Title
Hepatic vitamin A and carotene levels in the newborn foal
Abstract
Previous reports have indicated that at birth, the livers of calves, rats and rabbits contain very little vitamin A or its precursor carotene. A definitive report of the level of hepatic vitamin A and carotene in neonatal foals has not been found. To avoid having to sacrifice neonates, a cooperative collection program was initiated with local veterinarians to utilize livers from newborn foals that had not survived. The collection protocol was defmed as: a) the foal must have been born full term; b) the foal must have never nursed; and c) the foal must have appeared normal to a veterinarian or veterinary diagnos- tic laboratory. Ten whole livers were collected over a two year period. Liver samples were analyzed for total vitamin A and beta carotene. The mean (±SE) vitamin Alevelofthe ten livers was 20.7 ± 6.1 mcg/g of wet tissue. The beta carotene concentration in all livers was minimal: <4 mcg/g. The hepatic vitamin A levels of newborn foals are much lower than the levels that have been reported in the literature for mature horses but higher than those reported for newborn calves. © 1991, William E. Jones All Rights Reserved.. All rights reserved.
Department(s)
Agribusiness, Education, and Communication
Document Type
Article
DOI
https://doi.org/10.1016/S0737-0806(06)81315-8
Publication Date
1-1-1991
Recommended Citation
Irwin, L. N., J. A. Robberson, and G. Crouch. "Hepatic vitamin A and carotene levels in the newborn foal." Journal of Equine Veterinary Science 11, no. 5 (1991): 278-280.
Journal Title
Journal of Equine Veterinary Science