scholarly journals Effect of dietary levels of calcium and phosphorus on growth and bone formation of female broiler chicks.

1988 ◽  
Vol 25 (5) ◽  
pp. 305-311
Author(s):  
Minoru YOSHIDA ◽  
Shigemi SHOYA ◽  
Masuo SUEYOSHI ◽  
Takao MIZUNO
Keyword(s):  
Bone Formation ◽  
Broiler Chicks ◽  
Calcium And Phosphorus

5. The hard stuff: calcium, cells, bones, and cancer

2014 ◽  
pp. 63-73
Author(s):  
Martin Luck
Keyword(s):  
Bone Formation ◽  
Bone Development ◽  
Skeletal Development ◽  
Hard Materials ◽  
Calcium And Phosphorus ◽  
Calcium Cells ◽  
Controlled Precipitation

‘The hard stuff: calcium, cells, bones, and cancer’ considers calcium and the hormone systems that regulate it. These hormones keep the correct balance between the highly reactive Ca2+ ions, which are essential for many life processes, and the precipitating salts like carbonates and phosphates. Controlled precipitation builds bones that defy the pull of gravity and hard materials that protect against predators. Bone formation and recycling take energy, as well as calcium and phosphorus, and all aspects of skeletal development are affected by the hormones of growth and metabolism. There are connections between bone development and appetite which work through serotonin, leptin, insulin, and hormones produced by the gut, in addition to calcitonin.

scholarly journals Effect of Dietary Aluminum Sulfate on Calcium and Phosphorus Metabolism of Broiler Chicks

1990 ◽  
Vol 69 (6) ◽  
pp. 985-991 ◽  
Author(s):  
AKMED S. HUSSEIN ◽  
AUSTIN H. CANTOR ◽  
THOMAS H. JOHNSON ◽  
ROBERT A. YOKEL
Keyword(s):  
Aluminum Sulfate ◽  
Broiler Chicks ◽  
Phosphorus Metabolism ◽  
Calcium And Phosphorus

scholarly journals Nutritional geometry of calcium and phosphorus nutrition in broiler chicks. Growth performance, skeletal health and intake arrays

animal ◽  
2014 ◽  
Vol 8 (7) ◽  
pp. 1071-1079 ◽  
Author(s):  
E.J. Bradbury ◽  
S.J. Wilkinson ◽  
G.M. Cronin ◽  
P.C. Thomson ◽  
M.R. Bedford ◽  
...  
Keyword(s):  
Growth Performance ◽  
Phosphorus Nutrition ◽  
Broiler Chicks ◽  
Skeletal Health ◽  
Nutritional Geometry ◽  
Calcium And Phosphorus

scholarly journals Levels of available phosphorus and calcium for broilers from 8 to 35 days of age fed rations containing phytase

2010 ◽  
Vol 39 (6) ◽  
pp. 1237-1245 ◽  
Author(s):  
Adimar Cardoso Júnior ◽  
Paulo Borges Rodrigues ◽  
Antônio Gilberto Bertechini ◽  
Rilke Tadeu Fonseca de Freitas ◽  
Renato Ribeiro de Lima ◽  
...  
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Control Diet ◽  
Metabolizable Energy ◽  
Available Phosphorus ◽  
Broiler Chicks ◽  
Food Conversion ◽  
Significant Difference ◽  
Calcium And Phosphorus ◽  
Four Levels

Two experiments using Cobb broiler chicks from 8 to 35 days of age were carried out to evaluate the effect of reducing levels of calcium and available phosphorus in diets supplemented with 500 ftu phytase/kg on the performance of the birds, the content of ashes in the tibia, the metabolizable energy of the diet, and the metabolizability of the dry matter and crude protein. It was used 1,404 broiler chicks in the experiment 1 to evaluate feed intake, weight gain, food conversion and percentage of the ashes in the tibia. In the experiment 2, simultaneously carried out with experiment 1, a total of 390 birds were transferred to a metabolism room to determine the metabolizable energy and metabolizability of the dry matter and crude protein. It was used in the two experiments, a complete random design in a 3 × 4 + 1 factorial scheme with three levels of available phosphorus (0.375; 0.325; and 0.275%) and four levels of calcium (0.85; 0.75; 0.65 and 0.55%) in the diets, supplemented with phytase. It was also used a control diet without phytase, based on corn and soybean bran, formulated with 0.425% of available phosphorus and 0.85% of calcium. In the experiment 1, the reduction of levels of calcium and phosphorus did not cause a significant difference on the performance and percentage of bone ashes. The levels of calcium and available phosphorus used in the experiment 2 can be reduced down to 0.65 and 0.325%, respectively, because the effects are similar to those obtained with the currently suggested levels.

scholarly journals Amino acid reduction in broiler diets supplemented with phytase and elaborated according to different nutritional plans

2012 ◽  
Vol 36 (2) ◽  
pp. 224-232 ◽  
Author(s):  
Jeferson Eder Ferreira Oliveira ◽  
Paulo Borges Rodrigues ◽  
Renata Ribeiro Alvarenga ◽  
Márcio Gilberto Zangeronimo ◽  
Gustavo Freire Resende Lima
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Nitrogen Excretion ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Body Weights ◽  
Ideal Protein ◽  
Fat Level ◽  
Calcium And Phosphorus ◽  
Acid Reduction

The need for suitable diets in chickens, considering the ideal protein concept associated with phytase, is important in order to improve the productivity of birds. The aim of this study was to assess the need for the correction of amino acid levels in the diets of broilers, by using different combinations of crude protein (CP) supplemented with phytase. For performance, eight days old Cobb 875 broiler chicks, with initial body weights of 155 ± 1.4g were used. The birds were distributed in a completely randomised design with seven treatments (nutritional plans) and five replicates of 25 birds. For the metabolism trial, 300 birds were selected which were also distributed using the same design, but with five, four and three birds per experimental stage: 8-21 days, 22-35 days and 36- 42 days. The nutritional plans consisted of different combinations of CP in diets with reduced calcium and phosphorus, supplemented with phytase and amino acids. The reduction of amino acids in diets with reduced levels of CP resulted in an increased intake, feed conversion and abdominal fat level, and decreased the yield of thigh + drumstick. The inclusion of phytase reduced the excretion of calcium and phosphorus, but increased nitrogen excretion when the CP was not reduced. As a result, this study concluded that the reduction of amino acids to 3.5%, supplemented with phytase and prepared according to a nutritional plan does not improve the performance and carcass characteristics of broilers, although it may reduce the emission of polluting elements by excreta.

Sign in / Sign up

Export Citation Format

Share Document