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Influences of intermittent daily draught on the behaviour of weaned pigs

By C. J. M. Scheepens, M. J. C. Hessing, E. Laarakker, W. G. P. Schouten, M. J. M. Tielen

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Abstract

The influence of time-unpredictable draught (forced cold air) on the behaviour of pigs was observed in a climate-controlled pig house with 2 identical rooms each with 5 pens. Two days after farrowing, pigs were matched pairwise to correct for genetic, weight and sex differences, and weaning at an average age of 35 days. From then on, the pigs in the experimental room were submitted to draught in a time-unpredictable way. Days with time-unpredictable draught were followed by days without draught. Behavioural studies started on day 35 and ended on day 75 of the experiment. The total activity of the pigs was higher during draught. Explorative behaviour was 4 times higher during draught periods than during non-draught periods. Redirected explorative behaviour on penmates, including earbiting, occurred more during draught periods. Agonistic behaviour increased strongly during draught periods; headknocks with biting as an excessive form of aggression occurred only during these periods. Even in periods without draught, pigs in the experiment room had a sternum:recumbent lying ratio which was higher than that of pigs in the control room and lay in contact with penmates more than did pigs in the control room. It is concluded that unpredictable and uncontrollable draught as a climatic stressor had large effects on the behaviour of pigs; redirected explorative behaviour on penmates and excessive aggression could be detrimental for health and the performance of pigs.

Date 1991
Publication Title Applied Animal Behaviour Science
Volume 31
Issue 1-2
Pages 69-82
ISBN/ISSN 0168-1591
Language English
Author Address Department of Herd Health and Reproduction, Faculty of Veterinary Medicine, State University of Utrecht, Yalelaan 7, 3584 CL Utrecht, Netherlands.
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Tags
  1. Aggression
  2. Air
  3. Animal behavior
  4. Animal diseases
  5. Animal housing
  6. Animal husbandry
  7. Animal rights
  8. Animal welfare
  9. Climate
  10. Environment
  11. Farms
  12. Housing
  13. Mammals
  14. Meat animals
  15. Meteorology
  16. peer-reviewed
  17. Stress
  18. Swine
  19. temperatures
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  1. peer-reviewed