Effects of Stocking Density and Pre-Slaughter Handling on the Fillet Quality of Largemouth Bass (Micropterus salmoides): Implications for Fish Welfare

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F24%3A43908129" target="_blank" >RIV/60076658:12520/24:43908129 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3390/foods13101477" target="_blank" >https://doi.org/10.3390/foods13101477</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/foods13101477" target="_blank" >10.3390/foods13101477</a>

Result language

angličtina

Original language name

Effects of Stocking Density and Pre-Slaughter Handling on the Fillet Quality of Largemouth Bass (Micropterus salmoides): Implications for Fish Welfare

Original language description

There is currently insufficient acknowledgment of the relationship between fish welfare and ultimate fillet quality. The purpose of this study was to assess the impacts of pre-slaughter handling and stocking density as fish welfare markers on fillet quality of largemouth bass (Micropterus salmoides). Fish from three stocking densities of 35, 50, and 65 kg&lt;middle dot&gt;m(-3) were reared in a recirculating aquaculture system (RAS) for 12 weeks and received commercial feed. Ultimately, the fish were either stunned with percussion on the head (control group) or subjected to air exposure for 3 min (anoxia group) before stunning and subsequent collection of blood and fillet samples. Western blot analysis revealed the degradation of actin in both groups. Additionally, higher oxidation progress and lower hardness and pH were observed in anoxia compared to the control group. We observed higher hardness at 35 kg&lt;middle dot&gt;m(-3) in anoxia compared to 50 and 65 km(-3). The initial hardness values at 35, 50, and 65 km(-3) were 1073, 841, and 813 (g) respectively in the anoxia group. Furthermore, the anoxia and control groups had rigor mortis after 6 and 10 h, respectively. Cortisol and glucose levels, and oxidative enzymes activity were higher in anoxia than in the control group. In conclusion, oxidation induced by anoxia likely plays a crucial role as a promoter of the quality deterioration of largemouth bass fillets.

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

40401 - Agricultural biotechnology and food biotechnology

Project

<a href="/en/project/QK22020144" target="_blank" >QK22020144: Species and technological diversification of productive aquaculture in the Czech Republic with the aim to increase its efficiency and competitiveness</a><br>

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

Foods

ISSN

2304-8158

e-ISSN

2304-8158

Volume of the periodical

13

Issue of the periodical within the volume

10

Country of publishing house

CH - SWITZERLAND

Number of pages

17

Pages from-to

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UT code for WoS article

001233292100001

EID of the result in the Scopus database

2-s2.0-85194037604