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Abstract

Fighting among new groupings of pigs at 15-16 weeks of age was accompanied by increased heart rate, increased plasma catecholamines, and a delayed increase in plasma cortisol. Pigs of high social rank were more aggressive and their catecholamine response was greater than pigs of low social rank....

Author(s)
Otten, W.; Stabenow, B.; Puppe, B.; Kanitz, E.; Schön, P. C.; Nürnberg, G.
Publisher
Kuratorium für Technik und Bauwesen in der Landwirtschaft., Darmstadt, Germany
Citation
Aktuelle Arbeiten zur artgemässen Tierhaltung 1995., 1996, pp 27-36
Abstract

The performance of 89 gilts and barrows, housed in mixed-sex or single-sex groups from 98 days of age to slaughter, was investigated. Social rank was significantly correlated with growth (0.45), with dominant gilts and barrows weighing 1.5 and 2.5 kg resp. more than gilts and barrows of low rank at ...

Author(s)
Puppe, B.; Hoy, S.; Schremmer, H.
Citation
Tierzucht, 1991, 45, 3, pp 100-102