Influence of dietary chromium yeast supplementation on apparent trace elements metabolism in growing camel (Camelus dromedarius) reared under hot summer conditions
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This study aimed to evaluate the effect of dietary chromium (Cr) supplementation on the apparent metabolism of some trace elements in camel calves reared under hot summer conditions. The study was conducted on a total of 15 male camel calves (5–6 months old) reared under hot summer conditions for 12 weeks. The animals were housed individually under shelter and divided into three dietary treatment groups (diets supplemented with 0.0, 0.5, or 1.0 mg Cr/kg DM), five animals each. At the end of the study, a metabolic trial was conducted on all camels for the evaluation of trace elements metabolism. Cr excretion, absorption, and retention showed an increasing trend with the increasing level of dietary Cr supplementation. Dietary Cr supplementation at 0.5 mg Cr/kg DM to camel calves resulted in a significant (P < 0.05) increase in Cu and an increasing trend in Zn and Mn excretion via urine and feces. However, Fe retention increased significantly (P < 0.05) in camel calves fed on diet supplemented with Cr. Dietary Cr supplementation to camel calves resulted in an increasing trend of plasma Cr concentration, while plasma concentration of Cu and Zn tended to decrease and without any effect on plasma Fe concentration. The results of the present study suggests that care should be taken for the negative interaction of Cr with the utilization of other trace elements, in cases where Cr is supplemented to the diet as a feed additive to promote growth and immunity under hot climatic conditions.
KeywordsCamel Chromium Heat stress Trace elements
The authors extend their appreciation to the Deanship of Scientific Research at King Saud University for funding this work through research group No (RGP-VPP-171).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
Statement of ethical approval
The animal experiment was conducted according to the ethics regulations of research on living creatures approved by the ethics committee at King Saud University.
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