JOURNAL ARTICLE

Feeding Pigs with Low Crude Protein Diets: Impact of Pig Manure Nitrogen Content on Biogas Production and Digestate Quality.

  • Published In: Journal of Animal Science, 2023, v. 101. P. 47 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Hickmann, Felipe M. W.; Andretta, Ines; Cappelaere, Léa; Goyette, Bernard; Létourneau-Montminy, Marie-Pierre; Rajagopal, Rajinikanth 3 of 3

Abstract

This article examines the impact of pig manure nitrogen (N) content on biogas production and digestate quality during anaerobic digestion (AD) of manure from pigs fed low crude protein diets. The study tested three manure total Kjeldahl nitrogen (TKN) concentrations and found that reducing manure N content tended to decrease biogas and methane production as well as the methane-to-carbon dioxide ratio, which affects biogas efficiency. Strong positive correlations were observed between manure N content and ammoniacal nitrogen and TKN levels in the digestate. While lowering dietary crude protein may reduce environmental nitrogen emissions, it could also limit the nitrogen availability in digestate used as fertilizer for fast-growing crops.

Additional Information

  • Source:