ラットにおける天然物由来カルシウム素材の利用効率

概要

論文の詳細を見る
Bioavailability of four organic calcium （Ca） products （egg shell, fish bone, scallop shell, and dolomite） was evaluated by comparing with that of Ca-carbonate used as control Ca. Eight-week-old female rats were divided into eleven groups of a Ca-free diet and ten low Ca diets: 0.1％ Ca diets with four Ca products and control Ca, 0.25％ Ca diets of the same Ca sources as 0.1％ Ca diets. Animals were fed each diet for two weeks. No significant differences in food intake and body weight gain were observed among the eleven groups. Ca balance increased in the second week than in the first week, with decreasing fecal excretion without changing urinary excretion. Ca retention％ of Ca-carbonate during the day 11-12 in 0.1％ Ca and 0.25％ Ca diets was 83％ and 54％, respectively. Ca retention％ of organic Ca products except dolomite, which showed lowest value, was similar with that of Ca-carbonate. Though Ca level in the diets did not affect on femur weight, femur breaking strength and Ca content increased with increasing Ca content in the diets. Breaking strength of the femur was higher in test Ca than in control Ca. Results indicate that egg shell, fish bone and scallop shell are qualified Ca sources.
長野県短期大学の論文
2011-12-00