Survey of the effectiveness of stunning procedures used in Spanish pig abattoirs

@article{Velarde2000SurveyOT,
  title={Survey of the effectiveness of stunning procedures used in Spanish pig abattoirs},
  author={Antonio Velarde and Marina Gispert and Luigi Faucitano and Xavier Manteca and Alejandro Diestre},
  journal={Veterinary Record},
  year={2000},
  volume={146},
  pages={65 - 68}
}
Two pig abattoirs (A and B) equipped with an automated head-only and head-to-chest electrical stunning system, and two (C and D) equipped with a manual carbon dioxide stunning system, were evaluated to compare the effectiveness of stunning in a total of 10,454 pigs slaughtered under commercial conditions. In the abattoirs with the electrical stunning system, the percentage of animals that responded to a nose prick was significantly lower (P<0.05) in abattoir B, where a higher current intensity… 

Assessment of cattle and pig welfare at stunning in commercial abattoirs

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For the majority of measures, any differences between slaughterhouses were found to be attributable to the installation itself and the management of the slaughterhouse, such as generalised fear, slipping and falling or stunning effectiveness, as opposed to measures taken to assess transport conditions or farm origin,such as lameness or sick and dead animals.

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The welfare of pigs during transport and slaughter.

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Effect of current intensity and duration on the effectiveness of head-only electrical stunning in pigs under commercial conditions.

After head-only electrical stunning of pigs sequential animal-based measurements were carried out right after stunning as well as before and after bleeding in order to analyse how unconsciousness is

Animal Welfare and Meat Quality Assessment in Gas Stunning during Commercial Slaughter of Pigs Using Hypercapnic-Hypoxia (20% CO2 2% O2) Compared to Acute Hypercapnia (90% CO2 in Air)

The results suggest that both gases provoked aversion and discomfort, but these were lower in pigs stunned with the N2 mixture compared to high CO2, and on the other hand, the stun quality of the N1 mixture was poorer than highCO2 stunning, given that more animals regained consciousness before sticking with theN2 gas mixture.

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