The calculated effect of grazing on ammonia emission based on nine organic dairy farms was 3.3 grams per hour per cow grazing on annual basis. Those results were comparable to the results from a previous survey for a common model farm. Mainly due to the supply and discharge of manure, the variation in outcomes of the organic farms was bigger, since manure application affects ammonia emission significantly. Grazing only can serve as a mitigation measure if assurance is guaranteed, but here is no single solution to provide.
|Name||Rapport / Wageningen UR Livestock Research|
|Publisher||Wageningen UR Livestock Research|
- organic farming
- dairy farming
- ammonia emission
- cow housing