Division 4.13.2 Techniques for reducing ammonia emissions from broiler houses
United Kingdom
| Technique | Description |
|---|---|
| Natural or forced ventilation with a non-leaking drinking system (in case of solid floor with deep litter). | The building is closed and well-insulated, equipped with natural or forced ventilation, and can be combined with a veranda and/or a free-range system. The solid floor is fully covered with litter which can be added to upon necessity. Floor insulation (e.g. concrete, clay, membrane) prevents water condensation in the litter. Solid manure is removed at the end of the rearing cycle. The design and operation of the drinking water system prevents leakage and spillage of water on the litter. |
| Forced drying system of litter using indoor air (in case of solid floor with deep litter). | Indoor air recirculation systems can be used to dry the litter, while meeting the physiological needs of the birds. To this end, fans, heat exchangers and/or heaters can be used. |
| Litter on manure belt and forced air drying (in case of tiered floor systems). | A multi-floor system on tiers equipped with manure belts covered with litter. Corridors for ventilation are left between the rows of tiers. Air enters through one corridor and is directed to the litter material on the manure belt. Litter is removed at the end of the rearing cycle. The system can be used in combination with a separate initial stage where broiler chicks are hatched and grown for a limited time on manure belts with litter on a multi-tiered system. |
| Heated and cooled littered floor (in case of combideck systems). | See Section 4.2. |