Evaluation of different feeding frequencies in RAS-based juvenile pikeperch (Sander lucioperca) aquaculture br

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F23%3A43906199" target="_blank" >RIV/60076658:12520/23:43906199 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.aquaculture.2022.738815" target="_blank" >https://doi.org/10.1016/j.aquaculture.2022.738815</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.aquaculture.2022.738815" target="_blank" >10.1016/j.aquaculture.2022.738815</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of different feeding frequencies in RAS-based juvenile pikeperch (Sander lucioperca) aquaculture br

Popis výsledku v původním jazyce

Feeding regime, which involve selection of appropriate diet and application of feed itself is a decisive factor in intensive, RAS-based production system - more so, for carnivorous fish culture. It is critical for the economics, resource (feed/nutrients) use efficiency and final profit yield. The present study examined different feeding strategies in juvenile pikeperch reared in RAS for growth performance, survivability, feed utilization, and fish welfare. Juvenile pikeperch (106.59 +/- 24.84 g) were cultured in RAS for 112 days and fed at five different feeding intervals (2-h, 4-h, 6-h, 8-h and 12-h) using automatic feeder Imetronic (R) (Pessac, France). Fishes were fed a commercially standardized pikeperch diet. A higher degree of growth heterogeneity was observed in groups fed in shorter feeding intervals (2-h, 4-h and 6-h). At the end of the experiment, slightly higher fin damage was observed in all tested groups compared to fin conditions of stocked fish especially for dorsal and caudal fins. No significant differences were observed in selected biochemical parameters indicating liver, pancreas, and intestinal function. All tested fish were adequately fed providing sufficient nutrients for proper pikeperch growth and welfare. Nevertheless, the feeding interval 8-hour was evaluated as optimal. This frequency supports higher fish conditions (Fulton&apos;s coefficient) and the specific growth rate (SGR), survival rate (SR), weight heterogeneity (CV2), lower fin erosion compared to the other tested frequency and optimal level of biochemical parameters in blood plasma.

Název v anglickém jazyce

Evaluation of different feeding frequencies in RAS-based juvenile pikeperch (Sander lucioperca) aquaculture br

Popis výsledku anglicky

Feeding regime, which involve selection of appropriate diet and application of feed itself is a decisive factor in intensive, RAS-based production system - more so, for carnivorous fish culture. It is critical for the economics, resource (feed/nutrients) use efficiency and final profit yield. The present study examined different feeding strategies in juvenile pikeperch reared in RAS for growth performance, survivability, feed utilization, and fish welfare. Juvenile pikeperch (106.59 +/- 24.84 g) were cultured in RAS for 112 days and fed at five different feeding intervals (2-h, 4-h, 6-h, 8-h and 12-h) using automatic feeder Imetronic (R) (Pessac, France). Fishes were fed a commercially standardized pikeperch diet. A higher degree of growth heterogeneity was observed in groups fed in shorter feeding intervals (2-h, 4-h and 6-h). At the end of the experiment, slightly higher fin damage was observed in all tested groups compared to fin conditions of stocked fish especially for dorsal and caudal fins. No significant differences were observed in selected biochemical parameters indicating liver, pancreas, and intestinal function. All tested fish were adequately fed providing sufficient nutrients for proper pikeperch growth and welfare. Nevertheless, the feeding interval 8-hour was evaluated as optimal. This frequency supports higher fish conditions (Fulton&apos;s coefficient) and the specific growth rate (SGR), survival rate (SR), weight heterogeneity (CV2), lower fin erosion compared to the other tested frequency and optimal level of biochemical parameters in blood plasma.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40103 - Fishery

Projekt

<a href="/cs/project/QK22020144" target="_blank" >QK22020144: Druhová a technologická diverzifikace produkčního rybářství v ČR s cílem podpořit jeho efektivitu a konkurenceschopnost</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Aquaculture

ISSN

0044-8486

e-ISSN

1873-5622

Svazek periodika

562

Číslo periodika v rámci svazku

neuvedeno

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

—

Kód UT WoS článku

000869573500005

EID výsledku v databázi Scopus

2-s2.0-85138101460