scholarly journals Effect of Dietary Calcium-Phosphorus Adjustment and/or Supplementation with Terephthalic Acid upon Serum Antibiotic Levels of Chickens

1959 ◽  
Vol 38 (1) ◽  
pp. 233-235 ◽  
Author(s):  
K.E. Price ◽  
Z. Zolli ◽  
J.H. Hare
Keyword(s):  
Terephthalic Acid ◽  
Dietary Calcium ◽  
Calcium Phosphorus

scholarly journals Dietary Calcium-Phosphorus Ratios for Growing Pigs in Relation to Serum Levels and Bone Development

1971 ◽  
Vol 12 (2) ◽  
pp. 202-219 ◽  
Author(s):  
N.C. Nielsen ◽  
S. Andersen ◽  
A. Madsen ◽  
H.P. Mortensen
Keyword(s):  
Bone Development ◽  
Serum Levels ◽  
Dietary Calcium ◽  
Growing Pigs ◽  
Calcium Phosphorus

Studies in the absorption and excretion of certain minerals by poultry. III. The influence of different levels of dietary calcium upon the retention of calcium, phosphorus, carbonate and chloride

1946 ◽  
Vol 36 (4) ◽  
pp. 283-288 ◽  
Author(s):  
Cyril Tyler
Keyword(s):  
Calcium Carbonate ◽  
Dietary Calcium ◽  
Egg Laying ◽  
Carbonate Content ◽  
Phosphorus Excretion ◽  
Calcium Carbonate Content ◽  
High Calcium ◽  
Calcium Phosphorus ◽  
Different Levels

1. The daily retention of calcium, carbonate, phosphorus and chloride was studied using four birds and changing the calcium carbonate content of the ration every 5 days for 15 days.2. It was shown that high calcium diets result in a much lower retention of calcium and thin-shelled eggs are produced.3. Retention of calcium was higher in the laying than in the non-laying bird when calcium carbonate was fed.4. High calcium diets depressed the retention of phosphorus, and in one case the retention was negative, even when no eggs were laid. Laying birds gave negative values for retention because of the heavy phosphorus excretion associated with egg laying.5. High calcium diets also depressed the retention of chloride, and on occasion led to negative retention values.

scholarly journals The effects of dietary calcium and phosphorus on the retention and excretion of lead in rats

1975 ◽  
Vol 34 (3) ◽  
pp. 351-362 ◽  
Author(s):  
J. Quarterman ◽  
J. N. Morrison
Keyword(s):  
Dietary Calcium ◽  
Skeletal Growth ◽  
Calcium Phosphorus ◽  
Calcium And Phosphorus

1. Rats were given diets containing different amounts of calcium, phosphorus and lead.2. Pb retention was greatly increased when the diets contained less Ca or P than the minimum estimated requirement of the rat.3. The release of Pb already incorporated into the skeleton was inhibited by diets low in Ca but was not affected by diets low in P.4. The retention of Pb given intraperitoneally was not affected by dietary Ca or P.5. It can be concluded that dietary Ca and P influence the absorption of Pb by the gut and dietary Ca influences the metabolism of Pb in the bone.6. There were changes in the distribution of Pb among the tissues due to changes of dietary Ca.7. At low body concentrations, Pb probably affected skeletal growth.

scholarly journals INFLUENCE OF DIETARY CALCIUM-PHOSPHORUS LEVELS ON APPARENT ABSORPTION OF MINERALS AND NITROGEN DURING GROWTH AND REPRODUCTION IN GILTS

1984 ◽  
Vol 64 (2) ◽  
pp. 491-494
Author(s):  
R. R. GRANDHI
Keyword(s):  
Key Words ◽  
Dietary Calcium ◽  
Nutrient Absorption ◽  
Nitrogen Absorption ◽  
Apparent Absorption ◽  
Key Words Calcium ◽  
Calcium Phosphorus ◽  
Phosphorus Levels ◽  
Growth And Reproduction

A higher Ca-P intake during finishing, gestation and lactation periods increased (P < 0.05) the apparent absorption (g/day) of Ca and P during all three periods. Nutrient absorption appeared to differ for Lacombe and Yorkshire gilts. Key words: Calcium, phosphorus, nitrogen, absorption, gilts

The influence of calcium, phosphorus and vitamin D supplementation of a pea–barley ration for growing pigs

1977 ◽  
Vol 28 (3) ◽  
pp. 543 ◽  
Author(s):  
BA Stone ◽  
GH McIntosh
Keyword(s):  
Vitamin D3 ◽  
Agricultural Research ◽  
Dietary Calcium ◽  
Bone Fragility ◽  
Growing Pigs ◽  
Plasma Calcium ◽  
Similar Response ◽  
Dietary Phosphorus ◽  
Calcium Phosphorus ◽  
Vitamin D3 Supplementation

A diet based on field peas and barley can satisfy the mineral requirements of growing pigs provided that calcium is supplemented at least to the level of dietary phosphorus present, and that vitamin D3 supplementation is greater than Agricultural Research Council recommendations. Bone fragility and lameness observed in pigs on a low calcium-low vitamin D3 diet was overcome by increasing either of these components, and this was accompanied by increased metacarpal ash and femur breaking strength. A similar response could also be produced by increasing dietary phosphorus levels. Plasma calcium and phosphate concentrations were significantly influenced by changes in the dietary calcium/phosphorus ratio, whereas vitamin D3 changes had a minimal influence. Parathyroid activity appeared to reflect the plasma calcium concentration. There did not appear to be any relationship between plasma concentrations and bone fragility or lameness.In order to ensure adequate bone development in pigs offered a diet of plant origin, vitamin D3 supplementation and elevation of dietary calcium to the level of total phosphorus present is a minimum requirement.

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