Diet management to effectively abate N2O emissions from surface applied pig slurry

Sánchez Martín, Laura and Beccaccia, Amanda and Blas Beorlegui, Juan Carlos de and Sanz Cobeña, Alberto and García Rebollar, Paloma and Estellés, Fernando and Marsden, A. and Chadwick, Dave and Vallejo Garcia, Antonio (2017). Diet management to effectively abate N2O emissions from surface applied pig slurry. "Agriculture Ecosystems & Environment", v. 239 ; pp. 1-11. ISSN 0167-8809. https://doi.org/10.1016/j.agee.2016.12.007.

Description

Title: Diet management to effectively abate N2O emissions from surface applied pig slurry
Author/s:
  • Sánchez Martín, Laura
  • Beccaccia, Amanda
  • Blas Beorlegui, Juan Carlos de
  • Sanz Cobeña, Alberto
  • García Rebollar, Paloma
  • Estellés, Fernando
  • Marsden, A.
  • Chadwick, Dave
  • Vallejo Garcia, Antonio
Item Type: Article
Título de Revista/Publicación: Agriculture Ecosystems & Environment
Date: 15 February 2017
ISSN: 0167-8809
Volume: 239
Subjects:
Freetext Keywords: Nitrous oxide emissions; Carbon dioxide emissions; Diet manipulation; Diet fibre content
Faculty: E.T.S. de Ingeniería Agronómica, Alimentaria y de Biosistemas (UPM)
Department: Producción Agraria
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Application of manure (urine and/or feces) to agricultural soils enhances emissions of gases such as nitrous oxide (N2O) and carbón dioxide (CO2). Some minor N compounds such as hippuric acid and benzoic acid present in urine can be controlled through diet manipulation to mitigate these emissions. The aim of this study was to evaluate how the inclusion of fibrous by-products in the diet of pigs affects hippuric and benzoic acid concentrations in the excreted urine/slurry, and their possible effect on N2O emissions following application of these manures to soil. Slurries were obtained from growing-finishing pigs fed five contrasting diets: a conventional diet (pig slurry control, PSC); and orange pulp and carob meal at a dietary fiber level of 75 or 150 g kg?1 (OP-75; OP-150; CM-75; CM-150) and were then applied to mesocosms containing young ryegrass plants. A control treatment without slurry was also included. The N2O and CO2 emissions were measured using static chambers following slurry application, alongside measurements of soil ammonium (NH4+), nitrate (NO3?), and dissolved organic carbon. Soils amended with slurries obtained from fibre by-products, OP and CM, decreased N2O emissions by 65 and 47%, respectively, compared with slurries obtained through a conventional pig diet. Benzoic acid was negatively correlated with N2O emission for slurries from OP diets, which had over double the hippuric acid content, and more than 1.8 times the benzoic acid content than the CM. However, this effect only occurred during the first week due to rapid degradation of this compound within soil. The possible toxic effect of benzoic acid did not appear to affect soil respiration, since a positive correlation was found. Results of a benzoic acid balance (considering both intake through feed and release through urine) indicated that the source of both acids were phenolic compounds (polyphenolic or lignin) present in the fibrous fraction. These results show that N2O emissions are more affected than CO2 by to compounds within urine/faeces that can be manipulated indirectly through the diet.

Funding Projects

TypeCodeAcronymLeaderTitle
Madrid Regional GovernmentS2013/ABI-2717UnspecifiedUnspecifiedUnspecified
Government of SpainAGL2011-30023UnspecifiedUnspecifiedUnspecified
Government of SpainAGL2012-37815-CO5-01UnspecifiedUnspecifiedUnspecified
Government of SpainAGL2015-64582-C3-3-RUnspecifiedUnspecifiedUnspecified

More information

Item ID: 50695
DC Identifier: http://oa.upm.es/50695/
OAI Identifier: oai:oa.upm.es:50695
DOI: 10.1016/j.agee.2016.12.007
Official URL: https://www.sciencedirect.com/science/article/pii/S0167880916305904?via%3Dihub
Deposited by: Memoria Investigacion
Deposited on: 29 May 2018 09:36
Last Modified: 01 Apr 2019 11:25
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