Résumé:
Fishery products play a very important role in the economic activity of the major countries of the countries of the world.
For this purpose the objective of our project of end of study consists in making a valorization of the coproducts from fishing at the level of the port of Mostaganem namely the discards of the biological material of two fish identified the small dogfish Sycoliorhius canicula and the ray Mobula mobular for the manufacture of fishmeal with an artisanal method.
The obtained flours contain in general between 65 and 67% of proteins (from 60 to 72%), not more than 12% of lipids no more than 12% lipids, about 10% minerals and a maximum of 10% water (to guarantee the stability of the product). These proportions vary according to the type of co-product and the species used. Species used.
Fish meal is traditionally used as animal feed, mainly for pigs and chickens, but during the last decade, an increasing share of the of the production - representing less than 10% of the world aquaculture production - has been used to feed aquaculture production - has been used to feed carnivorous farmed aquatic species (such as salmon, shrimp, sea bass shrimp, sea bass, sea bream, etc).
While an approach to making meal from the co-products of small and skates, by a simple artisanal technique has revealed very satisfactory results as well on the more qualitative as quantitative.
The results obtained show high protein contents in the final products (65%, 67%) respectively. The flour obtained is also partly rich in lipids but rich in proteins.
The different germs sought in our products are germs capable of altering the marketability of the flour (total flora at 30°C), these germs potentially pathogenic germs (Salmonella, Staphylococcus) and germs that indicate fecal contamination (fecal coliforms) as well as technological indicator germs (total enteric coliforms (total coliforms enterobacteria).
