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Abstrakt
The Influence of Chankanay Zeolites as Feed Additives on the Chemical, Biochemical and Histological Profile of the Rainbow Trout (Oncorhynchus mykiss)
?ssel Paritova,Nurzhan Sarsembayeva,Bożena Łozowicka*,?mangeldy Maulanov,Gulnur Kuzembekova,Aida Abzhalieva,Piotr Kaczyński
This article presents the results of the influence of zeolites as feed additives on the chemical, biochemical and histological profile of fish. Research was conducted for 63 days using a rainbow trout from Turgen village (Kazakhstan). The studied material was zeolitic tuff from the Chankanay deposit as an additive to RGM-2M feed. The fish were fed with a normal diet, and the diet supplemented with 1%, 2%, 3% and 4% of natural zeolites. Pathomorphological and histological examinations of muscle tissues and internal organs of the rainbow trout were carried out. Additionally, lipid contents, FAs compositions and amino acid compositions were studied. The content of essential amino acids and proportion of essential amino acids to non-essential amino acids in the experimental group was higher than in the control group. Zeolite supplementation at the 4% inclusion level showed a high content of the amino acids. The results of this study confirmed that zeolites had a positive effect on the chemical, amino acid and fatty acid composition. The addition of natural zeolites to the feed does not cause pathological changes in the liver, muscles and other organs of the experimental fish, and no other negative effects were determined.