ADDCON GmbH

- Fish Protein Concentrate (FPC) for Better Fish Silage

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Valuable resources are preserved and used thanks to the production of fish silage. Fish Protein Concentrate (FPC) is used in compound feed for piglets and to some extent for cattle and poultry.

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ENSILOX adds value to fish silage in many ways.
Utilizing fish protein concentrate from fish silage in compound feed for piglets (to some extent also cattle and poultry) represents a sustainable handling of the resources in the food chain. Using strong acid for the preservation of fish by-products is also an important action to prevent spreading of diseases in aqua culture. The antioxidant in ENSILOX preserves fish oils from oxidation, and makes it valuable for further processing. Fish oils are used for Bio-Diesel production.

The principle of making fish silage to preserve by-products for the feed industry

The principle of making fish silage is maceration, acidification and anaerobic storage in tanks. Ensilox is developed especially for this purpose, and supported by the use of Antiboil in the warm season, you have a complete solution.

Fish by-products are macerated to 1 mm particles and the preservative is applied. One can use either plain 85% formic acid or preferably ENSILOX, which also comprises an antioxidant to protect the oils. The application rate depends on the raw material, and varies from 1,5-3,5 weight %. The more bone the higher rate of acid is required to bring pH down to 3,5.

The application of  ENSILOX is followed by hydrolysis of the fish and particles are liquified. If pH increases upon storage, more acid (ENSILOX) must be applied to ensure pH is always below 4,2. In by-products from red fish (trout, salmon) pH should be below 3,7 to kill potential fish diseases. Fish silage can be stored for months in a storage tank (silo) provided the pH is under control. 

Fish silage is taken to the processing industry to produce fish protein concentrate (to be used in compound feed mainly for piglets, and to some extent for poultry and cattle) and fish oils (to be used for Bio-Diesel).

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