23-06-2020

Effect of phytase on nutrients


Natural phytases

Some components contain natural phytases that can break down the phytate phosphorus and have been shown to contribute to some extent to the utilization of phytate phosphorus in bone formation in chickens. Phytase activity in cereals is affected by the variety in the compositions, age of grain, drying conditions and storage, and pelleting temperature. Therefore, in the absence of studies for each batch of grains, it will be difficult to accurately predict phytase activity.

Recipes with natural phytase use a large number of components, which might cause problems with viscosity in birds, or large amounts of fiber, so it will be difficult to meet the needs of nutrients to achieve optimum performance in birds in a cost-effective manner. This method also requires the use of cold feed or granulation, as natural phytases are not heat resistant up to 70-80°C.

Effect of phytase on nutrients

The addition of phytase indeed relieve some, but not all connected phosphorus, which allows to reduce the amount of inorganic phosphorus in the compilation of the most feed mixes. This leads to economical savings through the use of phytase. To reduce the amount of total phosphorus in the compound, there must be clarity on the content and bioavailability of different sources, and the real need of phosphorus for broilers, layers, parental forms other birds.

Along with the release of phosphorus by phytase, it is possible that other nutrients exhibit higher solubility, or in the case of minerals - retention. It is known that positively charged (cationic) minerals such as calcium, zinc, copper, cobalt, iron, magnesium, nickel and manganese, form complexes with phytate phosphorous and show higher levels of liberation in the presence of phytase.

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