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Supplementation of broodmares with copper, zinc, iron, manganese, cobalt, iodine and selenium
Brief content of the article
The authors studied the effect of supplemental copper (Cu), zinc (Zn), manganese (Mn), cobalt (Co) and Se in two experiments . In the first experiment 6 pregnant mares were fed a concentrate (which contained a trace mineral premix) without furter supplementation of Cu and Zn (concentrate A). A group of seven mares received the same concentrate plus 502 mg Zn and 127 mg Cu daily. They found no statistical differences in foal growth data and serum-, milk and Cu, Zn and Fe-concentrations of the foals. No differences were observed in mare milk
In experiment 2, 6 pregnant mares (group C) received also concentrate A and 8 mares received the same concentrate but with 4 times the mineral premix (group D). The researchers found that group C mares had higher milk Fe concentration at 28 days and group D mares had higher milk Cu concentrations at 56 days. Foals of group C had higher serum Cu concentration at 14 days. concentration at 14 days.
The authors conclude that on the basis of this study that higher trace mineral levels in the diet of broodmares than recommended by the NRC have no influence on foal growth and development.
Keywords: NRC; mare; foals; trace minerals; supplementation; growth.
Kavazis, A.N., Kivipelto, J. and Ott, E.A. 2002. Supplementation of broodmares with copper, zinc, iron, manganese, cobalt, iodine and selenium. J. Eq. Vet. Sci. 22: 460-464.
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