scholarly journals Effect of Dietary Calcium Level on Medullary Bone Calcium Reserves and Shell Weight of Leghorn Hens

1992 ◽  
Vol 71 (8) ◽  
pp. 1348-1356 ◽  
Author(s):  
M. CLUNIES ◽  
J. EMSLIE ◽  
S. LEESON
Keyword(s):  
Calcium Level ◽  
Dietary Calcium ◽  
Medullary Bone ◽  
Shell Weight ◽  
Bone Calcium

Response of Early-Weaned Pigs to Variations in Dietary Calcium Level with and without Lactose

1963 ◽  
Vol 22 (2) ◽  
pp. 501-505 ◽  
Author(s):  
L. A. Menahan ◽  
P. A. Knapp ◽  
W. G. Pond ◽  
J. R. Jones
Keyword(s):  
Calcium Level ◽  
Dietary Calcium ◽  
Weaned Pigs

scholarly journals Influence of Different Phosphorus Phase-Feeding Programs and Dietary Calcium Level on Performance and Body Phosphorus of Laying Hens

1987 ◽  
Vol 66 (9) ◽  
pp. 1524-1530 ◽  
Author(s):  
JERRY L. SELL ◽  
SHEILA E. SCHEIDELER ◽  
BARBARA E. RAHN
Keyword(s):  
Calcium Level ◽  
Laying Hens ◽  
Dietary Calcium ◽  
Feeding Programs

scholarly journals Association of dietary calcium intake, total and ionized serum calcium levels with preeclampsia in Ethiopia

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Rahel D. Gebreyohannes ◽  
Ahmed Abdella ◽  
Wondimu Ayele ◽  
Ahizechukwu C. Eke
Keyword(s):  
Serum Calcium ◽  
Calcium Intake ◽  
Calcium Level ◽  
Serum Calcium Level ◽  
Dietary Calcium ◽  
Ionized Calcium ◽  
Dietary Calcium Intake ◽  
Total Serum ◽  
Total Serum Calcium ◽  
Total Serum Calcium Level

Abstract Background Preeclampsia is a well-known cause of maternal mortality and morbidity in Ethiopia. The exact pathophysiology has not been fully understood. Calcium and magnesium deficiencies have been given emphasis to play roles in the pathophysiology. Although evidence is abundant, they are equivocal. The study aimed to see the association of dietary calcium intake, serum total calcium level and ionized calcium level with preeclampsia. It also evaluated the association between dietary calcium intake and serum calcium levels. Materials and methods An unmatched case–control study was conducted in Gandhi Memorial, Tikur Anbessa, and Zewditu Memorial Hospitals, all in Addis Ababa, between October to December, 2019. Cases were 42 women with preeclampsia and controls were 42 normotensive women. The medical and obstetric history was gathered using a structured questionnaire and the dietary calcium intake information using a 24-h dietary recall. The serum levels of total serum calcium and ionized (free) calcium were measured using an inductively coupled mass spectrophotometer. Bivariate and multivariate logistic regression and Pearson correlation test were utilized during data analysis. Results In comparison with controls, women with preeclampsia had lower mean (± 1SD) levels of ionized calcium level (1.1 mmol/l ± 0.11), total serum calcium level (1.99 mmol/l ± 0.35) and lower median (IQR) dietary calcium intake (704 mg/24 h,458–1183). The odds of having preeclampsia was almost eight times greater in those participants with low serum ionized calcium level (OR 7.5, 95% CI 2.388–23.608) and three times higher in those with low total serum calcium level (OR 3.0, 95% CI 1.024–9.370). Low dietary calcium intake also showed statistically significant association with preeclampsia (OR 3.4, 95% CI 1.092 -10.723). Serum ionized calcium level and total serum calcium level showed positive correlation of moderate strength (p = 0.004, r = 0.307), but no correlation was found between dietary calcium intake with both forms of serum calcium levels. Conclusion This study showed significant association between low dietary calcium intake and low serum calcium levels with preeclampsia, hence this can be used as a supportive local evidence for the current context-specific recommendation of calcium supplementation in societies with low-dietary calcium consumption in an attempt to prevent preeclampsia, therefore implementation study should be considered in Ethiopia to look for the feasibility of routine supplementation.

