science-review.ru
Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454
ISSN 2500-3399
ПИ №ФС77-57454
ANALYSIS OF GROWTH OF RAINBOW TROUT WHICH HAS BEEN GROWN UP IN CAGES, BY USE OF METTHODS OF MATHEMATICAL STATISTICS
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Research results of the weight change of the rainbow trout (Parasalmo mykiss irideus) which has been grown in cages on Kotkozero Lake (Karelia) are presented in the article. The results were obtained with the use of methods of mathematical statistics. We have revealed that at increase in total body weight of a rainbow trout from 678,2 to 1515,4 g, its relative body weight without inner organs from 83,8 increased to 86,2 %. With increasing body weight from 1287,7 g to 1515,4 g increase the absolute growth of body weight, and slightly decreases the relative weight gain without internal organs (up to 90,5 %). As a result of the regression analysis the adequate model describing communication of body weight of an rainbow trout without inner organs (Y) with a total body weight of a trout (X) is received: Y=-37.43+0.88•X. The linear regression equation enables knowledge-based total body weight rainbow trout to predict its body weight without internal organs. The results are of practical importance for the regulation of the feeding process of the rainbow trout which has been grown in cages, and for sale of marketable fish.