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Sequential Behavior of Broiler Chickens in Enriched Environments under Varying Thermal Conditions Using the

Juliana Maria Massari1, Daniella Jorge de Moura1, Irenilza de Alencar Nääs2

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Environmental enrichment helps broiler chickens adapt to heat stress by altering their behavior patterns. Data mining with the Generalized Sequential Pattern (GSP) algorithm identified these changes, showing enrichment improves welfare.

Keywords:
animal behavioranimal welfaredata miningenvironmentmachine learningprecision livestock farming

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Area of Science:

  • Animal Behavior
  • Data Mining
  • Animal Welfare

Background:

  • Behavior analysis is crucial for assessing animal adaptation and well-being.
  • Conventional statistics overlook temporal sequences in behavioral data.
  • Environmental enrichment can improve broiler welfare and mitigate heat stress.

Purpose of the Study:

  • To validate the Generalized Sequential Pattern (GSP) algorithm for analyzing broiler chicken behavior.
  • To identify temporal correlations between heat stress and behavior in enriched environments.
  • To assess the impact of environmental enrichment on broiler adaptation to heat stress.

Main Methods:

  • Automated video image collection over 48 hours.
  • Analysis of a 7-hour period (12 PM - 6 PM) across two days.
  • Application of the GSP algorithm to identify behavioral sequences in enriched and non-enriched environments under comfort and heat stress conditions.

Main Results:

  • Comfort temperatures showed specific behavioral sequences (e.g., <{Ld,P}>, <{E,W,F}>) in both environments.
  • Heat stress significantly reduced the number of observed sequential patterns.
  • Lateral lying (Ll) behavior, indicative of heat stress, was prevalent only in the non-enriched environment.

Conclusions:

  • The GSP algorithm effectively identifies temporal behavioral patterns in broiler chickens.
  • Environmental enrichment alters broiler behavioral patterns and enhances adaptation to heat stress.
  • Enrichment may provide broiler chickens with better coping mechanisms for environmental challenges like heat.