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The effects of food-related environmental complexity on litter directed behaviour, fear and exploration of novel stimuli in young broiler chickens

By K. Pichova, J. Nordgreen, C. Leterrier, L. Kostal, R. O. Moe

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Abstract

Stimulation of foraging behaviour during the first weeks of life by increasing environmental complexity such as scattering food items on the litter may be one way of preventing leg disorders, reducing fear and improving broiler welfare. However, studies on effects of access to various food based enrichment are inconclusive. Motivation of animals to search for resources in the litter may be driven by the motivational significance of the provided food resource. This study was conducted to test whether the motivational significance of food enrichment differentially affects activity, litter directed behaviours and fearfulness in broiler chickens. Chickens (120 chickens in three batches of 40 animals) were divided into four groups according to type of food-related enrichment: (1) mealworms (highly attractive), (2) whole wheat (less attractive), (3) wood shavings (no nutritional value), and (4) no enrichment. Enrichment materials were scattered on the litter daily for 12 days starting on day 6. On days 6, 9, 12 and 15 of age the chickens were video-recorded from 10 min before to 30 min after scattering. Duration and frequency of physical activity (time spent on legs), litter directed behaviour (litter pecking and scratching) and leg stretching were analysed from videos in 10-min intervals. All birds were subjected to a tonic immobility test (day 16) and a novel object test (day 17). Mealworm treatment induced a significant increase in activity, litter pecking and litter scratching ( p

Publication Title Applied Animal Behaviour Science
Volume 174
Pages 83-89
ISBN/ISSN 0168-1591
DOI 10.1016/j.applanim.2015.11.007
Language English
Author Address Slovak Academy of Sciences, Institute of Animal Biochemistry and Genetics, Moyzesova 61, 90028 Ivanka pri Dunaji, Slovakia.Katarina.Pichova@savba.sk
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Tags
  1. Angiosperms
  2. Animal behavior
  3. Animal nutrition
  4. Animals
  5. Animal welfare
  6. Birds
  7. Broilers
  8. Effect
  9. Enrichment
  10. Fear
  11. Feeding
  12. Feeding behavior
  13. Flowers
  14. Foraging
  15. Fowls
  16. Grains
  17. Grasses
  18. Nutrition
  19. peer-reviewed
  20. physical activity
  21. Plants
  22. Poultry
  23. Research
  24. stimulation
  25. vertebrates
  26. video recordings
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  1. peer-reviewed