Energy use in pig production: An examination of current Iowa Systems Harmon, Jay Lammers, Peter Helmers, Matthew Kenealy, M. Douglas Kliebenstein, James Harmon, Jay Helmers, Matthew Honeyman, Mark
dc.contributor.department Agricultural and Biosystems Engineering 2018-02-13T04:04:18.000 2020-06-29T22:37:21Z 2020-06-29T22:37:21Z Sun Jan 01 00:00:00 UTC 2012 2012-12-12 2012-03-01
dc.description.abstract <p>This paper compares energy use for different pig production systems in Iowa, a leader in US swine production. Pig production systems include not only the growth and performance of the pigs, but also the supporting infrastructure of pig production. This supporting infrastructure includes swine housing, facility management, feedstuff provision, swine diets, and manure management. Six different facility type × diet formulation × cropping sequence scenarios were modeled and compared. The baseline system examined produces 15,600 pigs annually using confinement facilities and a corn-soybean cropping sequence. Diet formulations for the baseline system were corn-soybean meal diets that included the synthetic AA L-lysine and exogenous phytase. The baseline system represents the majority of current US pork production in the Upper Midwest, where most US swine are produced. This system was found to require 744.6 MJ per 136-kg market pig. An alternative system that uses bedded hoop barns for grow-finish pigs and gestating sows would require 3% less (720.8 MJ) energy per 136-kg market pig. When swine production systems were assessed, diet type and feed ingredient processing were the major influences on energy use, accounting for 61 and 79% of total energy in conventional and hoop barn-based systems, respectively. Improving feed efficiency and better matching the diet formulation with the thermal environment and genetic potential are thus key aspects of reducing energy use by pig production, particularly in a hoop barn-based system. The most energy-intensive aspect of provisioning pig feed is the production of synthetic N for crop production; thus, effectively recycling manure nutrients to cropland is another important avenue for future research. Almost 25% of energy use by a conventional farrow-to-finish pig production system is attributable to operation of the swine buildings. Developing strategies to minimize energy use for heating and ventilation of swine buildings while maintaining pig comfort and performance is a third critical area for future research. The hoop barn-based alternative uses 64% less energy to operate buildings but requires bedding and 2.4% more feed. Current Iowa pig production systems use energy differently but result in similar total energy use. Compared with 1975, current farrow-to-finish systems in Iowa require 80% less energy to produce live market pigs.</p>
dc.description.comments <p>This article is from <em><a href="" target="_blank">Journal of Animal Science</a> </em>90, no. 3 (March 2012): 1056–1068. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/
dc.identifier.articleid 1126
dc.identifier.contextkey 3531609
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/130
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 19:41:36 UTC 2022
dc.subject.disciplines Agricultural and Resource Economics
dc.subject.disciplines Agricultural Economics
dc.subject.disciplines Agriculture
dc.subject.disciplines Animal Sciences
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Economics
dc.subject.keywords Animal Science
dc.subject.keywords Economics
dc.subject.keywords energy use
dc.subject.keywords hoop barn
dc.subject.keywords pig production
dc.title Energy use in pig production: An examination of current Iowa Systems
dc.type article
dc.type.genre article
dspace.entity.type Publication
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relation.isAuthorOfPublication 26a812e6-e6de-44ff-b7ea-d2459ae1903c
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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