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Efficiency of low versus high airline pressure in stunning cattle with a pneumatically powered penetrating captive bolt gun

Oliveira, S E O; Gregory, N G; Costa, F A D; Gibson, T J; Rodrigues Paranhos Da Costa, M J

Authors

S E O Oliveira

N G Gregory

F A D Costa

T J Gibson

M J Rodrigues Paranhos Da Costa



Abstract

The efficiency of stunning cattle was assessed in 443 animals (304 pure Zebu and 139 crossbred cattle), being mainly mature bulls and cows. Cattle were stunned using a Jarvis pneumatically powered penetrating captive bolt gun operating with low (160–175 psi, N = 82) and high (190 psi, N = 363) airline pressure, which was within the manufactures specifications. Signs of brain function and the position of the shots on the heads were recorded after stunning. Velocity of the captive bolt and its physical parameters were calculated. Cattle shot with low pressures showed more rhythmic respiration (27 vs. 8%, P < 0.001), less tongue protrusion (4 vs. 12%, P = 0.03) and less masseter relaxation (22 vs. 48%, P < 0.001). There was an increased frequency of shots in the ideal position when cattle were shot with the low compared to high airline pressures (15.3 vs. 3.1%). Bolt velocity and its physical parameters were significantly (P < 0.01) higher when using high pressure. Airline pressures below 190 psi are inappropriate when shooting adult Zebu beef cattle with pneumatically powered penetrating captive bolt guns.

Citation

Oliveira, S. E. O., Gregory, N. G., Costa, F. A. D., Gibson, T. J., & Rodrigues Paranhos Da Costa, M. J. (2017). Efficiency of low versus high airline pressure in stunning cattle with a pneumatically powered penetrating captive bolt gun. Meat Science, 130, 64-68. https://doi.org/10.1016/j.meatsci.2017.04.007

Journal Article Type Article
Acceptance Date Apr 4, 2017
Publication Date Apr 13, 2017
Deposit Date Apr 21, 2017
Publicly Available Date Mar 29, 2024
Journal MEAT SCIENCE
Print ISSN 0309-1740
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 130
Pages 64-68
DOI https://doi.org/10.1016/j.meatsci.2017.04.007
Public URL https://rvc-repository.worktribe.com/output/1392317

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