0308-521X/$ see front matter 2010 Elsevier Ltd. A doi:10.1016/j.agsy.2010.06.003 * Corresponding author. Tel.: +1 515 294 4637; fax E-mail address: [email protected] (P.J. Lam This study evaluates energy and carbon use by two types of facilities—conventional confinement and hoop barn-based—within farrow-to-finish pig production systems scaled to produce 5200 and 15,600 market pigs annually i...