Stunning intervention. | Electrical parameters | Â | Stunning success | Injuries/ mis-hits | Time until exsanguination | Behavioural signs at time of slaughtering | ||
---|---|---|---|---|---|---|---|---|
Water conductivity [μS/cm; MIN-MAX] | Voltage [V; MIN-MAX] | Electric current densities [A/dm2; MIN-MAX] | Stunning time (seconds or minutes) | [%; (n/total number of fish)] | [%; (n/total number of fish)] | [seconds or minutes; MIN-MAX] | [%; (n/total number of fish)] | |
Stunning by percussion (n = 8 stunning interventions) | ||||||||
1 | n.a. | n.a. | n.a. | n.a. | 83.0 (7/11) | 0.0 (0/11) | 60–95 s. | 27.0 (3/11) |
2 | n.a | n.a | n.a | n.a | 95.0 (19/20) | 50.0 (4/8) | 15–20 s. | 0.0 (0/20) |
3 | n.a | n.a | n.a | n.a | 95.0 (19/20) | 70.0 (7/10) | 15–30 min. | 5.0 (1/20) |
4 | n.a. | n.a | n.a | n.a. | 100.0 (20/20) | 10.0 (1/10) | 5–10 min. | 0.0 (0/20) |
5 | n.a. | n.a. | n.a. | n.a. | 100.0 (20/20) | 10.0 (1/10) | 20 s. – 5 min. | 0.0 (0/20) |
6 | n.a. | n.a. | n.a. | n.a. | 80.0 (16/20) | 50.0 (5/10) | 10–20 min. | 10.0 (2/20) |
7 | n.a. | n.a. | n.a. | n.a. | 100.0 (10/10) | 100.0 (10/10) | 2–5 min. | 0.0 (0/10) |
8 | n.a. | n.a. | n.a. | n.a. | 95.0 (19/20) | 50.0 (5/10) | 20–25 min. | 10.0 (1/10) |
Summary Percussion (N = 8) | n.a | n.a | n.a | n.a | 92.2 (130/141) | 41.8 (33/79) | 15 s. – 30 min. | 5.3 (7/131) |
Electrical stunning (a: in a water bath,n = 9 stunning interventions;b: on wet electrodes outside the water, n = 1 stunning intervention) | ||||||||
9a | 453 | 36–47 | 0.0163–0.0213 | 3 min. | 100.0 (10/10) | 10.0 (1/10) | 2–5 min. | 0.0 (0/10) |
10a | 334 | 33–36 | 0.0245–0.0267 | 1 min. | 70.0 (14/20) | 60.0 (6/10) | 60–90 s. | 35.0 (7/20) |
11a | 613 | 36 | 0.0061 | 30–45 s. | 100.0 (10/10) | 0.0 (0/10) | 10–120 min. | 0.0 (0/10) |
12a | 604 | 36 | 0.0064 | 30–45 s. | 100.0 (10/10) | 0.0 (0/10) | 10–120 min. | 0.0 (0/10) |
13a | 438 | 34 | 0.0196 | 60 s. | 100.0 (20/20) | 20.0 (2/10) | 20–90 min | 10.0 (1/10) |
14a | 969 | 20 | 0.121 | 20 s. | 20.0 (2/10) | 30.0 (3/10) | 2–4 min. | 80.0 (8/10) |
15a | 910 | 20 | 0.114 | 20 s. | 20.0 (2/10) | 30.0 (3/10) | 2–4 min. | 70.0 (7/10) |
16a | 756 | 230 | 0.435 | 30 s. | 95.0 (19/20) | 20.0 (2/10) | 2 min. | 10.0 (1/10) |
17a | 756 | 230 | 0.435 | 30 s. | 95.0 (19/20) | 40.0 (4/10) | 2 min. | 10.0 (1/10) |
19b | 209 | 53.3 | Not measurable | 2 min. | 95.0 (19/20) | 70.0 (7/10) | 2–5 min. | 10.0 (1/10) |
Summary Electrical stunning (N = 10) | 334–969 | 20–230 | 0.0061–0.435 | 20 s. – 3 min. | 83.3 (125/150) | 28.0 (28/100) | 1–120 min. | 23.6 (26/110) |
Electrical stunning followed by percussion (c: electrical stunning in a water bath, n = 2;d: electrical stunning first on wet electrodes outside the water followed by electrical stunning in a water bath, n = 1) | ||||||||
20c | 577 | 37.6 | 0.0434 | 20 s. | 100.0 (10/10) | 20.0 (2/10) | 20 s. | 0.0 (0/10) |
21c | 822 | 28.5 | 0.146 | 1 min. | 100.0 (6/6) | 0.0 (0/6) | 60–90 s. | 0.0 (0/6) |
22d | 441 | 36 | 0.1359 | 8 min (3 min dry, 5 min in water) | 100.0 (20/20) | 0.0 (0/10) | 2–5 min. | 0.0 (0/10) |
Summary Electrical stunning followed by percussion (N = 3) | 577–822 | 28.5–37.6 | 0.0434–0.146 | 20 s. – 8 min. | 100.0 (26/26) | 12.5 (2/16) | 20 s. – 5 min. | 0 (0/16) |