Comparative study of copper and zinc metabolism in cattle and camel |
| |
Authors: | M Bengoumi A K Essamadi J C Tressol B Faye |
| |
Institution: | (1) Laboratoire de Biochimie clinique, I.A.V. Hassan II, Rabat-Instituts, Maroc;(2) Laboratoire de Biochimie, F.S.T. Settat, BP 577, Settat, Maroc;(3) Laboratoire des Maladies Métaboliques, INRA, Theix, 63122 St Genes Champanelle, France;(4) CIRAD-EMVT, U.R. Productions Animales, Campus International de Baillarguet, 34032 Montpellier, France |
| |
Abstract: | At an experimental farm, five camels and five cows were fed a similar basal diet for 6 mo. They received oral trace element
supplementation for 3 mo (day 22–112). This supplementation included zinc, copper, selenium, managanese, iodine, and cobalt,
and corresponded to twice the requirements generally recommended for cows. Plasma copper and zinc concentrations were significantly
lower in the camels (61 μg/100 mL for copper and 38 μg/100 mL for zinc) than in the cows (111 and 83, respectively). The supplementation
had no effect on plasma zinc concentration in the camels in spite of the low observed values in this species. Liver copper
concentration at the beginning of the trial was lower in the camels (9 ppm) than in the cows (35 ppm), and stayed at lower
levels during the entire supplementation period. There was no clear difference in fecal excretion of copper and zinc between
the camels and the cows. The results suggested that trace element requirements are lower in camels than in cows and that camels
regulate their plasma zinc concentration at a very low level (<40 μg/100 mL). |
| |
Keywords: | Trace element nutrition liver storage fecal excretion copper zinc camel cow |
本文献已被 SpringerLink 等数据库收录! |
|