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Pig Journal Volume: 57
Publication date: May 2006

Refereed Section

STRESS BIOLOGY IN THE PIG
S. Llamas Moya, L.A. Boyle, P.B. Lynch and S. Arkins

Abstract
In modern pig production, animals are constantly challenged by external or internal stimuli that may vary in their nature, duration and frequency.  The perception of these as threats to homeostasis will lead to the initiation of the stress response in the central nervous system.  The central nervous system regulates the biological defences against stress, which comprise behavioural, autonomic, endocrine and immune responses.  These biological responses are inter-related, and hence are highly dependent on one another.  Modifications of these responses can be associated with alterations in the well-being of pigs.  The correct operation and adaptability of the coping mechanisms available to the animals will result in a successful outcome of the stress response.

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