ARTICLE FEED & ADDITIVE MAGAZINE February 2021 57 There are 2 main key points before considering this nutritional strategy: 1. A detailed understanding of the substrate (phytate-P and total dietary fibre) is essential and is achieved by implementing regular quality control checks to avoid under but especially overestimating the use of phytase. 2. Enzyme product reliability to ensure confidence in the matrix values. This strategy means the inclusion of an inorganic source of phosphate will be reduced and even removed from the formulation completely, especially in the grower and finisher phases in poultry. This is only feasible if you have a detailed understanding of the substrate and in using the latest generation phytase like Quantum Blue. Recent research (Poernama et al., 2020, in press) has shown that using 1500 FTU/kg of Quantum blue allowed all MCP to be removed from 10 to 42 days with no loss in performance or bone ash compared with broilers fed a diet with MCP throughout. Phosphorus savings for this study were 0.23% available P for a diet containing 0.25% PP. For the overall period this means a reduction of 31.7 kg MCP/ton of feed which represents a saving of 15€-/ton of feed when the price for phosphate is 480€/ton but can be 31.7€/ton of feed when MCP price reaches 1000€/ton like in 2008. Apart from the savings related to P release from phytate bound P, the savings due to application of MMN in amino acids and energy also has a significant influence in the final production cost. AB Vista has conducted extensive research to further understand the quantity of amino acids, minerals and energy that can be spared using higher doses of Quantum Blue phytase in combination with Signis or Econase XT. For a standard feed containing an average of 0.25% PP, the use of 1500 FTU/kg compared with 500 FTU/kg can increase the feed cost savings by 6€/ ton when considering the full nutrient savings of the enzyme. This concept will also contribute to a reduction in the environmental impact caused as a result of optimising the use of P from dietary PP and reducing the inclusion of inorganic phosphate, which is a non-renewable resource, while giving the producer a tool to fit with its objectives of balancing production cost and maintaining growth performance. *Phosphorus: an essential component and different systems of evaluation
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