University of Guelph Comparative Bone and Joint Disease Laboratory, Ontario Veterinary College, Guelph, Ontario N1G 2W1, Canada.
Effect of copper supplementation on copper status of pregnant mares and foals
Article first published online: 23 APR 2010
© 1998 EVJ Ltd
Equine Veterinary Journal
Volume 30, Issue 3, pages 200–203, May 1998
How to Cite
PEARCE, S. G., GRACE, N. D., WICHTEL, J. J., FIRTH, E. C. and FENNESSY, P. F. (1998), Effect of copper supplementation on copper status of pregnant mares and foals. Equine Veterinary Journal, 30: 200–203. doi: 10.1111/j.2042-3306.1998.tb04488.x
- Issue published online: 23 APR 2010
- Article first published online: 23 APR 2010
Pregnant Thoroughbred mares (n = 21) were grazed on tall fescue pasture containing 4.4–8.6 mg Cu/kg dry matter (DM). Twelve mares were supplemented with approximately 0.5 mg Cu/kg liveweight (LW)/day as copper sulphate for the final 13–25 weeks gestation. Plasma copper concentration declined during the third trimester for all mares and was not affected by copper supplementation. Liver copper concentration of mares and foals was determined when the foals were 4–10-days-old. Copper supplementation of the mares tended to increase mare liver copper concentration (P<0.08) and increased foal liver copper concentration (P<0.01). There was a significant relationship between mare and foal liver copper concentration (P<0.001, r2= 0.7). Increasing the copper intake of mares is effective in enhancing the copper status of foals.