Skip to main content

Table 3 Stunning and killing of carp: Overview of applied stunning methods, electrical parameters, stunning success and time

From: Stunning of common carp: Results from a field and a laboratory study

   Electrical parameters   Stunning success Injuries/ mis-hits Time until exsanguination Behavioural signs at time of slaughtering
Stunning procedure no. Number of fish N total: 113 Water conductivity [μS/cm; MIN-MAX] Voltage [V; MIN-MAX] Electrical current densities [A/dm2; MIN-MAX] Stunning time (min) [%; (n/total number of fish)] [%; (n/total number of fish)] [minutes; minimum - maximum] [%; (n/total number of fish)]
Stunning by percussion
 1 5 n.a. n.a. n.a. n.a. 80.0 (4/5) 20.0 (1/5) 0.5–2 60.0 (3/5)
 2 2 n.a n.a n.a n.a 100.0 (2/2) 100.0 (2/2) 30 0.0 (0/2)
 3 6 n.a n.a n.a n.a 50.0 (3/6) 0.0 (0/6) 0.5–1 50.0 (3/6)
Summary Percussion 13 n.a n.a n.a n.a 69.2 (9/13) 23.1 (3/13) 0.5–30 46.2 (6/13)
Electrical stunning
 4 10 453 47 0.0213 6 90.0 (9/10) 0.0 (0/10) 2 90.0 (1/10)
 5 6 337 36 0.0267 2 50.0 (3/6) 50.0 (3/6) 2.5 50.0 (3/6)
 6 10 n.a. (Dry stunning) n.a. n.a 1 80.0 (8/10) 10.0 (1/10) 1 20.0 (2/10)
 7 6 398 36 0.0276 1 50.0 (3/6) 0.0 (0/6) 0.5 50.0 (3/6)
Summary Electrical stunning 32 337–1179 36–47 0.0213–0.0276 1–6 71.9 (23/32) 12.5 (4/32) 0.5–2.5 28.1 (9/32)
Electrical stunning followed by percussion
 8 6 1200 33 0.0759 2 50.0 (3/6) 0.0 (0/6) 0.5–2 66.0 (4/6)
 9 10 441 54 0.0238 5 100.0 (10/10) 20.0 (2/10) 30 0.0 (0/10)
 10 10 526 39 0.0409 0.5 100.0 (10/10) 20.0 (2/10) 1–3 0.0 (0/10)
 11 2 / (Dry stunning) / / 1.5–2 100.0 (2/2) 50.0 (1/2) 1–3 0.0 (0/2)
 12 10 587 38 0.0441 0.5 90.0 (9/10) 0.0 (0/10) 0.5–2 10.0 (1/10)
 13 6 939 33 0.0808 1 100.0 (6/6) 0.0 (0/6) 0.5–1 16.7 (1/6)
 14 6 939 33 0.0808 1 100.0 (6/6) 0.0 (0/6) 2–5 16.7 (1/6)
 15 6 939 33 0.0808 1 100.0 (6/6) 0.0 (0/6) 0.5–1 0.0 (0/6)
 16 6 822 29 0.1464 2 100.0 (6/6) 0.0 (0/6) 0.5–1 0.0 (0/6)
 17 6 / (Dry stunning) / / 1.75 83.3 (5/6) 0.0 (0/6) 2–5 16.7 (1/6)
Summary Electrical stunning followed by percussion 68 441–959 29–54 0.0238–0.1464 0.5–5 92.6 (63/68) 7.4 (5/68) 0.5–30 11.8(8/68)