Pathophysiology of free-bullet slaughter of horses and ponies.
Abstract: Forty-six equines were observed during routine commercial slaughter in an abattoir. The animals were shot once with a .22 calibre long rifle with hollow point rounds. Indicators of sensibility/insensibility were evaluated immediately after the shot (prior to exsanguination) and the resulting pathophysiology of free-bullet injury was assessed. All animals were rendered immediately insensible, with only one pony showing signs of a shallow depth of concussion, with an intermittently positive palpebral reflex but no other signs of brainstem function. All animals (100%) had some degree of damage to the structures of the brainstem or lobes of the cerebrums, while 41 (89%) had damage to the thalamus/hypothalamus. The bullet in one pony missed the brain but still caused mild damage to the thalamus, midbrain, pons and cerebellum, this animal had no signs of sensibility. The findings confirm that free-bullet shooting is an effective dispatch method for horses and ponies.
Copyright © 2015. Published by Elsevier Ltd.
Publication Date: 2015-06-12 PubMed ID: 26093383DOI: 10.1016/j.meatsci.2015.06.007Google Scholar: Lookup
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- Journal Article
- Research Support
- Non-U.S. Gov't
Summary
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This research work observed the effects and efficiency of .22 calibre bullet shooting as a method of slaughter in horses and ponies. The findings revealed that shooting effectively renders the animals immediately insensible, making it a valid method of euthanizing horses and ponies.
Study Methodology
- The study was carried out on a total of 46 horses and ponies during a regular commercial slaughter process within an abattoir.
- The researchers used a .22 calibre long rifle with hollow point rounds for the shooting operation.
- The sensibility or insensibility status of the animals were evaluated immediately after each horse or pony was shot, but before they were exsanguinated (drained of blood).
- Equine pathophysiology following the gunshot wounds was also assessed.
Observations and Findings
- All the horses and ponies were immediately rendered insensible after the gunshot, a crucial indicator in evaluating the humanitarian aspects of a slaughter method.
- The level of unconsciousness caused by the bullet varied, with only one pony showing signs of shallow concussion, characterized by an intermittently positive palpebral reflex but no other indications of brainstem activity.
- All animals (100%) experienced varying degrees of damage to their brainstem structures or cerebrum lobes; 41 (89%) had damage to their thalamus or hypothalamus region.
- In an atypical case, one pony’s brain was missed by the bullet, still, damage was caused to the thalamus, midbrain, pons, and cerebellum. This pony still showed no signs of sensibility.
Conclusions
- The research findings validated free-bullet shooting as an effective method for dispatching horses and ponies, as it swiftly renders them unconscious and insensible.
- This implies that the method is likely humane and could be generally acceptable for the euthanasia of large animals such as horses and ponies.
Cite This Article
APA
Gibson TJ, Bedford EM, Chancellor NM, Limon G.
(2015).
Pathophysiology of free-bullet slaughter of horses and ponies.
Meat Sci, 108, 120-124.
https://doi.org/10.1016/j.meatsci.2015.06.007 Publication
Researcher Affiliations
- Department of Production and Population Health, Royal Veterinary College, Hawkshead Lane, Hatfield AL9 7TA, United Kingdom. Electronic address: tgibson@rvc.ac.uk.
- Department of Production and Population Health, Royal Veterinary College, Hawkshead Lane, Hatfield AL9 7TA, United Kingdom.
- Department of Production and Population Health, Royal Veterinary College, Hawkshead Lane, Hatfield AL9 7TA, United Kingdom.
- Department of Production and Population Health, Royal Veterinary College, Hawkshead Lane, Hatfield AL9 7TA, United Kingdom.
MeSH Terms
- Abattoirs
- Animals
- Brain / physiopathology
- Brain Concussion / physiopathology
- Female
- Horses
- Linear Models
- Male
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