PMID: 9553711Apr 29, 1998Paper

Serum copper and ceruloplasmin activity at the early growing stage in foals

Canadian Journal of Veterinary Research = Revue Canadienne De Recherche Vétérinaire
M OkumuraT Fujinaga

Abstract

Serum concentrations of copper (Cu), zinc (Zn), manganese (Mn), calcium (Ca) and inorganic phosphorus (P), as well as antigenic ceruloplasmin (Cp) and oxidase activity as a functional index for copper metabolism, were measured in 10 foals (5 males and 5 females) and their dams. Samples were harvested from the foals within 1 wk after birth and monthly from 1 to 17 mo of age. Samples were collected from their dams in the perinatal period (monthly from 2 mo before delivery to 5 mo postpartum). Serum oxidase activity, antigenic Cp and Cu in foals were extremely low at 1 wk. Serum Cp had the lowest value of 17.0 +/- 8.0 (mean +/- SD) mg/dL within the 1st wk, then increased rapidly up to 43.7 +/- 5.8 mg/dL at 1 mo, and maintained this level until the 17th mo. Serum Zn in foals had the highest value of 73.2 +/- 13.1 micrograms/dL within 1 wk, then decreased to 38.3 +/- 5.9 micrograms/dL by 17 mo. Serum Mn, Ca and P in mares were almost stable and within established reference ranges for our laboratory in the perinatal period, and these values in foals were also in the normal range. Even on appropriate feeding, serum Cu, Cp and oxidase activity were quite low a few weeks after birth, while a higher proportion of Cp-binding copper was fo...Continue Reading

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