months. The primary signs of disease in the cattle were poor weight gain, ataxia, convulsions, night blindness, and total blindness. Serum vitamin A concentrations were used to confirm the diagnosis. The cattle were treated orally and intramuscularly with vitamin A, and the less severely affected herd members recovered rapidly.
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology* / Q000473:pathology; D005260:Female; D008297:Male; D014802:Vitamin A Deficiency / Q000473:pathology / Q000662:veterinary*