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Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions
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Hot chicks, cold feet.

Randi Oppermann Moe1, Jon Bohlin2, Andreas Flø3

  • 1Norwegian University of Life Sciences, Faculty of Veterinary Medicine, Department of Production Animal Clinical Sciences, Animal Welfare Research Group, P.O. Box 8146 Dep., N-0033 Oslo, Norway.

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|May 23, 2017
PubMed
Summary
This summary is machine-generated.

Infrared thermography (IRT) revealed that broiler chickens' footpad temperatures decrease during restraint, while head temperatures increase, indicating stress. Factors like age and handling order influence these readings, crucial for veterinary diagnostics.

Keywords:
Animal welfareFootpadInfrared thermographyStress-induced hyperthermiaThermal imaging, chicken

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Area of Science:

  • Veterinary Medicine
  • Animal Physiology
  • Non-invasive Diagnostics

Background:

  • Infrared thermography (IRT) is a non-invasive method to measure surface body temperature.
  • IRT applications include monitoring stress, emotions, and leg pathologies in avian species.
  • Validating IRT for detecting subclinical footpad pathologies in broiler chickens is essential for veterinary diagnostics.

Purpose of the Study:

  • To investigate the effects of manual restraint on footpad and head temperatures in broiler chickens at different ages.
  • To assess the potential of IRT as a tool for diagnosing subclinical footpad pathologies.

Main Methods:

  • Manual restraint was applied to broiler chickens for 10 minutes.
  • Footpad and head region temperatures were measured using IRT.
  • Temperatures were recorded at two different ages (30 and 36 days).

Main Results:

  • Footpad temperatures significantly decreased during restraint (-0.45°C/min).
  • Head region temperatures increased during restraint (0.76°C/10min), consistent with stress-induced hyperthermia.
  • Temperature varied with age, handling duration, and sampling order, but age-related effects were confounded by conditioning.

Conclusions:

  • Handling and restraint duration significantly impact footpad temperature measurements in broiler chickens.
  • Age, previous handling experience, and sequential sampling order are critical factors to consider when using IRT for footpad pathology assessment.
  • IRT shows promise for non-invasive monitoring of broiler chicken health, but careful consideration of influencing factors is necessary for accurate diagnostics.