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Individual Ranging Behaviour Patterns in Commercial Free-Range Layers as Observed through RFID Tracking.

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Area of Science:

  • Animal Behavior
  • Poultry Science
  • Ethology

Background:

  • Free-range systems are increasingly common for laying hens.
  • Understanding ranging behavior is crucial for hen welfare and productivity.
  • Individual variation in behavior is a key aspect of animal science.

Purpose of the Study:

  • To investigate individual variation in the ranging behavior of commercial free-range laying hens.
  • To quantify hen movement patterns across different outdoor zones.
  • To determine factors influencing range use duration and frequency.

Main Methods:

  • Radio Frequency Identification (RFID) technology was used to track individual hens.
  • Two commercial free-range flocks were monitored over a study period.
  • Outdoor areas were categorized into three zones based on distance from the shed: veranda, close range, and far range.

Main Results:

  • A high proportion of hens (68.6% Flock A, 82.2% Flock B) accessed the range daily.
  • Most ranging hens utilized all three outdoor zones (73.7% Flock A, 84.5% Flock B).
  • Hens spent approximately half of their outdoor time in the veranda area.
  • Individual consistency in daily range use varied significantly, with more consistent hens spending more time overall on the range (p < 0.001).

Conclusions:

  • Significant individual variation exists in laying hen ranging behavior.
  • Hen consistency in daily range use is positively correlated with total time spent ranging.
  • These findings contribute to understanding the implications of ranging for laying hen welfare and management.