Emma Bradbury

I. INTRODUCTION Calcium (Ca) and phosphorus (P) are essential minerals for many biological processes and skeletal health, however, they have a complex interactive relationship. Phytate is the naturally occurring storage form of P in plants, with the main storage site of phytate-P being seeds (Tamim et al., 2004). As poultry diets are comprised mainly of seed based ingredients, there is a considera ...

BACKGROUNDCalcium (Ca) is an essential nutrient for poultry that is generally provided to laying hens at approximately 4.6% of the total feed volume.  Calcium is usually supplied to layers as a calcite grit or flour i.e. limestone (CaCO3) and also as part of the inorganic phosphorus (P) supplye.g. dicalcium or monocalcium phosphate.  Though, in some markets, meat and bone meal may also c ...

I. INTRODUCTION Calcium (Ca) is an essential nutrient for poultry for biological processes such as bone development and egg shell formation (De Vries et al., 2010). Laying hens must be provided with Ca at approximately 4% of the total feed volume. Very little Ca is provided within the cereal grain component of the diet, therefore diets must be supplemented with sources of Ca. Dietary Ca is provide ...