Aliphos® SodiPhos:
A
A new derivative of Aliphos feed phosphates
by Aliphos, Belgium
fter initial laboratory testing and real scale pilot plant testing, Aliphos will bring to the market Aliphos® SodiPhos, a monosodium phosphate which will be produced in our factory in Varna, Bulgaria: content consisting of 24 percent phosphorus (P) and 19 percent sodium (Na). Monosodium phosphate (MSP) is characterised by the fact that the phosphorus is bound to sodium, delivering a product which is almost completely water soluble (For more details see Figure 1).
Figure 1
Solubility of phosphorus of an inorganic feed phosphate is highly correlated with its availability or better digestible phosphorus content. The higher the solubility the higher the digestibility. However, this relation is not always very strict and to assess exact phosphorus digestibility values we still have to rely on In Vivo trials. From literature it’s known that MSP has one of the highest digestible P-level amongst the feed phosphates on the market. See, for example, the summary of the values given by the CVB-table. Because of the fact that SodiPhos contains sodium contrary to normal feed phosphates which contain calcium (Ca), like DCP and MCP, gives SodiPhos special application features. SodiPhos can (partially) replace salt or sodium (Bi) carbonate in feed formulations; this can play a role in the production of broiler feeds, in which the chlorine content is limited thereby replacing salt with sodium (Bi) carbonate. SodiPhos does not contain chlorine but is a source of highly digestible phosphorus instead. For milk cows before calving, SodiPhos can be used as a Ca-free phosphorus source. With the phosphorus instantly available for the rumen microbes, because of the high solubility, by this preventing any imbalance in rumen fermentation. Other uses for SodiPhos is in baby piglet feed, pet and horse food and not the least, as a highly digestible P-source for aquatic feeds. Certainly, for shrimp farming, SodiPhos (MSP) is often the product of choice, replacing MCP in the formulations because there is no demand for Ca by shrimp raised in brackish and saltwater. A high Ca-level acts even as an antagonist and decreases the P-digestibility for shrimp. www.aliphos.com Table 1: Summary of the CVB-table, dP-values Phosphate DCP.2H2O DCP.0H2O MDCP.H2O MCP.H2O MSP.H2O
aP% poultry
dP% pigs
79 65 82 83 89
78 55 79 85 91
Table 2: Solubility of different inorganic feed in vitro and in vivo rumen fluids. Feed phosphate DCP M(D)CP MSP DFP
16 | November 2019 - International Aquafeed
phosphates
Rumen In vivo
Ruminal fluid In vitro
61.5 87.6 100 39.7
29.7 55.9 100 1.3