Dietary calcium content influences body composition and bone markers of obese (beta O) growing rats

Bone ◽  
2010 ◽  
Vol 47 ◽  
pp. S191
Author(s):  
A. Weisstaub ◽  
E. Hernandez ◽  
G.G. Pellegrini ◽  
C. Marotte ◽  
M.L. de Portela ◽  
...  
Bone ◽  
2009 ◽  
Vol 45 (6) ◽  
pp. S154
Author(s):  
A. Weisstaub ◽  
E. Hernández ◽  
M.M.S. Gonzáles Chaves ◽  
G.G. Pellegrini ◽  
C. Marotte ◽  
...  

Bone ◽  
2012 ◽  
Vol 50 ◽  
pp. S144-S145
Author(s):  
C. Marotte ◽  
A. Weisstaub ◽  
J. Somoza ◽  
M.L. Portela ◽  
S.N. Zeni⁎

2020 ◽  
Vol 44 (1) ◽  
pp. 275-281
Author(s):  
A. A. Mako ◽  
A. O. Mosuro ◽  
B. S. Adedeji ◽  
F. O. Jemiseye ◽  
T. Abokede

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.


2004 ◽  
Vol 286 (4) ◽  
pp. R669-R677 ◽  
Author(s):  
Qinmin Zhang ◽  
Michael G. Tordoff

Recent epidemiological and animal studies have led to the hypothesis that low dietary calcium intakes contribute to obesity. Here, we evaluated whether calcium influenced the body weight of normal-weight and obese rodents. All experiments involved female C57BL/6J mice or Sprague-Dawley rats fed normal- or high-energy-density diets (3.8 or 4.7 kcal/g). Calcium intake was manipulated by allowing mice to drink sweetened 30 mM CaCl2 solution or feeding mice and rats diets differing in calcium content (0.2%, 0.6%, or 1.8% Ca2+). Blood samples were taken from rats to confirm that the diets had their intended effects on metabolism. There were no effects of the calcium manipulations on energy intake, body weight, or carcass fat content and no simple relation between calciotropic hormones and body weight. One experiment found a significant decrease in body weight gain of lean and obese rats fed the 1.8% Ca2+ diet, but we suspect that this was due to forced consumption of the unpalatable diet, reducing growth. These studies provide little support for the hypothesis that dietary calcium contributes to the etiology or maintenance of obesity.


Nutrients ◽  
2012 ◽  
Vol 4 (9) ◽  
pp. 1328-1337 ◽  
Author(s):  
Julio Tirapegui ◽  
Sandra Maria Lima Ribeiro ◽  
Ivanir Santana de Oliveira Pires ◽  
Marcelo Macedo Rogero

2011 ◽  
Vol 52 (6) ◽  
pp. 718-729 ◽  
Author(s):  
M.R. Tatara ◽  
W. Krupski ◽  
M. Jankowski ◽  
Z. Zduńczyk ◽  
J. Jankowski ◽  
...  

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