+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

The effects of dietary levels of inorganic phosphorus calcium and cholecalciferol on the digestibility of phytate phosphorus by the chick

The effects of dietary levels of inorganic phosphorus calcium and cholecalciferol on the digestibility of phytate phosphorus by the chick

British Journal of Nutrition 66(2): 251-260

Male broiler chicks (1-d-old; Ross one) were given either a control diet containing recommended levels of phosphorus, calcium and cholecalciferol or experimental diets low in P and with variable levels of Ca (normal and low) and cholecalciferol (normal or high). The low-P diet with normal levels of Ca and cholecalciferol induced a hypophosphataemia and a hypercalcaemia which was reflected in reduced tibia length and weight and in reduced Ca, P and magnesium contents of tibia. The phytate digestibility remained normal while the retention of P and Ca fell significantly. The lowering of Ca alone elevated phytate digestibility and restored P and Ca retention. The hypercalcaemia and hypophosphataemia remained and tibia mineralization remained impaired. The raising of cholecalciferol alone dramatically increased phytate digestibility and the retention of Ca and P. While this remedied the hypercalcaemia, the hypophosphataemia persisted as did the diminution of tibia weight. The simultaneous lowering of dietary Ca and elevation of cholecalciferol on low-P diets restored all variables to the levels for the control diet. Circulating levels of 1,25-dihydroxycholecalciferol were significantly elevated by low-P diets, more so with high cholecalciferol intakes. However, Ca did not influence 1,25-dihydroxycholecalciferol levels in plasma.

Please choose payment method:

(PDF emailed within 1 workday: $29.90)

Accession: 007895185

Download citation: RISBibTeXText

Related references

The effects of dietary levels of inorganic phosphorus, calcium and cholecalciferol on the digestibility of phytate-P by the chick. British Journal of Nutrition 66(2): 251-259, 1991

The effect of varying calcium and cholecalciferol levels on phytate digestibility and phosphorus utilization in broiler chickens fed wheat/canola meal diets supplemented with phytase enzyme. Poultry Science 77(SUPPL 1): 54, 1998

Inorganic phosphorus, organic phosphorus, and inorganic calcium in blood plasma from two breeds of chickens fed various levels of dietary calcium and phosphorus. Canadian Journal of Animal Science 53(3): 551-556, 1973

Effects of dietary phytate phosphorus levels on performance of growing finishing pigs and availability of phytate phosphorus. Chinese Journal of Animal Science 26(6): 5-8, 1990

Effect of Suboptimal Levels of Non-Phytate Phosphorus and Exogenous Phytase on Precaecal Digestibility of Phosphorus and Calcium in Laying Hens. Czech Journal of Animal Science 62(11): 473-481, 2017

Utilization of phytate phosphorus and calcium as influenced by microbial phytase, cholecalciferol, and the calcium: total phosphorus ratio in broiler diets. Poultry Science 76(1): 37-46, 1997

Dietary phosphorus depletion in sheep effects on plasma inorganic phosphorus calcium 1 25 dihydroxyvitamin d 3 and alkaline phosphatase and on gastrointestinal phosphorus and calcium balances. Journal of Agricultural Science 105(3): 623-630, 1985

Performance of broiler chicks fed high levels of cholecalciferol in diets containing sub-optimal levels of calcium and non-phytate phosphorus. Animal Feed Science and Technology 134(1-2): 77-88, 2007

Comparative Effects of Supplemental Phytase on Phytate-phosphorus Release and Bone Development at Two Levels of Dietary Phosphorus. FASEB Journal 18(4-5): Abst 857 5, 2004

Dietary phosphorus leaching and apparent phosphorus digestibility from different inorganic phosphorus sources for South African abalone (Haliotis midae L.). Aquaculture Nutrition 9(3): 169-174, 2003

Effects of calcium and phosphorus levels in the feed on serum calcium phosphorus alkaline phosphatase hydroxy proline and 25 hydroxy cholecalciferol levels and on the ash content of the 3rd metacarpal bone in pigs. Nordisk Veterinaermedicin 35(7-9): 273-286, 1983

Effects of dietary non-phytate phosphorus levels and supplemental phytase on the growth, bone performance and phosphorus excretion of Taiwan native chickens. Journal of the Chinese Society of Animal Science 32(1): 1-14, 2003

Methodology affects measures of phosphorus availability in growing broilers: Effects of calcium feeding strategy and dietary adaptation period length on true ileal phosphorus digestibility and predicted endogenous phosphorus losses1. Poultry Science 96(3): 611-621, 2016

Influence of dietary calcium concentrations and the calcium-to-non-phytate phosphorus ratio on growth performance, bone characteristics, and digestibility in broilers. Poultry Science 96(8): 2795-2803, 2017

Effects of dietary levels of phytate and inorganic phosphate on phytate breakdown and absorption of calcium and magnesium in rats. Nutrition Research. 11(7): 797-806, 1991