scholarly journals Effect of Inorganic Phosphate Source and Dietary Phosphorus Level on Laying Hen Performance and Eggshell Quality

1992 ◽  
Vol 71 (6) ◽  
pp. 1022-1031 ◽  
Author(s):  
J.M. VANDEPOPULIERE ◽  
J.J. LYONS
Keyword(s):  
Inorganic Phosphate ◽  
Laying Hen ◽  
Phosphorus Level ◽  
Dietary Phosphorus ◽  
Eggshell Quality ◽  
Phosphate Source

scholarly journals Importance of Dietary Phosphorus for Bone Metabolism and Healthy Aging

Nutrients ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 3001
Author(s):  
Juan Serna ◽  
Clemens Bergwitz
Keyword(s):  
Bone Metabolism ◽  
Inorganic Phosphate ◽  
Healthy Aging ◽  
Current Knowledge ◽  
Atp Synthesis ◽  
The Body ◽  
Endocrine Regulation ◽  
Critical Function ◽  
Dietary Phosphorus ◽  
Different Tissues

Inorganic phosphate (Pi) plays a critical function in many tissues of the body: for example, as part of the hydroxyapatite in the skeleton and as a substrate for ATP synthesis. Pi is the main source of dietary phosphorus. Reduced bioavailability of Pi or excessive losses in the urine causes rickets and osteomalacia. While critical for health in normal amounts, dietary phosphorus is plentiful in the Western diet and is often added to foods as a preservative. This abundance of phosphorus may reduce longevity due to metabolic changes and tissue calcifications. In this review, we examine how dietary phosphorus is absorbed in the gut, current knowledge about Pi sensing, and endocrine regulation of Pi levels. Moreover, we also examine the roles of Pi in different tissues, the consequences of low and high dietary phosphorus in these tissues, and the implications for healthy aging.

scholarly journals Eggshell characteristics and cuticle deposition in three laying hen genotypes housed in enriched cages and on litter

2017 ◽  
Vol 63 (No. 1) ◽  
pp. 11-16 ◽  
Author(s):  
M. Ketta ◽  
E. Tumova
Keyword(s):  
Laying Hens ◽  
Quality Parameters ◽  
Laying Hen ◽  
Housing System ◽  
Eggshell Thickness ◽  
System Effect ◽  
Egg Weight ◽  
Housing Systems ◽  
Eggshell Quality ◽  
System P

The objective of the present study was to compare the eggshell characteristics and cuticle deposition of Lohmann Brown, Hy-Line Silver Brown, and Isa Brown layers kept in two different housing systems. The three laying hen genotypes were housed in enriched cages (100 hens, 750 cm<sup>2</sup>/hen, 10 hens/cage) and in littered pens (100 hens, 9 hens/m<sup>2</sup>, 10 hens/pen). The experiment was carried out in weeks 40–56 of hens age. Non-significant interactions of genotype and housing system for eggshell quality parameters and cuticle deposition were detected in this study. Egg weight was significantly affected by genotype (P ≤ 0.001) and housing system (P ≤ 0.043). The heaviest eggs were laid by Lohmann Brown, while the lightest eggs were produced by Hy-Line Silver Brown. Eggshell strength was not affected by genotype and housing system, however, genotype had a significant effect on eggshell thickness (P ≤ 0.033). Isa Brown eggs had thicker eggshells compared to Lohmann Brown and Hy-Line Silver Brown. However, a non-significant effect of housing system on eggshell thickness was observed. Eggshell percentage was significantly affected by both genotype and housing system. Genotype of laying hens had a significant effect on cuticle deposition; significantly higher cuticle deposition was observed in Lohmann Brown eggs (P ≤ 0.001). It could be concluded that genotype had a significant effect on eggshell quality parameters and cuticle deposition. However, the housing system effect was less important in these characteristics.

Mineral Balance Studies with the Baby Pig: Effects of Dietary Phosphorus Level upon Calcium and Phosphorus Balance

1964 ◽  
Vol 82 (1) ◽  
pp. 111-114 ◽  
Author(s):  
E. R. Miller ◽  
D. E. Ullrey ◽  
C. L. Zutaut ◽  
J. A. Hoefer ◽  
R. W. Luecke
Keyword(s):  
Phosphorus Level ◽  
Phosphorus Balance ◽  
Mineral Balance ◽  
Dietary Phosphorus ◽  
Calcium And Phosphorus
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