Recovery of consciousness in hogs stunned with CO2: Physiological responses

Bolaños-López, D.; Mota-Rojas, Daniel; Guerrero‐Legarreta, Isabel; Flores-Peinado, S.; Mora-Medina, Patricia; Roldán-Santiago, P.; Borderas-Tordesillas, F.; García‐Herrera, Ricardo; Ortega, María Elena Trujillo; Ramírez-Necoechea, R.

doi:10.1016/j.meatsci.2014.05.034

Cited by 7 publications

(6 citation statements)

References 25 publications

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“…Bolanos‐Lopez et al. () suggested that bleeding should be performed as soon as possible after pigs exiting the gas.…”

Section: Assessmentmentioning

confidence: 99%

“…Under batch or group stunning situations, the duration of unconsciousness and insensibility becomes more critical because the time interval between the end of exposure to the gas and sticking (stun-to-stick interval) would be considerably longer for the last animal in a group (Raj, 1999;Atkinson et al, 2012). Bolanos-Lopez et al (2014) suggested that bleeding should be performed as soon as possible after pigs exiting the gas.…”

Section: Outcome Table Onmentioning

confidence: 99%

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Welfare of pigs at slaughter

Nielsen¹,

Álvarez²,

Bicout³

et al. 2020

EFS2

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The killing of pigs for human consumption (slaughtering) can take place in a slaughterhouse or on farm. The processes of slaughtering that were assessed for welfare, from the arrival of pigs until their death, were grouped into three main phases: pre‐stunning (including arrival, unloading from the truck, lairage, handling and moving of pigs); stunning (including restraint); and bleeding. Stunning methods were grouped into three categories: electrical, controlled atmosphere and mechanical. Twelve welfare consequences the pigs can be exposed to during slaughter were identified: heat stress, cold stress, fatigue, prolonged thirst, prolonged hunger, impeded movement, restriction of movements, resting problem, negative social behaviour, pain, fear and respiratory distress. Welfare consequences and relevant animal‐based measures were described. In total, 30 welfare hazards that could occur during slaughter were identified and characterised, most of them related to stunning and bleeding. Staff were identified as the origin of 29 hazards, which were attributed to the lack of appropriate skill sets needed to perform tasks or to fatigue. Corrective and preventive measures for these hazards were assessed: measures to correct hazards were identified, and management was shown to have a crucial role in prevention. Outcome tables linking hazards, welfare consequences, animal‐based measures, origins and preventive and corrective measures were developed for each process. Mitigation measures to minimise welfare consequences are proposed.

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“…Bolanos‐Lopez et al. () suggested that bleeding should be performed as soon as possible after pigs exiting the gas.…”

Section: Assessmentmentioning

confidence: 99%

Section: Outcome Table Onmentioning

confidence: 99%

Welfare of pigs at slaughter

Nielsen¹,

Álvarez²,

Bicout³

et al. 2020

EFS2

View full text Add to dashboard Cite

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“…CO 2 combines with H 2 O to form H 2 CO 3 (carbonic acid) and leads to a metabolic and respiratory acidosis at the cellular level, as well as hyperglycaemia, hyperlactatemia, hypercapnia, and hyperkalaemia. 14 Our study, as it is, has some limitations. Firstly, we did not include a sheep EVLP control group from a laboratory-raised background.…”

Section: Discussionmentioning

confidence: 93%

“…Additionally, their pigs were CO 2 stunned. CO 2 combines with H 2 O to form H 2 CO 3 (carbonic acid) and leads to a metabolic and respiratory acidosis at the cellular level, as well as hyperglycaemia, hyperlactatemia, hypercapnia, and hyperkalaemia 14 …”

Section: Discussionmentioning

confidence: 99%

Establishing an economical and widely accessible donation after circulatory death animal abattoir model for lung research using ex vivo lung perfusion

Zhang

Moeslund

et al. 2022

Artificial Organs

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Background Ex vivo lung perfusion (EVLP), is a platform that allows simultaneous testing and treatment of the lungs. However, use of EVLP is costly and requires access to lab animals and accompanying facilities. To increase the use of EVLP for research, we developed a method to perform EVLP using abattoir procured lungs. Furthermore, we were also able to significantly decrease costs. Methods Six pair of lungs were procured from abattoir sheep. The lungs were then flushed and stored in ice for 3 h. A low‐flow (20% of cardiac output) approach, a tidal volume of 6 ml/kg bodyweight and total perfusion time of 3 h were chosen. Perfusion fluids and circuits were self‐made. Lung biopsies, perfusate collection, respiratory values, circulatory pressures were recorded and hourly blood gas analyses were performed. Results Mean pO2 remained stable from 60 min (49.3 ± 7.1 kPa) to 180 min (51.5 kPa ± 8.0), p = 0.66. Pulmonary artery pressure remained ≤15 mm Hg and the left atrial pressure remained between 3 and 5 mm Hg and peak respiratory pressures ≤20 cmH2O. Lactate dehydrogenase increased from start (96.3 ± 56.4 U/L) to the end of perfusion (315.8 ± 85.0 U/L), p < 0.05. No difference was observed in ATP between procurement and post‐EVLP, 129.7 ± 37.4 μmol/g protein to 132.0 ± 23.4 μmol/g, p = 0.92. Conclusions Sheep lungs, acquired from an abattoir, can be ex vivo perfused under similar conditions as lab animal lungs with similar results regarding e.g., oxygenation and ATP restoration. Furthermore, costs can be significantly reduced by making use of this abattoir model. By increasing accessibility and lowering costs for experiments using lung perfusion, more results may be achieved in the field of lung diseases.

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“…However, these changes may not in fact translate into an improvement in animal welfare (ibid.). Other research also finds that it is good for animal welfare to reduce as much as possible the waiting period for pigs between the time they leave the stunning chamber and death (Bolaños-López et al 2014) as they have psychological responses after stunning as well. In sum, it is good to slaughter animals as fast as possible.…”

Section: P E R C E P T I O N S O F S L a U G H T E R : L I T E R A T mentioning

confidence: 99%

Cultural Identities in Sustaining Religious Communities in the Arctic Region: An Ethnographic Analysis of Religiosity from the Northern Viewpoint

Yeasmin

2017

Journal of Ethnology and Folkloristics

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Northern countries are facing the challenges of declining human capital, and admitting immigrants, many of whom belong to religious minorities, to satisfy the demand for labour. If northern societies accept multiculturalism and immigrants, they should not disregard the cultures and religious practices (for example, ritual slaughter) of immigrants, as they need to survive and integrate as a minority community in a secular society. However, there is clash between secularism and religions permitting animal slaughter, which is prohibited by some and allowed by other European countries. Community viability and sustainability depend partly on the exercise of community beliefs and ideology that support identity behaviour. This study will present an ethnographic analysis of the religiosity related to ritual slaughter and Muslim cultural identity in the European Arctic region and explore how religious relativism and practice sustain the community and support the overall integration of the Muslim minority in the North.

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Recovery of consciousness in hogs stunned with CO2: Physiological responses

Cited by 7 publications

References 25 publications

Welfare of pigs at slaughter

Welfare of pigs at slaughter

Establishing an economical and widely accessible donation after circulatory death animal abattoir model for lung research using ex vivo lung perfusion

Cultural Identities in Sustaining Religious Communities in the Arctic Region: An Ethnographic Analysis of Religiosity from the Northern Viewpoint

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