9GMQB6HB

2766

5 janvier 2021 18:09

5 janvier 2021 18:09

Consumers’ motivations for buying organic products include a wish of acquiring healthy, environmentally friendly products from production systems that also ensure a high level of animal welfare. However, the current Danish organic pig production faces important challenges regarding environmental impact of the system. High ammonia emissions arise from outdoor concrete areas with growing pigs and sows on pasture possess an increased risk of nitrogen (N) leaching. Direct foraging in the range area is suggested as a way to improve the nutrient efficiency at farm level and to support a more natural behavior of the pig. Thus, by modeling, we investigated the environmental consequences of two alternative scenarios with growing pigs foraging in the range area and different levels of crops available for foraging—grass–clover or a combination of Jerusalem artichokes and lucerne. It was possible to have growing pigs on free-range without increasing N leaching compared to the current practice. The alternative system with Jerusalem artichokes and lucerne (high integration of forage) showed the lowest carbon foot print with 3.12 CO2 eq kg−1 live weight pig compared to the current Danish pasture based system with 3.69 kg CO2 eq kg−1 live weight pig. Due to positive impact on soil carbon sequestration, the second alternative system based on grass-clover (low integration of forage) showed a similar carbon foot print compared to current practice with 3.68 kg CO2 eq kg−1 live weight pig. It is concluded that in practice there is room for development of organic farming systems where direct foraging plays a central role.

None

• AB - Transversal
• FREDO alimentation animale
• FREDO environnement
• FREDO mode élevage, bien-être et qualité
• GEO Danemark
• porc
• élevage

• indirect land use change
• carbon footprint
• foraging
• greenhouse gas emission
• nitrogen balance
• organic
• pig production
• soil carbon emission

Foods

4

622-644

2015/12

24 décembre 2015

10.3390/foods4040622 Le DOI est une URL unique de référencement d'une publication. Il est donc plus fiable et permanent qu'une URL classique