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Effets de la quantité de paille sur les émissions d'ammoniac et de gaz à effet de serre lors de l'élevage de porcs charcutiers sur litière accumulée
| Content Provider | Semantic Scholar |
|---|---|
| Author | Dawans, Edwin |
| Copyright Year | 2014 |
| Abstract | This trial aims to study the effect of the amount of straw on emissions of ammonia (NH3), nitrous oxide (N2O), methane (CH4) and carbon dioxide (CO2) associated with fattening pigs kept on deep litter. Three successive batches of 30 fattening pigs (Piétrain x Belgian Landrace) were divided into three similar groups that were housed separately in three identical experimental rooms fitted with a bedded floor pen of 12.6 m2 of available area (1.26 m2 per pig). In each room, the initial deep litter was made of 250 kg of whole wheat straw constituting a layer of about 30 cm depth. Thereafter, fresh straw was supplied once a week up to a total amount of 500, 750 or 1000 kg at the end of the fattening periods (91 days). Manures were removed after each fattening period. Ventilation was controlled to maintain a constant ambient temperature. The gas emissions were measured by infrared photoacoustic detection (3 measurement episodes of 6 consecutive days for each fattening period, with 3 weeks of interval between measurement episodes). Increasing the amount of straw from 50 to 100 kg per pigs significantly reduced the emissions of NH3 (16.04 vs. 19.04 g NH3 pig -1 day, P<0.01) and N2O (0.74 vs. 1.11 g N2O pig -1 day, P<0.001) but increased the emissions of CH4 (9.09 vs. 4.83 g CH4 pig day, P<0.001). CO2-emissions were less impacted by the amount of straw with about 2.45 kg CO2 pig -1 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.journees-recherche-porcine.com/texte/2014/environnement/8EP5.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
