European perch (Perca fluviatilis) fed dietary insect meal (Tenebrio molitor): From a stable isotope perspective

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F21%3A43902705" target="_blank" >RIV/60076658:12520/21:43902705 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.aquaculture.2021.737265" target="_blank" >https://doi.org/10.1016/j.aquaculture.2021.737265</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aquaculture.2021.737265" target="_blank" >10.1016/j.aquaculture.2021.737265</a>

Result language

angličtina

Original language name

European perch (Perca fluviatilis) fed dietary insect meal (Tenebrio molitor): From a stable isotope perspective

Original language description

Stable isotope analysis was conducted to investigate stable isotope ratios of carbon (delta C-13) and nitrogen (delta N-15), diet-tissue discrimination factors of carbon (Delta C-13) and nitrogen (Delta N-15). Bayesian mixing models were performed to assess relative contribution of insect meal and other ingredients to the development of tissues of European perch (Perca fluviatilis). Accordingly, four experimental formulations, characterized by the increasing inclusion levels of yellow mealworm (Tenebrio molitor) larvae meal (TM) at 0, 6.8, 13.5 and 20.3% as replacement for fishmeal at 0 (TM0), 25 (TM25), 50 (TM50) and 75% (TM75), respectively, were fed to juvenile perch (initial bodyweight, 20.81 +/- 3.36 g) in a recirculated aquaculture system for 105 days. delta C-13 and delta N-15 of TM were -16.75 and 3.53% and significantly distinguished from other terrestrial and marine feed components (P &lt; 0.05). Inclusion of dietary TM did not affect Delta C-13 value in blood and liver (P &gt; 0.05) but did reduce in muscle (P &lt; 0.05), whereas Delta N-15 was significantly increased with the increasing inclusion level of TM in all tissues (P &lt; 0.05). The growth of perch had a significant negative relationship with diet-muscle Delta N-15. The contribution of TM to muscle (7.7 +/- 3.8%) was comparable to its dietary inclusion (6.8%) in TM25 but double in the blood (13 +/- 6%). TM appeared to be an essential ingredient incorporated into liver, as its contribution was consistent or higher than dietary inclusion (TM25: 25.4 +/- 12.1 vs. 6.8%; TM50: 31.1 +/- 14.9 vs. 13.5%; and TM75: 29.4 +/- 14.4 vs. 20.3%). The higher inclusion levels of TM (more than 6.8%) did not elevate its contribution to muscle, blood, and liver (probability, P-BIC &lt; 0.95) but significantly decreased that of fishmeal in all tissues (P-BIC &gt; 0.95). Soy-derived ingredients, soybean meal and soy protein, were an important ingredient in the development of all tissues regardless of dietary TM. The present study provided insightful information on the role of various diet components in perch tissues, which could underlie further development of aquafeed formulations for emerging perch farming in Europe.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

40103 - Fishery

Project

<a href="/en/project/QK1810296" target="_blank" >QK1810296: The use of alternative components and innovative techniques in fish nutrition</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Aquaculture

ISSN

0044-8486

e-ISSN

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Volume of the periodical

545

Issue of the periodical within the volume

neuveden

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

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UT code for WoS article

000691825400003

EID of the result in the Scopus database

2-s2.0-85111988764