Literaturrecherche

Literatur Mair J, Marx G, Petersen J, Mennicken L (2001) Vocalisation in chicken flocks under different light-off variation. In: Oester H, Wyss C (eds) Proceedings of the 6th European Symposium on Poultry Welfare 2001. Zollikofen: Swiss Branch of the WPSA, pp 88-91

Literatur Berk J (2001) The enrichment of environment : a possible way to improve the health and welfare of tom turkeys. In: Oester H, Wyss C (eds) Proceedings of the 6th European Symposium on Poultry Welfare 2001. Zollikofen: Swiss Branch of the WPSA, pp 278-280