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Updated: Jul 15, 2025

Analysis of Electrocardiograms and Behavior in Mice from Pregnancy to Lactation Period
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Analysis of Electrocardiograms and Behavior in Mice from Pregnancy to Lactation Period

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Sensor-based behavioral patterns can identify heat-sensitive lactating dairy cows.

G Ranzato1,2, I Lora3, B Aernouts4

  • 1University of Padova, Department of Animal Medicine, Production and Health (MAPS), Viale dell'Università 16, 35020, Legnaro, (PD), Italy. giovanna.ranzato@phd.unipd.it.

International Journal of Biometeorology
|October 2, 2023
PubMed
Summary
This summary is machine-generated.

Dairy cows experiencing heat stress show altered behaviors. Heat-sensitive cows increase activity and chewing, indicating a need for precision monitoring and targeted interventions to manage heat stress effects.

Keywords:
BehaviorDairy cowHeat stressPrecision livestock farmingSensor data

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Area of Science:

  • Animal Science
  • Dairy Cattle Management
  • Precision Livestock Farming

Background:

  • Heat stress negatively impacts dairy cow health and productivity.
  • Limited research exists on diverse cattle behavioral responses during heat waves.

Purpose of the Study:

  • To investigate behavioral patterns of dairy cows during heat waves using precision farming sensors.
  • To identify heat-sensitive cows based on milk yield drops and behavioral deviations.

Main Methods:

  • Utilized precision livestock farming sensors (accelerometers) and milk yield data from 102 Italian Holstein cows.
  • Defined heat waves using the temperature-humidity index (THI > 72 for 5+ days).
  • Employed Wood's equation for lactation curve analysis and generalized estimating equations for behavioral analysis.

Main Results:

  • Heat waves led to increased herd chewing and activity, with decreased lying time.
  • Heat-sensitive cows exhibited significantly more chewing and activity (approx. 15 min/day, p < 0.05).
  • Milk yield drops, unrelated to health issues, identified heat-sensitive individuals.

Conclusions:

  • High-frequency sensor data can help identify individual cows needing personalized heat stress alleviation.
  • Understanding behavioral changes is crucial for effective dairy herd management during extreme heat.