INORGANIC FEED PHOSPHATE IN AQUACULTURE: WINDMILL® AQUAPHOS, THE phosphorus SOURCE DESIGNED FOR FISHES.  

Zwart Sjo, Aliphos Rotterdam BV sjo.zwart@aliphos.com
Willems Emilie, Aliphos Rotterdam BV emilie.willems@aliphos.com
 
Aliphos Rotterdam BV
Zevenmanshaven Oost 139 3133CA Vlaardingen, The Netherlands

Phosphorus in aquaculture?

P is required for optimum growth, feed efficiency and bone development. Unlike other minerals, fish can't meet P requirements via uptake from the water. Thus a supplementation via the feed is essential. However diets for fish are changing. Less fish meal is used being replaced by vegetal protein sources. Vegetal protein sources have a low level of available P. Therefore inorganic feed phosphates must be added in the diets. They contain a high level of total and digestible P. Nevertheless wide differences remain among inorganic feed phosphates.

What is Windmill® Aquaphos?

Windmill® Aquaphos is a feed phosphate especially designed and produced by Aliphos for use in aquaculture nutrition. Windmill® Aquaphos is a highly soluble feed grade monoammonium phosphate. This high P solubility explains why Windmill® Aquaphos has the highest P-digestibility and P-retention amongst all feed phosphates used in aquafeeds, as proven in several trials with different aquaculture species.

Value of Windmill® Aquaphos in aquaculture

Over the past 13 years, Aliphos has carried out several trials to show the effectiveness of Windmill® Aquaphos on P-digestibility (dig.) and P-retention (ret.). Trials involved salmonids, sea bream and tilapia. The outcome of all these trials showed the same trend: Windmill® Aquaphos being a higher digestible or retainable phosphorus source than the normally used monocalcium and dicalcium phosphate

On average Windmill® Aquaphos scores a P-bioavailability (based on P-digestibility and P-retention) of 90%. Contrary to MCP which reaches a value of only 67%. If used correctly, 6.4kg of Windmill® Aquaphos can replace 10kg of MCP. Creating space in formulations and saving but also lowering P-excretion in to the environment.