Calcium Requirements
نویسندگان
چکیده
منابع مشابه
Evaluation of Dietary Calcium Requirements in Fayoumi Laying Hens
The experiment was carried out in poultry experimental station belonging to NRC, Cairo, Egypt. A total of 120 Fayoumi layers, 45 weeks old, were randomly divided into four equal groups. Each group included three replicates (10 hens in each). The first group was fed the control diet containing 3.3% gram Ca, whereas, the other three received diets containing 2.8, 2.6 and 2.4% gram Ca, respectivel...
متن کاملCalcium Requirements of Growing Pigs »
The role of calcium and phosphorus in animal nutrition has received much attention in recent years, and many studies have been made to determine the need of these minerals in the nutrition of the pig. Much of the work has dealt with deficient rations and means of correcting the deficiencies. Recently the individual minimum requirements of these minerals have received the attention of investigat...
متن کاملCalcium balance and calcium requirements in middle-aged women.
Calcium balance performance was evaluated in 130 normal perimenopausal women ages 35 to 50, studied on their usual, self-selected dietary calcium intakes. Two distinct balance methods were used, one based on customary intake and output measurements, and the other based on absorption and clearance of two simultaneously administered calcium isotopes. Both methods yielded essentially identical res...
متن کاملCalcium requirements for Asian children and adolescents.
Calcium is important for bone health. Over the last 15 years, reference calcium intakes in Western countries have been revised upwards for maximizing bone mass at skeletal maturity and for prevention of osteoporotic fractures. Some of these reference figures have also been adopted for use in Asian countries. However, the scientific data based on for revising reference calcium intakes in the Wes...
متن کاملCalcium requirements for cardiac myofibrillar activation.
The amounts of calcium required to achieve various levels of myofibrillar activation in the dog heart were determined by measuring the dependence of myofibrillar calcium binding, myofibrillar adenosinetriphosphatase (ATPase), and isometric tension on free calcium concentration. Myofibrillar ATPase was half-maximal at 2.4 x lO^M free calcium, and tension development was half-maximal at 2.0 x 10~...
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ژورنال
عنوان ژورنال: BMJ
سال: 1963
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.1.5327.397-a