References
- APPLEBY, M. and HUGHES, B.O. (1990) Effect of perches and nests in cages. World's Poultry Science Journal, in press
- BROOM, D.M. (1990) Effects of handling and transport on laying hens. World's Poultry Science Journal 46: 48–50.
- COUNCIL DIRECTIVE 86/113/EEC (1986) Welfare of Battery Hens. Official Journal of European Communities (L95) 29: 45–49.
- ELSON, H.A. (1976) New ideas on laying cage design – the ‘get-away’ cage. Proc. WPSA Vth European Poultry Conf. pp. 1030–1041.
- NICOL, C. (1990) Behaviour requirements within a cage environment. World's Poultry Science Journal 46: 31–33.
- TAUSON, R. (1984) Effects of a perch in conventional perches for laying hens. Acta Agricultura Scandinavica 34: 193–209.
- TAUSON, R. (1985) Mortality in laying hens caused by differences in cage design. Acta Agricultura Scandinavica 35: 165–174.
- WEGNER, R.M. (1990) Experience with the get-away cage system. World's Poultry Science Journal 46: 41–47.