Swine welfare and human health, in modern intensive swine breeding, depends mostly on indoor air quality. The interaction among internal and external temperature, relative humidity, ammonia production, type of floor, air speed and ventilation system, growth performance of pigs were studied in a trial conducted from the 17th July to 13th November 2002 in a swine finishing building in Northern Italy. In all rooms, ammonia concentrations were generally higher than the 7 ppm value suggested by Donham et al. (1989), except for the totally slatted floor room, but lower than the 25 ppm value indicated by ACGIH (1993) and similar to those published by Donham et al. (1989) and Kourkamp et al. (1998) for the Northern Europe. Ammonia concentration, inversely related to temperature, and internal relative humidity were significantly lower in the totally slatted floor room. Relative humidity seems positively related to ammonia levels. Air speed didn’t affect the pollutant level in the environment. The floor ventilation system, when compared to the ceiling system, seems to affect positively indoor air quality. It can be concluded that floor ventilation system and the totally slatted floor (even for the less amount of manure retained on the floor) can take part in improving indoor air quality and growth performance in a swine housing.
|Titolo:||Microclimatic and environmental parameters in relationship with air quality in a swine housing|
|Autori interni:||GUARINO, MARCELLA|
|Settore Scientifico Disciplinare:||Settore AGR/10 - Costruzioni Rurali e Territorio Agroforestale|
|Data di pubblicazione:||2004|
|Appare nelle tipologie:||01 - Articolo su periodico|