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Electrocorticogram spectral analysis and somatosensory evoked potential as tools to assess electrical stunning efficiency in ducks
Abstract : 1. Fast Fourier transformations (FFTs) of electrocorticogram (ECoG) signals and averaging of somatosensory evoked potentials (SEPs) were used for assessing the impact of electrical stunning of ducks in a waterbath set to deliver a constant current of 150 mA, 600 Hz alternating current (AC) for 4 s. The effectiveness of stunning was determined on the basis of induction of epileptiform activity in the ECoG followed by a decrease in total power content to less than 10% of pre-stun values and abolition of SEPs. 2. One out of 10 birds was killed by the stun. FFT analysis of the ECoG signals of the remaining 9 birds showed that only one bird had a decrease of the total power to less than 10% of the pre-stun values for up to 70 s post-stun. The SEPs were retained in 6 out of 9 ducks and and 4 of them retained the evoked responses throughout the post-stun period. In the two birds showing abolition of SEPs, this was associated with a decrease in the total power content to below 10% of the pre-stun value. 3. The present experiment confirmed that the abolition of SEPs and the decrease of the total power below 10% of the pre-stun value for assessing unconsciousness after an electrical stunning in various species are also applicable to ducks. Based on this, it is concluded that electrical waterbath stunning of ducks using 150mA of 600 Hz AC is ineffective.
Mots-clés :
BIEN-ETRE ANIMAL
SOMATOSENSORIEL
https://hal.inrae.fr/hal-02675488
Déposant : Migration Prodinra <>
Soumis le : dimanche 31 mai 2020 - 17:40:38
Dernière modification le : jeudi 10 décembre 2020 - 14:19:02
Déposant : Migration Prodinra <>
Soumis le : dimanche 31 mai 2020 - 17:40:38
Dernière modification le : jeudi 10 décembre 2020 - 14:19:02
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