Influence of Steam Pelleting and Dietary Calcium Level on the Utilization of Phosphorus by the Pig

1975 ◽  
Vol 40 (5) ◽  
pp. 857-863 ◽  
Author(s):  
H. S. Bayley ◽  
J. Pos ◽  
R. G. Thomson
Keyword(s):  
Calcium Level ◽  
Dietary Calcium

scholarly journals Comparative use of oyster shell and limestone as sources of calcium in the diet of laying chickens

2020 ◽  
Vol 44 (1) ◽  
pp. 275-281
Author(s):  
A. A. Mako ◽  
A. O. Mosuro ◽  
B. S. Adedeji ◽  
F. O. Jemiseye ◽  
T. Abokede
Keyword(s):  
Feed Intake ◽  
Production Efficiency ◽  
Laying Hens ◽  
Oyster Shell ◽  
Calcium Content ◽  
Dietary Calcium ◽  
Feed Utilization ◽  
Ash Content ◽  
Bone Meal ◽  
Shell Weight

Egg producers primarily use oyster shell or limestone as supplemental sources of dietary calcium. This study was conducted to investigate the efficiencies of limestone (CaCo3 ) and oyster shell as calcium sources in the diets of laying hens. Ninety, 58 weeks old Golden Comet Hubbard laying birds were randomly allotted to three treatments of three replicates. Each replicate had 10 birds per replicate. Three different rations were formulated for the study. To include Diet 1 as the control, a diet with bone meal (46%) and oyster shell (54%). Diet 2 had oyster shell and bone meal supplying 82% and 18% of the dietary calcium while Diet 3 had 82% and 18% of the dietary calcium supplied by limestone and bone meal respectively. Feed and water were provided ad-libitum. The parameters measured include: Feed intake (g/d); Hen day production (%); Efficiency of feed utilization (kg); Egg and shell weight (g); Bone weight (g); Ash content of bone (%) and Calcium content of bone (%). The study lasted eight weeks. Results revealed that birds on Diet1 had the highest value for feed intake (0.11 g/d) that differed significantly (P<0.05) from the value (0.10 g/d) obtained for Diet 2 and 3 Hen day production for birds on Diet 2 (57.04) and Diet 3 (56.30) were similar, but differed significantly (P<0.05) from birds on Diet 1 (65.44). Efficiency of feed utilization (EFU kg) was not significantly affected by the dietary treatments as birds on Diet1 had the lowest EFU value (1.80) while birds on Diet 2 had the highest EFU value (2.05). A higher percent of eggs within 50-59g were laid by birds on Diet 3, while eggs of 60g and above were laid by birds on Diet 1 (62 g), significant (p<0.05) variations occurred among treatment means for these egg grade. Egg shell percent was not significant, same trend was observed for bone weight. The effect of dietary treatment on the ash content of bones were similar for birds on Diet 2 and 3, except for bone humerus, however, significant (p<0.05) variation occurred between birds on diets 1 and other two Diets. Calcium contents of the different bones were differed significantly (p<0.05) with birds on diet 3 recording the highest values for all bone investigated. It can be concluded from this study that Limestone can replace oyster shell as a source of calcium in the diet of laying hens without deleterious effect.

scholarly journals The effect of vitamin D3 and dietary calcium level on the cadmium-induced morphological and biochemical changes in rat intestinal mucosa.

1978 ◽  
Vol 24 (4) ◽  
pp. 405-418 ◽  
Author(s):  
Setsuko NODA ◽  
Kura KUBOTA ◽  
Kazuhiko YAMADA ◽  
Setsuko YOSHIZAWA ◽  
Sachiko MORIUCHI ◽  
...  
Keyword(s):  
Intestinal Mucosa ◽  
Vitamin D3 ◽  
Calcium Level ◽  
Dietary Calcium ◽  
Biochemical Changes

High Dietary Calcium Level Decreases Colonic Phytate Degradation in Pigs Fed a Rapeseed Diet

1993 ◽  
Vol 123 (3) ◽  
pp. 559-566 ◽  
Author(s):  
Ann-Sofie Sandberg ◽  
Torben Larsen ◽  
Brittmarie Sandström
Keyword(s):  
Calcium Level ◽  
Dietary Calcium ◽  
Phytate Degradation
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