A humane protocol for electro-stunning and killing of Nile tilapia in fresh water

Lambooij, E.; Gerritzen, M.A.; Reimert, H.G.M.; Burggraaf, D.; Vis, J.W. van de

doi:10.1016/j.aquaculture.2008.01.026

Cited by 45 publications

(29 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In line with previous studies, electricity is becoming widely used for stunning several farmed fish species by applying an electrical current into the water (Lambooij et al, 2008;Lambooij et al, 2013;Roth et al, 2004) or after dewatering (Erikson et al, 2012;Llonch et al, 2012;Sattari et al, 2010). Furthermore, the method appeared to be suitable for improving fish welfare onboard commercial fishing vessels .…”

Section: Discussionsupporting

confidence: 55%

Untitled

Daskalova¹,

Павлов²,

Kyuchukova³

et al. 2016

Turk. J. Fish. Aquat. Sci.

View full text Add to dashboard Cite

Fish welfare at slaughter is an area of considerable scientific and commercial importance during the last decade. The aim of this study was to evaluate the effect of three stunning procedures on stress and meat quality of common carp. The experimental fish were separated in three groups and stunned by percussion (Group PS), electricity (Group ES) or asphyxia (Group AS), followed by decapitation. Blood cortisol and glucose concentrations were measured as stress indicators, whereas drip loss was used as meat quality parameter. The lowest glucose concentration (3.86±1.26 mmol/L) and drip loss (2.02±0.42%) were observed in Group PS. On the contrary, Group AS showed the highest results (11.34±3.07 mmol/L and 3.22±0.75% for blood glucose and drip loss, respectively), whereas the electrically stunned carp took an intermediate position (6.05±1.29 mmol/L and 2.29±0.43%). We conclude that percussive stunning leads to considerable reduction of stress at slaughter and better meat quality (lower drip loss), whereas asphyxia is unacceptable method due to the strong stress reaction and increased drip loss. Electrical stunning can be an effective method for stunning carp, but requires improvements of the electrical device to eliminate the repeated current application.

show abstract

Section: Discussionsupporting

confidence: 55%

Untitled

Daskalova¹,

Павлов²,

Kyuchukova³

et al. 2016

Turk. J. Fish. Aquat. Sci.

View full text Add to dashboard Cite

show abstract

“…This method causes epileptiform activity or complete suppression of nerve function, resulting in immediate unconsciousness and insensibility to pain (Llonch et al 2012). Many factors may influence the effectiveness of this technique, such as the type of electrical current, frequency, voltage, water conductivity, fish species and time to reach unconsciousness (Lambooij et al 2008).…”

Section: Introductionmentioning

confidence: 99%

“…However, there are few studies evaluating how the stress provoked by stunning methods affects the quality of tilapia meat (Lambooij et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Effects of different stunning methods on blood markers and enzymatic activity of stress responses of tilapia (Oreochromis niloticus)

Baldi

Parisi

Costa

et al. 2018

Italian Journal of Animal Science

View full text Add to dashboard Cite

“…According to the results, the treatments with 200 and 150 Volts (DC) received higher scores (48 and 40 points, respectively, Table 2), with increased bleeding in the fillets. Studies on other fish species also reported increase in bleeding when electrical current was applied for desensitization (Lambooij et al, 2008;Vargas et al, 2013). The presence of hemorrhage may compromise the meat quality, once consumers prefer to buy fish fillets with a light color or natural color characteristic of the species (Pullela et al, 2000), otherwise it may indicate failures in fish processing or storage.…”

Section: Sensory Evaluationmentioning

confidence: 98%

“…For all treatments, no vigorous attempt to escape (grade 2) was observed (Table 1). According to Lambooij, Gerritze, Reimert, Burggraaf, & van de Vis (2008), no matter how small the voltage of alternating or direct current is, it is capable of causing confusion in fish, which may be the reason to why pacus were not able to recover quickly the escape attempt after application of electrical current.…”

Section: Behavioral Assessmentmentioning

confidence: 99%

<b>Impact of electrical stunning on fish behavior and meat quality of pacu (<i>Piaractus mesopotamicus</i>)

et al. 2016

View full text Add to dashboard Cite

ABSTRACT. Electrical stunning is considered one of less stressful fish stunning method. However, for its efficiency, it is important to determine the best way of application of the electrical variables. The aim of this study was to evaluate the effect of different voltages (100, 150, and 200 V) of alternating current (AC) or direct current (DC), frequency of 50 Hz, for 180 s exposure, concerning the aspects of behavior and meat quality of pacu (Piaractus mesopotamicus). Fish subjected to AC remained unconscious longer, evaluated by behavior analysis, when compared to DC. The pacu subjected to 100 AC, 200 AC and 100 DC showed less bleeding in the fillets. The lightness (L*) of the fillets were higher in 150 AC, 150 DC and 100 DC, followed by 200 and 100 AC. The redness (a*) in pacu fillets were moderate in treatments 200 and 150 AC and less intense in treatments 100 DC and 100 AC. The yellowness (b*) was higher in fish fillets treatment 150 DC and lower in 100 AC. Therefore, the 200 V alternating current (AC) used in water stunning caused apparent unconsciousness of up to 4 min. after exposure and less bleeding in fillets, thus it is a suitable stunning method to be recommended for the pacu processing industry.

show abstract

A humane protocol for electro-stunning and killing of Nile tilapia in fresh water

Cited by 45 publications

References 17 publications

Untitled

Untitled

Effects of different stunning methods on blood markers and enzymatic activity of stress responses of tilapia (Oreochromis niloticus)

<b>Impact of electrical stunning on fish behavior and meat quality of pacu (<i>Piaractus mesopotamicus</i>)

Contact Info

Product

Resources

About