Evaluation of brain damage resulting from penetrating and non–penetrating stunning in Nelore Cattle using pneumatically powered captive bolt guns

Oliveira, S E O; Dalla Costa, F A; Gibson, T J; Costa, O A D; Coldebella, A; Gregory, N G

doi:10.1016/j.meatsci.2018.07.016

Evaluation of brain damage resulting from penetrating and non–penetrating stunning in Nelore Cattle using pneumatically powered captive bolt guns

Oliveira, S E O; Dalla Costa, F A; Gibson, T J; Costa, O A D; Coldebella, A; Gregory, N G

Authors

S E O Oliveira

F A Dalla Costa

T J Gibson

O A D Costa

A Coldebella

N G Gregory

Abstract

Brain damage resulting from penetrating and non–penetrating stunning of Nelore cattle using pneumatically powered captive bolt guns was evaluated. Heads were shot using penetrating captive bolt gun with 160 psi (P1; n = 10), 175 psi (P2; n = 10), 190 psi (P3; n = 12), and non-penetrating operating with 220 psi (NP; n = 10). Skin and bone thickness, bolt penetration angle, bolt penetration depth, haemorrhage over the cerebral hemispheres and laceration were assessed. Only P1 had shots that failed to perforate the skull (n = 2; 20%). Bolt penetration depth and haemorrhage over the right cerebral hemisphere was significantly (P ≤ 0.05) greater for P3. Subarachnoid haemorrhage over the frontal, parietal and occipital lobes was higher for NP. Lacerations were observed only for penetrating gun in the cortical region of frontal and parietal lobes. Subarachnoid haemorrhage surrounding the brainstem and laceration in the midbrain and pons was only found for P3. Thus, penetrating captive bolt gun operating with 190 psi is more effective to achieve unconsciousness.

Citation

Oliveira, S. E. O., Dalla Costa, F. A., Gibson, T. J., Costa, O. A. D., Coldebella, A., & Gregory, N. G. (2018). Evaluation of brain damage resulting from penetrating and non–penetrating stunning in Nelore Cattle using pneumatically powered captive bolt guns. Meat Science, 145, 347-351. https://doi.org/10.1016/j.meatsci.2018.07.016

Journal Article Type	Article
Acceptance Date	Jul 11, 2018
Publication Date	Jul 18, 2018
Deposit Date	Jul 27, 2018
Publicly Available Date	Aug 1, 2019
Journal	MEAT SCIENCE
Print ISSN	0309-1740
Publisher	Elsevier
Peer Reviewed	Peer Reviewed
Volume	145
Pages	347-351
DOI	https://doi.org/10.1016/j.meatsci.2018.07.016
Public URL	https://rvc-repository.worktribe.com/output/1386526