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Behavioral patterns in broiler chickens monitored with a multi-view tracking system.

Patricia Soster1, Thorsten Cardoen2, Camila Lopes Carvalho3

  • 1Department of Pathobiology, Pharmacology and Zoological Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke-Melle 9820, Belgium; Poulpharm, Izegem, Belgium.

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Summary
This summary is machine-generated.

Broiler chicken behavior, including activity and time at feeders/drinkers, changes with age and heat stress. High temperatures increase drinker use and decrease feeder visits, impacting broiler welfare.

Keywords:
BehaviourPoultryPrecision livestock farmingTemperature challengeVideo analysis

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Area of Science:

  • Animal Science
  • Ethology
  • Agricultural Engineering

Background:

  • Broiler chicken welfare assessment requires understanding behavioral changes throughout the production cycle.
  • Key behaviors include activity level, and time spent at feeder and drinker zones.
  • Environmental factors like high temperature and age significantly influence broiler behavior.

Purpose of the Study:

  • To monitor and analyze broiler chicken activity levels, feeder, and drinker zone usage over the production cycle.
  • To investigate the effects of time of day and experimentally induced high environmental temperatures on broiler behavior.
  • To understand activity dynamics and behavioral shifts influenced by age and heat exposure.

Main Methods:

  • Utilized a multi-camera system with YOLOv11 and SORT algorithms for accurate broiler tracking (MOTA: 0.81; IDF1: 0.89).
  • Monitored 1,120 Ross 308 broilers across four production rounds from 8 to 40 days of age.
  • Recorded video segments during different times of day and periods of induced heat stress (29.4 ± 1°C).

Main Results:

  • High environmental temperature increased time spent at the drinker zone and decreased time at the feeder zone; overall activity was unaffected.
  • Activity dynamics shifted, with high-intensity activity decreasing earlier and faster than medium and low activity as birds aged.
  • Behavioral patterns varied by time of day, with some activity and feeder use recovery in the evening post-heat challenge.

Conclusions:

  • Broiler behavior is significantly influenced by age and high environmental temperatures, impacting key welfare indicators.
  • The developed tracking system provides valuable insights into broiler behavior under controlled conditions.
  • Further validation of the system under commercial farming conditions is necessary.