Optimizing Calcium, Phosphorus and Phytase Formulation in layer Diets
Published: November 4, 2014
Summary
BACKGROUND Calcium (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 (CaCO 3 ) and also as part of the inorganic phosphorus (P) supplye.g. dicalcium or monocalcium phosphate. Though, in some markets, meat and bone meal may...
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IFF - International Flavors & Fragrances
10 de noviembre de 2014
Hello there and many thanks for great paper. I would like to ask the authors to give their short view on how can high levels of Ca - as in layers - with its buffering capacity at gizzard level, but also with its chelating properties of phytate interfere with exogenous phytases?. Many thanks from Madrid, Rafa.
3 de marzo de 2015
Specific appetite for Calcium is known for many years. The pattern intake of a separate Calcium source is related to the time of the Calcium deposit.
The problem is related to the fact that birds ingested grit to " improve digestion".
We can suppose that birds receiving the highest level of Calcium are looking for grit.
14 de febrero de 2017
Sir which level of phosphorus is detrimental to shell thickness of egg
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