Phytase
Phytase is an enzymatic feed additive that catalyzes the breakdown of phytic acid (phytate), the main form of bound phosphorus in cereals and oilseeds. By using phytase, the release of organic phosphorus, calcium and other mineral elements from the plant fraction of the diet is increased, improving nutrient utilization and reducing the need for inorganic phosphates in the formulation. Phytase is most commonly supplied as a heat‑stabilized powder or granulate, or as a liquid product for post‑pellet application, with a clearly defined enzymatic activity (e.g. FTU/g). In poultry and swine nutrition it is a standard enzyme additive in complete feeds, concentrates and premixes to support feed conversion and reduce phosphorus excretion to the environment.
Source
- Phytase is typically produced by fermentation of selected microbial strains (e.g. Aspergillus niger, Escherichia coli, Trichoderma reesei), followed by purification and formulation into a feed grade enzyme.
- The enzyme is stabilized with carriers (e.g. mineral or organic carriers) and protective components to increase heat resistance during pelleting and storage.
- Feed grade phytase complies with current feed additive regulations (declared activity, recommended inclusion levels, safety profile).
Variations
- Different activity levels (e.g. 5,000, 10,000 FTU/g) tailored to various dosing systems and premix types.
- Powdered and granulated forms for inclusion in premixes and supplements, as well as liquid forms for post‑pellet spraying.
- Different degrees of heat stability (standard and high‑stability phytases) depending on pelleting and extrusion conditions.
Applications In The Industry
Poultry
In broilers, turkeys and layers, phytase is routinely used in complete feeds and concentrates based on corn, wheat and soybean meal to release phytate‑bound phosphorus and calcium. It enables formulation of diets with reduced levels of inorganic phosphates (e.g. monocalcium phosphate) while maintaining optimal growth, bone mineralization and performance. In starter, grower and finisher feeds it is applied according to defined matrix values for available phosphorus, calcium and energy, helping to reduce diet cost. In layers and breeders, phytase supports eggshell quality and stable production while lowering phosphorus output in manure.
Swine
In diets for piglets, growers and finishers, phytase is applied in complete feeds and concentrates based on cereals and soybean meal to increase the availability of phosphorus and calcium and improve digestion of phytate‑bound proteins. In piglet starter feeds, it improves utilization of phosphorus from plant ingredients and reduces the need for expensive inorganic phosphates while supporting optimal growth and skeletal development. In grower/finisher phases, it allows further reduction of total dietary phosphorus while maintaining feed conversion and average daily gain. In sow diets during gestation and lactation (where used), phytase supports mineral status and optimization of mineral supplementation costs.
Benefits Of Use
- Increases utilization of phytate‑bound phosphorus and calcium, reducing inorganic phosphate inclusion and overall mineral supplementation cost in poultry and swine feeds.
- Improves overall nutrient utilization (phosphorus, calcium, partly protein and energy), contributing to better feed conversion and consistent performance.
- Reduces phosphorus excretion in manure, lowering environmental impact and facilitating compliance with environmental regulations.
- Flexible application in premixes, supplements and complete feeds, with well‑defined matrix values for accurate nutritional evaluation in feed formulation.
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