Исследование физико-механических и химических свойств комбикормов с погонами дезодорации для осетровых рыб

Abstract

Breeding sturgeons in aquaculture is the only way to preserve them as a raw material for fish food products today. In this regard, not only the need for the development of commercial sturgeon breeding is obvious, but also the importance of research aimed at studying and developing optimal modes of industrial cultivation of different species of sturgeon. The aim of the work is to expand the range of compound feed for sturgeons, at the expense of unused reserves for expanding the food base, which are by-products of the oil and fat industry, in particular, deodorization cuts. Based on the study of the classical technology for obtaining feed for valuable fish species and eliminating its shortcomings, a technology has been developed for the production of pseudo-encapsulated feed with a content of more than 20% fat in it and vitamins adapted for various types of sturgeons grown in the Central Federal District of the Russian Federation. In the proposed technology for the production of feed for valuable fish species, pseudocapsulation of granules with fat absorbers with oil and fat waste, for example, deodorization cuts, is carried out in a plate granulator. On the basis of the studies performed, it was found that in order to introduce an increased fat content of deodorization cuts (more than 20%) into the composition of pseudoencapsulated compound feed, it is necessary to use fat absorbers, which can be recommended as silicon dioxide aerosil. When using silicon dioxide aerosil, it is possible to ensure the inclusion of up to 20-30% fat of deodorization cuts in the feed composition in a ratio of 1:4, without worsening the technological properties of the finished product.