Macroscopic examination of multiple-shot cattle heads—an animalwelfare due diligence tool for abattoirs using penetrating captive bolt devices?

Andrew Grist*, Toby G. Knowles, Stephen Wotton

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)

234 Downloads (Pure)

Abstract

Ideally, the application of a penetrating captive bolt device to render cattle immediately unconscious prior to slaughter would be 100% effective. Unfortunately, due to various factors this is not always the case. This paper examined, as an initial proof of concept, 12 bovine heads which had received more than one shot from a penetrating captive bolt, collected from various abattoirs within the United Kingdom. The heads were frozen to facilitate splitting on the medial plane to prevent distortion of soft tissue and each sagittal section was examined macroscopically to ascertain if this method could be used to determine the reasons for repeated stun attempts. In 10 out of 12 heads, shot placement was the determining factor, in one other head it was felt that anatomical variation was the reason and the twelfth head demonstrated signs of gun malfunction as the likely cause. This work provides evidence for a larger trial to facilitate the production of guidance for the abattoir industry, the Animal Welfare Offcer and regulators on the examination of heads as part of an investigation of failures of a mechanical stunning system and to provide training material for slaughter staff tasked with effectively stunning cattle.

Original languageEnglish
Article number328
Number of pages9
JournalAnimals
Volume9
Issue number6
Early online date6 Jun 2019
DOIs
Publication statusPublished - 6 Jun 2019

Keywords

  • Abattoir
  • Animal welfare
  • Animal Welfare Offcer
  • Captive bolt
  • Cattle
  • Due diligence
  • Multiple stun attempts

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