Influence of Electronarcosis on Behavioral Responses,Blood Markers,and Fillet Properties of Silver Catfish (Rhamdia quelen) |
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| Authors: | Juliana C Veit Jaqueline Piccolo Grasiela Facco Aline F Scherer Bernardo Baldisserotto Gessi Koakoski |
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| Institution: | 1. Núcleo Integrado de Desenvolvimento em Análises Laboratoriais (NIDAL), Departamento de Tecnologia e Ciência dos Alimentos, Universidade Federal de Santa Maria, Brazil;2. Departamento de Fisiologia e Farmacologia, Universidade Federal de Santa Maria, Santa Maria, Brazil;3. Faculdade de Agronomia e Medicina Veterinária, Universidade de Passo Fundo, Passo Fundo, Santa Maria, Brazil |
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| Abstract: | Behavioral responses, blood markers, and fillet properties were investigated after silver catfish exposure to different electric field strengths, frequency, and duration of electric current in the preslaughter stunning. All combinations of electric fields and frequencies were able to stun fish. Longer apparent stun was obtained at the intermediate electrical frequencies. High electric field strength detracted the texture of fillets. At least 5 s was required to stun fish, and longer exposure to electrical current did not prolong the apparent stun or damage fillet properties. Results indicate that silver catfish are relatively resistant to electronarcosis. |
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| Keywords: | electrical stunning fish welfare behavior stress flesh properties unconsciousness |
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