Assessment of the biochemical status of Parasalmo mykiss walbaum in trout farming conditions as a basis for the development of a natural adaptogen based on green microalgae

Abstract

Increasing  the  output  of  aquaculture products is an important condition for supporting food security in Russia and ensuring the  socio-economic  development  of  the  regions. One of the key factors for the sustainable functioning of trout farms is the timely and  effective  prevention  of  the  occurrence and spread of diseases in farmed fish [8,10]. The purpose of the presented study was to monitor the condition of rainbow trout based on the assessment of biochemical and morphological blood parameters in age dynamics to identify critical periods and develop an adaptogen  from  green  microalgae  for  the correction  of  metabolic  processes.  In  the presented study, the hematological status of rainbow trout was studied in the conditions of the fisheries of the Republic of Karelia. The study was conducted in the summer in 4 age groups. During the research, it was revealed that the age of trout significantly affects  the  biochemical  blood  levels  studied. As a result of the research, it was revealed that in the studied animals with age there is a significant increase in such biochemical parameters  as  ALT,  Total  protein,  albumin, and urea. Thus, during the monitoring of the biochemical  status  of  rainbow  trout  under aquaculture conditions, it was found that the condition  of  the  fish’s  body  worsens  with age,  which  is  reflected  in  the  biochemical parameters  of the blood, such as total protein, albumin, and urea. In this case, green microalgae  Chlorella  can  act  as  a  natural adaptogen  that  normalizes  blood  biochemical  parameters  due  to  the  high  content  of available carotenoids. It has been established that the pigments chlorophyll a (6.68 mg/g) and carotenoids (3.36%) accumulate in noticeable quantities in the biomass of.