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Assessing Physiological and Behavioral Stress Parameters in Trained Goats During Repeated Blood Sampling.

Jennifer Meier1, Hildegard Just2, Matthias Steinfath1

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Repeated blood sampling did not increase stress in trained goats. Instead, their voluntary approach to the procedure improved, showing habituation and positive reinforcement benefits in animal care.

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Area of Science:

  • Animal Behavior and Welfare
  • Veterinary Diagnostics
  • Stress Physiology

Background:

  • Blood sampling is a common but potentially stressful procedure in animals.
  • Repeated stress can lead to negative anticipation or habituation.
  • Understanding animal responses to repeated procedures is crucial for welfare.

Purpose of the Study:

  • To evaluate the impact of repeated blood sampling on the affective state of goats.
  • To assess physiological and behavioral stress responses to venipuncture over time.
  • To investigate the role of cooperative veterinary care training in mitigating stress.

Main Methods:

  • Eight dairy goats underwent weekly blood sampling for four months.
  • Stress parameters measured included serum cortisol, eye temperature (infrared thermography), and behavioral ethograms.
  • Animals were managed with gentle handling and cooperative care training.

Main Results:

  • No significant changes were observed in serum cortisol concentrations or eye temperature over the study period.
  • Goats showed a significant increase in voluntary approach behavior towards the blood sampling station.
  • Behavioral data indicated habituation and positive responses to the procedure over time.

Conclusions:

  • Repeated blood sampling, when combined with positive reinforcement and gentle handling, did not induce measurable physiological stress in trained goats.
  • Cooperative care training enhances animal willingness to participate in necessary procedures.
  • Habituation and positive associations can effectively mitigate stress associated with routine veterinary interventions.