Maro Ibarburu
Iowa State University
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Featured researches published by Maro Ibarburu.
Poultry Science | 2014
Nathan Pelletier; Maro Ibarburu; Hongwei Xin
The US egg industry has evolved considerably over recent decades by incorporating new technologies and production practices. To date, there has been no comprehensive assessment of the resource demand and environmental effects of these changes. This study quantifies the environmental footprint of egg production supply chains in the United States for 2010 compared with 1960 using life cycle assessment. The analysis considers changes in both foreground (e.g., hen production performance) and background (e.g., efficiencies of energy provision, fertilizer production, production of feed inputs, and transport modes) system variables. The results revealed that feed efficiency, feed composition, and manure management are the 3 primary factors that determine the environmental impacts of US egg production. Further research and improvements in these areas will aid in continual reduction of the environmental footprint of the US egg industry over time. Per kilogram of eggs produced, the environmental footprint for 2010 is 65% lower in acidifying emissions, 71% lower in eutrophying emissions, 71% lower in greenhouse gas emissions, and 31% lower in cumulative energy demand compared with 1960. Table egg production was 30% higher in 2010; however, the total environmental footprint was 54% lower in acidifying emissions, 63% lower in eutrophying emissions, 63% lower in greenhouse gas emissions, and 13% lower in cumulative energy demand compared with 1960. Reductions in the environmental footprint over the 50-yr interval considered can be attributed to the following: 27 to 30% due to improved efficiencies of background systems, which outweighed the declining energy return on energy invested for primary energy sources; 30 to 44% due to changes in feed composition; and 28 to 43% due to improved bird performance.
Journal of Cleaner Production | 2013
Nathan Pelletier; Maro Ibarburu; Hongwei Xin
2007 Conference, April 16-17, 2007, Chicago, Illinois | 2007
John D. Lawrence; Maro Ibarburu
Animal Industry Report | 2005
Maro Ibarburu; John D. Lawrence
Animal Industry Report | 2005
Maro Ibarburu; John D. Lawrence
Animal Industry Report | 2007
Maro Ibarburu; James Kliebenstein; Brent Hueth
American Journal of Agricultural Economics | 2005
Brent Hueth; Maro Ibarburu; James Kliebenstein
2005 Conference, April 18-19, 2005, St. Louis, Missouri | 2005
Maro Ibarburu; John D. Lawrence
Archive | 2012
Hongwei Xin; Morgan D. Hayes; Maro Ibarburu; Suzanne T. Millman; Rebecca L. Parsons; Byron F. Brehm-Stecher; Hyun Jung Kim; Hong Li
Animal Industry Report | 2011
Hongwei Xin; Hong Li; Robert Burns; James Kliebenstein; Maro Ibarburu; Stacey Roberts; Kristjan Bregendahl