INSECTS IN THE FEED OF RAINBOW TROUT, ONCORHYNCHUS MYKISS (ACTINOPTERYGII, SALMONIDAE): EFFECT ON GROWTH, FATTY ACID COMPOSITION, AND SENSORY ATTRIBUTES

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F20%3A43900941" target="_blank" >RIV/60076658:12520/20:43900941 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.aiep.pl/volumes/2020/1_2/pdf/05_02785_F1.pdf" target="_blank" >https://www.aiep.pl/volumes/2020/1_2/pdf/05_02785_F1.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3750/AIEP/02785" target="_blank" >10.3750/AIEP/02785</a>

Jazyk výsledku

angličtina

Název v původním jazyce

INSECTS IN THE FEED OF RAINBOW TROUT, ONCORHYNCHUS MYKISS (ACTINOPTERYGII, SALMONIDAE): EFFECT ON GROWTH, FATTY ACID COMPOSITION, AND SENSORY ATTRIBUTES

Popis výsledku v původním jazyce

Background. An ongoing quest for alternative feed sources in global aquaculture includes insect breeding for feed and food production. The aim of this study was to evaluate the effect of partial to full replacement of commercial diets with live insects on growth and health parameters of rainbow trout, as well as on sensory and texture attributes and fatty acid composition of fish muscle. Material and methods. Five isocaloric diets containing commercial pellets and live insects were evaluated in rainbow trout, Oncorhvnchus mykiss (Walbaum, 1792), in a 60-day feeding trial. Control Group (K) was fed commercial pellets only. In other groups, 25% gross energy of pellets was replaced by live adult house cricket, Acheta domestica (Group C), live superworm, Zophobas mono larvae (Group L), or a combination of 12.5% crude energy of each (group LC). The insect-only group (I) was fed live cricket and superwonn only (50% by 50% crude energy). Results. No significant differences were found in growth, survival, feed conversion ratio (dry basis), or energy utilization between groups. The protein efficiency ratio was highest in Group K and decreased with increasing cricket proportion. Insect inclusion was associated with lower content of nutritionally valuable n-3 fatty acid in fish muscle. Subjective sensory evaluation of cooked fillets revealed significantly less acceptable taste, aroma, and aftertaste in Group I than for Groups K, L, and LC. Some differences were found in the whiteness and redness of fillets between groups. The control group had significantly lower hardness compared to those receiving insect diets. No gross morphological or histopathological anomalies of viscera in any group and no significant differences in 7-ethoxyresorufin-O-deethylase activity were observed. Conclusions. Live insects replaced the commercial diet of the equivalent caloric level without negative effects on the growth or health of rainbow trout. The lower content of n-3 fatty acids and differences in color and texture of fillets from fish fed insects may influence acceptability to consumers. The high cost of insects compared to commercial feed currently limits their widespread use in trout production.

Název v anglickém jazyce

INSECTS IN THE FEED OF RAINBOW TROUT, ONCORHYNCHUS MYKISS (ACTINOPTERYGII, SALMONIDAE): EFFECT ON GROWTH, FATTY ACID COMPOSITION, AND SENSORY ATTRIBUTES

Popis výsledku anglicky

Background. An ongoing quest for alternative feed sources in global aquaculture includes insect breeding for feed and food production. The aim of this study was to evaluate the effect of partial to full replacement of commercial diets with live insects on growth and health parameters of rainbow trout, as well as on sensory and texture attributes and fatty acid composition of fish muscle. Material and methods. Five isocaloric diets containing commercial pellets and live insects were evaluated in rainbow trout, Oncorhvnchus mykiss (Walbaum, 1792), in a 60-day feeding trial. Control Group (K) was fed commercial pellets only. In other groups, 25% gross energy of pellets was replaced by live adult house cricket, Acheta domestica (Group C), live superworm, Zophobas mono larvae (Group L), or a combination of 12.5% crude energy of each (group LC). The insect-only group (I) was fed live cricket and superwonn only (50% by 50% crude energy). Results. No significant differences were found in growth, survival, feed conversion ratio (dry basis), or energy utilization between groups. The protein efficiency ratio was highest in Group K and decreased with increasing cricket proportion. Insect inclusion was associated with lower content of nutritionally valuable n-3 fatty acid in fish muscle. Subjective sensory evaluation of cooked fillets revealed significantly less acceptable taste, aroma, and aftertaste in Group I than for Groups K, L, and LC. Some differences were found in the whiteness and redness of fillets between groups. The control group had significantly lower hardness compared to those receiving insect diets. No gross morphological or histopathological anomalies of viscera in any group and no significant differences in 7-ethoxyresorufin-O-deethylase activity were observed. Conclusions. Live insects replaced the commercial diet of the equivalent caloric level without negative effects on the growth or health of rainbow trout. The lower content of n-3 fatty acids and differences in color and texture of fillets from fish fed insects may influence acceptability to consumers. The high cost of insects compared to commercial feed currently limits their widespread use in trout production.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40103 - Fishery

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Acta Ichthyologica et Piscatoria

ISSN

0137-1592

e-ISSN

—

Svazek periodika

50

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

11

Strana od-do

171-181

Kód UT WoS článku

000553162900005

EID výsledku v databázi Scopus

2-s2.0-85085999730