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Abstract

Analogous to the way in which repeated episodes of stress can lead to a negative emotional state, it is possible that repeated positive emotions could lead to a positive emotional state. Positive emotions can be induced by providing enrichment or by successfully coping with cognitive challenges....

Author(s)
Imfeld-Mueller, S.; Hillmann, E.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Applied Animal Behaviour Science, 2012, 137, 1/2, pp 23-29
Abstract

Entire male pigs display more aggressive and sexual behaviour. This might cause a condition of chronic stress and impair their welfare. In order to assess chronic stress in entire and castrated male pigs, as well as effects of providing grass silage as occupational and feed material on behaviour...

Author(s)
Holinger, M.; Früh, B.; Stoll, P.; Graage, R.; Wirth, S.; Bruckmaier, R.; Prunier, A.; Kreuzer, M.; Hillmann, E.
Publisher
Elsevier, New York, USA
Citation
Physiology & Behavior, 2018, 195, pp 58-68