A rainbow trout feeding behavior assessment (Oncorhynchus mykiss) when introducing a complex feed additive increasing digestibility-Reference-Cited by-同舟云学术

A rainbow trout feeding behavior assessment (Oncorhynchus mykiss) when introducing a complex feed additive increasing digestibility

Published:2023-10-13 Issue:3 Volume:2023 Page:36-46
ISSN:2073-5529
Container-title:Vestnik of Astrakhan State Technical University. Series: Fishing industry
language:en
Short-container-title:

Author:

Nikiforov-Nikishin Dmitry¹,Kochetkov Nikita Ilyich²,BAKHAREVA Anna Alexandrovna³,Nikiforov-Nikishin Aleksey Lvovich⁴,Nevalennyy Aleksandr Nikolaevich⁵

Affiliation:

1. K. G. Razumovsky Moscow State University of Technologies and Management (the First Cossack University)

2. K. G. Razumovsky Moscow State University of technologies and management (the First Cossack University)

3. K. G. Razumovsky Moscow State University of Technologies and Management (the First Cossack University)

4. K G. Razumovsky Moscow State University of technologies and management (the First Cossack University);

5. Astrakhan State Technical University

Abstract

The potential to enhance the nutritional appeal of standard formulated feeds for rainbow trout by incorporating an additive with attractant and/or stimulant properties is demonstrated in the study. To assess the feeding behavior of the fish the evaluation algorithm was developed using a specialized setup with two feeding points, along with automatic video recording of the outcomes. The components within the feed additive (89% rapeseed oil, 4% hemp oil, 5% lycopene, and 2% cinnamyl aldehyde) not only aid in improving its palatability but can also have a positive influence on the fatty acid composition of the feeds. It was revealed that the feed additive (at quantities of 0.3% and 0.5%) significantly augmented the attractiveness of the feeds resulting in an increased number of fish congregating in the feeding area and an elevated consumption rate. The computation of the index of relative attractiveness allowed to identify a noteworthy disparity between the experimental and control feeds. The data obtained from the study can recommend the investigated comprehensive feed additive for enhancing the digestibility of standard fish feeds.

Publisher

Astrakhan State Technical University

Subject

General Medicine

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