Relationship of captive bolt stunning location with basic tissue measurements and exposed cross-sectional brain area in cadaver heads from market pigs.

Autor: Anderson K; Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI., Ries E; Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI., Backes J; Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI., Bishop K; Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI., Boll M; Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI., Brantner E; Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI., Hinrichs B; Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI., Kirk A; Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI., Olsen H; Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI., Risius B; Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI., Bildstein C; Bunzl Processor Division, Riverside, MO., Vogel KD; Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI.
Jazyk: angličtina
Zdroj: Translational animal science [Transl Anim Sci] 2019 Jun 27; Vol. 3 (4), pp. 1405-1409. Date of Electronic Publication: 2019 Jun 27 (Print Publication: 2019).
DOI: 10.1093/tas/txz097
Abstrakt: The objective of this study was to contrast the soft tissue thickness, cranial thickness, total tissue thickness, cross-sectional brain area, and bolt-brain contact from the common frontal application of captive bolt euthanasia with the alternative location behind the ear in cadaver swine heads. Twenty-three cadaver heads from pigs that were approximately 136 kg and 6 mo of age were collected from a regional slaughter establishment following CO 2 stunning and assigned to either the FRONTAL ( n = 11) or the CAUDAL TO PINNA ( n = 12) application of the captive bolt. The soft tissue thickness was different ( P < 0.0001) between the 2 applications (FRONTAL: 8.3 ± 3.4 mm; CAUDAL TO PINNA: 56.5 ± 3.4 mm). The cranial thickness was different ( P < 0.0001) between the applications (FRONTAL: 23.4 ± 2.9 mm; CAUDAL TO PINNA: 26.5 ± 2.9 mm). There was also a difference ( P < 0.0001) in the total tissue thickness between the 2 applications (FRONTAL: 31.7 ± 3.8 mm; CAUDAL TO PINNA: 73.4 ± 3.8 mm). Cross-sectional area was calculated from images collected immediately after the heads were cut along the plane of bolt travel by bandsaw and was different ( P = 0.0028) between the 2 applications (FRONTAL: 25.2 ± 1.3 cm 2 ; CAUDAL TO PINNA: 18.9 ± 1.3 cm 2 ). Bolt-brain contact was also assessed from the images, and a difference ( P = 0.0360) between the 2 applications (FRONTAL: 100 ± 10.5%; CAUDAL TO PINNA: 66.7 ± 10.5%) was identified. The results of this study suggest that the FRONTAL application may provide a bolt path with less tissue to travel through when compared with the CAUDAL TO PINNA application for pigs of the approximate age and weight of those in this study. Ultimately, the FRONTAL location may present less risk for the captive bolt euthanasia of swine at market weight at this time. Additional refinement of the CAUDAL TO PINNA procedure and modification to the captive bolt device to penetrate to a suitable depth to ensure brain damage is recommended.
(© The Author(s) 2019. Published by Oxford University Press on behalf of the American Society of Animal Science.)
Databáze: MEDLINE
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