Study of the main processes in production of fermented feedstuffs from wastes of fish processing
Physicochemical, sanitary, and hygienic characteristics of wastes after processing of mass commercial fish species from the Far-Eastern Seas are determined. Kinetics of the wastes zymosis with protosubtilin is defined; its rational regime for production of feedstuffs with high biological value is substantiated experimentally. The yield of fermented pastes and their chemical parameters depend on technique of centrifugation in the process of the hydrolysate concentrating. Several kinds of feedstuffs, including fermented feed pastes with high content of easily digestible proteins and essential amino acids as lysine, threonine, leucine, and valine, could be produced from fish wastes using the consequence of zymosis, bones removing, and centrifugation. These feedstuffs are recommended for using in livestock farming, taking into account their chemical, mineral, and amino acidic composition.