scholarly journals Calcium and Phosphorus Metabolism and Eggshell Thickness in Laying Hens Producing Thick or Thin Shells

1992 ◽  
Vol 71 (3) ◽  
pp. 490-498 ◽  
Author(s):  
M. CLUNIES ◽  
D. PARKS ◽  
S. LEESON
Keyword(s):  
Laying Hens ◽  
Thin Shells ◽  
Phosphorus Metabolism ◽  
Eggshell Thickness ◽  
Calcium And Phosphorus

scholarly journals Effect of Dietary Aluminum on Calcium and Phosphorus Metabolism and Performance of Laying Hens

1989 ◽  
Vol 68 (5) ◽  
pp. 706-714 ◽  
Author(s):  
AHMED S. HUSSEIN ◽  
AUSTIN H. CANTOR ◽  
THOMAS H. JOHNSON
Keyword(s):  
Laying Hens ◽  
Phosphorus Metabolism ◽  
Calcium And Phosphorus ◽  
And Performance

Calcium and phosphorus balances with laying birds

1942 ◽  
Vol 32 (1) ◽  
pp. 43-61 ◽  
Author(s):  
Cyril Tyler ◽  
James Stuart Willcox
Keyword(s):  
Calcium Carbonate ◽  
Laying Hens ◽  
Calcium Sulphate ◽  
Phosphorus Metabolism ◽  
Shell Formation ◽  
Review Of The Literature ◽  
Blood Calcium ◽  
Calcium And Phosphorus ◽  
Egg Shell ◽  
General Aspects

1. A series of balance experiments to compare calcium carbonate, calcium sulphate and calcium gluconate as sources of calcium for laying hens is described.2. Not one of the three supplements showed all-round superiority, but calcium sulphate was the worst.3. The main results indicate that:(a) Calcium sulphate and gluconate cause scouring but carbonate does not.(b) The best retention of calcium occurs with gluconate and the worst with sulphate.(c) Calcium carbonate gives the best shells and calcium sulphate the worst.4. The experiments also throw fresh light on some more general aspects of calcium and phosphorus metabolism.5. On the basis of these general results and a review of the literature of blood calcium and phosphorus in laying hens a theory dealing with certain aspects of egg-shell formation is presented.

A further study of the effect of sulphanilamide on the metabolism of calcium and phosphorus in the laying hen

1954 ◽  
Vol 45 (2) ◽  
pp. 156-163 ◽  
Author(s):  
C. Tyler
Keyword(s):  
Laying Hens ◽  
Previous Experiment ◽  
Laying Hen ◽  
Calcium Balance ◽  
Phosphorus Metabolism ◽  
Phosphorus Balance ◽  
Calcium Retention ◽  
Calcium And Phosphorus ◽  
Points Of View ◽  
Phosphorus Intake

An experiment has been performed on the effect of sulphanilamide on the calcium and phosphorus metabolism of laying hens.The results showed a decrease in calcium retention and thinner shelled eggs, when sulphanilamide was fed.When the drug was withdrawn the birds took some time to reach normal balance values again, but they immediately produced normally shelled eggs.The results of this experiment, along with a previous experiment, have been considered from other points of view in an attempt to find an explanation of some slightly divergent results. Relationships between calcium retained and calcium in shell and between calcium balance and phosphorus balance have been found and the values for changes in calcium bound to phosphorus and residual calcium in bone have been calculated. These considerations have helped to clear up the discrepancies, and it would appear that sulphanilamide effects may be influenced by season, and by calcium and phosphorus intake.

CHANGES IN THE METABOLISM OF CALCIUM AND PHOSPHORUS IN THE VARIOUS PHASES OF ACROMEGALY AND FOLLOWING THE IMPLANTATION OF THE PITUITARY GLAND WITH 90Y

1961 ◽  
Vol 36 (2) ◽  
pp. 161-179 ◽  
Author(s):  
G. M. Molinatti ◽  
F. Camanni ◽  
O. Losana ◽  
M. Olivetti
Keyword(s):  
Pituitary Gland ◽  
Marked Decrease ◽  
Active Phase ◽  
Tolerance Test ◽  
Urinary Calcium ◽  
Phosphorus Metabolism ◽  
Blood Calcium ◽  
X Ray ◽  
Calcium Retention ◽  
Calcium And Phosphorus

ABSTRACT A study of calcium and phosphorus metabolism has been carried out on 13 acromegalic patients, in various stages of the disease. This study was repeated in nine patients following implantation of the pituitary gland with 90Y and in another two patients after deep X-ray therapy and suction removal of a pituitary adenoma respectively. Increased urinary calcium and phosphorus excretion was found in all the patients in whom the disease was in an active phase of evolution. The calcium tolerance test revealed a marked decrease of calcium retention in certain subjects, while in others, calcium retention was found to be increased. Such changes were not found in patients in whom the disease was in a quiescent phase. The blood calcium, phosphorus and alkaline phosphatase were found to be either normal or slightly increased. The implantation of the pituitary gland with 90Y and deep X-ray therapy induced a marked decrease of hypercalciuria, both spontaneous and induced, and of hyperphosphaturia, together with a definite improvement, of the clinical picture and glucose metabolism. It is concluded that the changes in calcium and phosphorus metabolism described above depend either directly or indirectly on a pituitary factor. They may therefore prove a reliable index for assessing pituitary growth hormone activity.

scholarly journals POS-802 CONTROL OF CALCIUM AND PHOSPHORUS METABOLISM DISORDERS IN HEMODIALYSIS PATIENTS: ASSESSMENT OF ADHERENCE TO KDIGO RECOMMENDATIONS

2021 ◽  
Vol 6 (4) ◽  
pp. S348-S349
Author(s):  
M. Khadhar ◽  
R. Lazzez ◽  
I. Nasri ◽  
S. Bouassida ◽  
N. Sallemi ◽  
...  
Keyword(s):  
Hemodialysis Patients ◽  
Phosphorus Metabolism ◽  
Calcium And Phosphorus
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