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Table 2 Electrical stunning of rainbow trout: electrical parameters and stunning success in the laboratory study

From: Is humane slaughtering of rainbow trout achieved in conventional production chains in Germany? Results of a pilot field and laboratory study

Electric current

Voltage [V]

Frequency

[Hz]

Stun Duration [s]

Position of electrodes

Current density

[A dm−2]

Stunning success

[n VOR/n total number of fish]

AC

50

50

30

head/ tail

0.13 ± 0.002

2/14

50

50

30

top/bottom

0.09 ± 0.001

0/10

50

50

30

lateral

0.23 ± 0.003

0/10

50

50

60

head/ tail

0.14 ± 0.003

0/14

50

50

60

top/ bottom

0.09 ± 0.001

0/10

50

50

60

lateral

0,24 ± 0.007

0/10

50

100

30

head/ tail

0.14 ± 0.005

0/10

50

100

30

top/bottom

0.10 ± 0.001

0/10

50

100

30

lateral

0.23 ± 0.003

0/10

50

100

60

head/ tail

0.14 ± 0.003

0/10

50

100

60

top/ bottom

0.09 ± 0.001

0/10

50

100

60

lateral

0,24 ± 0.007

0/10

50

1000

30

head/ tail

0.14 ± 0.004

0/10

50

1000

30

top/bottom

0.10 ± 0.001

1/10

50

1000

30

lateral

0.24 ± 0.005

0/10

50

1000

60

head/ tail

0.13 ± 0.003

0/11

50

1000

60

top/ bottom

0.10 ± 0.002

1/10

50

1000

60

lateral

0,25 ± 0.004

0/10

DC

50

n.a.

30

head/ tail

0.09 ± 0.008

1/16

50

n.a.

30

top/ bottom

0.07 ± 0.003

1/10

50

n.a.

30

lateral

0.18 ± 0.005

1/11

50

n.a.

60

head/tail

0.11 ± 0.00

0/13

50

n.a.

30

top/bottom

0.07 ± 0.00

0/10

50

n.a.

60

lateral

0.18 ± 0.00

0/10

  1. Conductivity of the water: 600 μS/cm; voltage: 50 V, given are mean ± standard deviation
  2. AC alternating current, DC direct current; position of electrode: plate electrodes positioned at head and tail, top and bottom; lateral: at lateral sides of stunned rainbow trout