[Ammonia and dust in cattlesheds, piggeries and poultry houses, 2: EU-project PL 900 703]

air pollution aliment pour animaux alojamiento para aves ammonia ammoniac bovin cattle cerdo chickens conception cuadras design dust feeds ganado bovino logement des volailles piensos piggeries pocilga pollo polvo (contaminantes) porcherie porcin poulet poultry housing stables swine