1. Influence of immunosation against GnRF on agonistic and mounting behaviour, serum testosterone concentration and body weigt in male pigs compared with boars and barrows;Albrecht;Appl. Anim. Behav. Sci.,2012
2. Anonymous, 2007. Richtlinie für die Stationsprüfung auf Mastleistung, Schlachtkörperwert und Fleischbeschaffenheit beim Schwein. www.zds-bonn.de/services/files/dokumente/rlnkp07.pdf (access on 01.07.15).
3. Diurnal and ultradian rhythms of behaviour in a mare group of Przewalski horse (Equus ferus przewalskii), measured through one year under semi-reserve conditions;Berger;Appl. Anim. Behav. Sci.,1999
4. Effects of fattening boars in mixed or single sex groups and split marketing on pig welfare;Boyle;Anim. Welf.,2007
5. Behavioural differences between entire boars, castrated males, and gilts kept in single or mixed sex groups under different housing and feeding conditions during fattening;Bünger;Züchtungskunde,2014