Literaturrecherche

Literatur Berk J (1999) Influence of stocking density and environmental enrichment on behaviour and productivity by male, domestic turkeys. In: International Society for Applied Ethology (ed) Proceedings 33th International Congress of the International Society for Applied Ethology in Lillehammer (Norway) 1999.08.17-21. ISAE, p 197

Literatur Marx G (1999) An approach to objective comparison of calls in poultry chicks. In: International Society for Applied Ethology (ed) Proceedings 33th International Congress of the International Society for Applied Ethology in Lillehammer (Norway) 1999.08.17-21. ISAE, p 182

Literatur Horn T von, Marx G, Borell E von, Thielebein J (1999) Vocalisation analysis and physiological correlates during the castration of pigs. In: International Society for Applied Ethology (ed) Proceedings 33th International Congress of the International Society for Applied Ethology in Lillehammer (Norway) 1999.08.17-21. ISAE