000048854 001__ 48854
000048854 005__ 20180122210738.0
000048854 037__ $$a1040-2016-85002
000048854 041__ $$aen
000048854 245__ $$aLand-Use Credits to Corn Ethanol: Accounting for Distillers Dried Grains with Solubles as a Feed Substitute in Swine Rations
000048854 260__ $$c2009-04
000048854 269__ $$a2009-04
000048854 270__ $$mjfabiosa@iastate.edu$$pFabiosa,   Jacinto F.
000048854 300__ $$a23
000048854 336__ $$aWorking or Discussion Paper
000048854 490__ $$aCARD Working Paper
000048854 490__ $$a09-WP 489
000048854 520__ $$aMany studies on the impact of biofuels on greenhouse gas emissions do not consider indirect land-use change and land use avoided because of co-products utilization. This paper provides estimates of the land-use credit for corn ethanol when its by-product—distillers dried grains with solubles (DDGS)—is used in swine feed rations to substitute for corn and soymeal. The range of estimates used here covers the land-use credit used in the literature. Moreover, this study departs from earlier studies because feed rations from a least-cost optimization are used rather than rations from feeding trials, and DDGS nutrient profile variability is fully accounted for. As a result, displacement rates and the land-use credit can be better characterized using a distribution rather than a single point estimate. The land-use credit for corn ethanol for DDGS used in swine feed rations ranges from -0.367 to -0.596 hectares, whereby substitution for corn in the feed ration accounts for 56.09% and soymeal substitution contributes 48.46%. Variability of the land-use credit is contributed more by the variability of land use from the substitution of soymeal than that of corn. 

Finally, when feed compounders discount the DDGS nutrient profile to ensure they are at or above any realized nutrient profile 90% of the time, the land-use credit for corn ethanol declines by 8.47% for DDGS in a swine feed ration.
000048854 542__ $$fLicense granted by Jacquelyn Garreau (jgarreau@iastate.edu) on 2009-04-06T19:46:37Z (GMT):

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000048854 650__ $$aAgricultural and Food Policy
000048854 6531_ $$abiofuel
000048854 6531_ $$aDDGS quality
000048854 6531_ $$adisplacement rate
000048854 6531_ $$agreenhouse gas accounting
000048854 6531_ $$aland-use credit
000048854 6531_ $$aoptimal
000048854 6531_ $$astochastic LP
000048854 6531_ $$aswine grower-finisher optimal feed ration.
000048854 700__ $$aFabiosa, Jacinto F.
000048854 8564_ $$s200289$$uhttp://ageconsearch.umn.edu/record/48854/files/09-WP_489.Fabiosa.pdf
000048854 887__ $$ahttp://purl.umn.edu/48854
000048854 909CO $$ooai:ageconsearch.umn.edu:48854$$pGLOBAL_SET
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  Previous issue date: 2009-04
000048854 982__ $$gIowa State University>Center for Agricultural and Rural Development>CARD Working Paper Series
000048854 980__ $$a1040