Mitigation of ammonia emissions from pig production using reduced dietary crude protein with amino acid supplementation

Shule Liu, Ji Qin Ni, John S. Radcliffe, Caitlin E. Vonderohe

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

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 languageEnglish
Pages (from-to)200-208
Number of pages9
JournalBioresource Technology
Volume233
DOIs
StatePublished - 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.

FundersFunder number
Graduate Support of Purdue Research Foundation
U.S. Department of Agriculture
Purdue Climate Change Research Center, Purdue University
Arkansas Water Resources Center, University of ArkansasUA 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

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