Abstract
To mitigate ammonia (NH3) emissions from pig production and understand dynamic emission profiles, reduced dietary crude protein (CP) with amino acid supplementation was studied with 720 pigs in a 12-room research building for 155 days that covered from weaned to finishing stages. The pigs were divided into three 4-room groups and fed with 2.1–3.8% reduced CP (T1), 4.4–7.8% reduced CP (T2), and standard (control) diets, respectively. Compared with the control group, T1 and T2 decreased manure volumes and manure NH4 +-N concentrations. Group-mean NH3 emission from the control group was 68.9 g d−1 AU−1 (AU = 500 kg live mass). Emissions from T1 (46.7 g d−1 AU−1) and T2 (29.8 g d−1 AU−1) were reduced by 33.0% and 57.2% (p < 0.05), respectively. Dynamic peak NH3 emissions appeared during the third nursery phase for T1 and T2, but delayed to the first grower phase for the control group.
Original language | English |
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Pages (from-to) | 200-208 |
Number of pages | 9 |
Journal | Bioresource Technology |
Volume | 233 |
DOIs | |
State | Published - 2017 |
Bibliographical note
Publisher Copyright:© 2017 Elsevier Ltd
Funding
The research was funded by the USDA/University of Arkansas project (UA AES 91088-02). This work was also supported by the Agriculture Research Program of College of Agriculture, the Graduate Support of Purdue Research Foundation, and the Bilsland Dissertation Fellowship of Purdue University. The authors thank the assistance of the swine building managers Brian Ford and Katelin Ade during this study.
Funders | Funder number |
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Graduate Support of Purdue Research Foundation | |
U.S. Department of Agriculture | |
Purdue Climate Change Research Center, Purdue University | |
Arkansas Water Resources Center, University of Arkansas | UA AES 91088-02 |
Arkansas Water Resources Center, University of Arkansas |
Keywords
- Air pollution abatement
- Air quality
- Animal feeding operation
- Dietary manipulation
- Pollution control
- Swine production
ASJC Scopus subject areas
- Bioengineering
- Environmental Engineering
- Renewable Energy, Sustainability and the Environment
- Waste Management and Disposal