6 6 LOHMANN TIERZUCHT › MANAGEMENT GUIDE › HOUSING SYSTEMS Barn systems allow the the birds free movement throughout the house. The systems themselves can vary considerably in design and layout depending on the type of building. They can range from a basic single level floor system, to a classic setup which consists of a dropping pit cov- ered with either wooden, wire mesh or plastic slats. This raised area generally takes up two thirds of the floor space. (Please take note of your own regulatory re- quirements). A litter/scratching area then makes up the additional area which gives the hens room to move and exhibit natural behaviour. In systems where this is not feasible many people adopt a winter garden system which offers a similar solu- tion. The laying nests, feeders and drinkers are positioned on the slatted area and should provide adequate ac- cessibility to all hens within the sys- tem. Rails or other elevated perching facilities should be provided as rest- ing places for the hens. The avail- ability and design of the perching is often also governed by legislation. Aviary systems can vary greatly in design however all consist of raised tiers which offer a greater usable sur- face area than a conventional floor system. Hens have access throughout the sys- tem and are encouraged to explore by the careful positioning of the feeders and drinkers. Strategically placed perches and ramps encourage and allow movement between tiers. Lighting systems are designed to mimic sunrise and sunset and pro- mote movement throughout the tiers and should follow a sequential pat- tern of roof to ground in the morn- ing and the reverse in the evening. Due to the nature of the environment close attention should be made to the management recommendations for the system you choose. Barn systems Aviary systems Housing systems