• 1. Baysinger A, Senn M, Gebhardt J, Rademacher C, Pairis-Garcia M. A case study of ventilation shutdown with the addition of high temperature and humidity for depopulation of pigs. J Am Vet Med Assoc. 2021;259(4):415424.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 2. Leary S, Anthony R, Gwaltney-Brant S, et al. AVMA guidelines for the de-population of animals: 2019 edition. AVMA. Accessed August 25, 2021. https://www.avma.org/sites/default/files/resources/AVMA-Guidelines-forthe-Depopulation-of-Animals.pdf

    • Search Google Scholar
    • Export Citation
  • 3. Pork Checkoff. In: PQA Plus Version 4 Education Handbook. National Pork Board; 2018:36. Accessed August 25, 2021. http://www.porkcdn.com/sites/all/files/documents/PQAPlus/V4.0/Forms/PQAv4e_Handbook.pdf

    • Search Google Scholar
    • Export Citation
  • 4. Arruda AG, Beyene TJ, Kieffer J, Lorbach JN, Moeller S, Bowman AS. A systematic literature review on depopulation methods for swine. Animals (Basel). 2020;10(11):2161. doi:10.3390/ani10112161

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 5. EFSA Panel on Animal Health and Welfare (AHAW), Saxmose Nielsen S, Alvarez J, et al. Welfare of pigs during killing for purposes other than slaughter. EFSA J. 2020;18(7):e06195. doi:10.2903/j.efsa.2020.6195

    • Search Google Scholar
    • Export Citation
  • 6. Mote B. Validation of a mobile electrocution system for humane mass de-population of swine – NPB #20-123. National Pork Board. Accessed August 25, 2021. https://porkcheckoff.org/wp-content/uploads/2021/02/20-123-MOTE-final-rpt.pdf

    • Search Google Scholar
    • Export Citation
  • 1. Baysinger A, Senn M, Gebhardt J, Rademacher C, Pairis-Garcia M. A case study of ventilation shutdown with the addition of high temperature and humidity for depopulation of pigs. J Am Vet Med Assoc. 2021;259(4):415424.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 2. Pork Checkoff. PQA Plus Version 4 Education Handbook. National Pork Board. http://www.porkcdn.com/sites/all/files/documents/PQAPlus/V4.0/Forms/PQAv4e_Handbook.pdf

    • Search Google Scholar
    • Export Citation
  • 3. Leary S, Anthony R, Gwaltney-Brant S, et al. AVMA guidelines for the de-population of animals: 2019 edition. AVMA. https://www.avma.org/sites/default/files/resources/AVMA-Guidelines-for-the-Depopulation-of-Animals.pdf

    • Search Google Scholar
    • Export Citation
  • 4. Helman RS. Heat stroke. Medscape. https://emedicine.medscape.com/article/166320-overview#a5

  • 1. Leary S, Anthony R, Gwaltney-Brant S, et al. AVMA guidelines for the depopulation of animals: 2019 edition. AVMA. https://www.avma.org/sites/default/files/resources/AVMA-Guidelines-for-the-Depopulation-of-Animals.pdf

    • Search Google Scholar
    • Export Citation
  • 2. Mote B. Validation of a mobile electrocution system for humane mass depopulation of swine – NPB #20-123. National Pork Board. Accessed September 13, 2021. https://porkcheckoff.org/wp-content/uploads/2021/02/20-123-MOTE-final-rpt.pdf

    • Search Google Scholar
    • Export Citation
  • 3. Volk JO, Schimmack U, Strand EB, Vasconcelos J, Siren CW. Executive summary of the Merck Animal Health Veterinarian Wellbeing Study II. J Am Vet Med Assoc. 2020;256(11): 12371244.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 4. Epstein Y, Yanovich R. Heatstroke. N Engl J Med. 2019;380(25):24492459.

  • 5. Sneed PK, Matsumoto K, Stauffer PR, Fike JR, Smith V, Gutin PH. Interstitial microwave hyperthermia in a canine brain model. Int J Radiat Oncol Biol Phys. 1986;12(10):18871897.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 6. Britt RH, Lyons BE, Ryan T, Saxer E, Obana WG, Rossi G. Effect of whole body hyperthermia on auditory brainstem and somatosensory and visual-evoked potentials. In: Hales JRS, ed. Thermal Physiology. Raven; 1984:519523.

    • Search Google Scholar
    • Export Citation
  • 1. Fingland FB, Stone LR, Read EK, Moore RM. Preparing veterinary students for excellence in general practice: building confidence and competence by focusing on spectrum of care. J Am Vet Med Assoc. 2021;259(5):463470.

    • Crossref
    • Search Google Scholar
    • Export Citation

Advertisement

Letters to the Editor

Ventilation shutdown

The JAVMA recently published a report1 on the use of ventilation shutdown with high temperature and humidity (VSD+TH) for de-population of 243,016 pigs. While the report suggests its findings could guide future use of this method, my conclusion differs: ventilation shutdown, in any form, entails enormous suffering for the animals involved, and our profession must urgently take measures to ensure it is never used again.

The AVMA Guidelines for the Depopulation of Animals find that, in some circumstances, VSD is acceptable if at least 95% mortality is achieved within an hour.2 The