Ammonia Emissions from Pigs on Deep Litter Beds and in a Strip Grazing System

Autor:	L. Svensson, G. M. Gustafson
Rok vydání:	2003
Předmět:	geography geography.geographical_feature_category Renewable Energy Sustainability and the Environment Deep litter Live weight Development Pasture Manure Ammonia chemistry.chemical_compound chemistry Agronomy Grazing Environmental science Agronomy and Crop Science
Zdroj:	Journal of Sustainable Agriculture. 23:41-51
ISSN:	1540-7578 1044-0046
DOI:	10.1300/j064v23n02_05
Popis:	Ammonia emissions were measured with a micrometeorological difference method in a three-year study of systems with sows and fattening pigs raised indoors or in a strip grazing system. The average emission values were 0.37 ± 0.25 and 0.51 ± 0.23 g 100 kg−1 live weight of the pigs in the indoor and on pasture system, respectively. It is concluded that the extent of ammonia emissions is as much related to local conditions in time and environment as to the general design of the production systems. However, the additional emissions from spreading the manure from the indoor system should be taken into account for a relevant comparison. The strip grazing regime seems to be effective for avoiding point loads of ammonia emissions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f426283b2a46720590357d7b968f94b5 https://doi.org/10.1300/j064v23n02_05 Zobrazit plný text záznamu