Ma Xuan-yue
2004
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Quality indicators
Journal
Journal of Jilin University of
Abstract
Objective To study the absorpion and utilization of calcium gluconate and calcium lactate in rats in vivo. Methods Weaning male Wistar rats were randomly divided into 5 groups and fed on CaCO 3, skimmed milk powder, calcium gluconate, calcium lactate, and basic low calcium meal in semi-purified diets, respectively, for 4 weeks. Meanwhile,the experiments of 3 days′ feed efficiency and 4 days′ calcium metabolism were carried out on the 20th and 25th day, respectively. Results In calcium-gluconate group, the incremental rate of body weight,the absorption and retention rate of calcium,the femur index, and retention rate of calcium in femur were 92.1%,68.2%,85.1%,4.96, and 4.6%, respectively, all indexes were lower than those in milk-powder group and higher than those in CaCO 3 group (P0.05 or P0.01). The items mentioned above in calcium-lactate group were 75.1%,65.5%,82.0%,4.88 and 4.1%, respectively,also higher than those in CaCO 3 group (P0.05 or P0.01),no differences were found between calcium-gluconate group and calcium-lactate group except that the incremental rate of body weight in calcium-lactate group was lower than that in calcium-gluconate group.Conclusion Both calcium gluconate and calcium lactate can be served as the good sources for dietary calcium supplement.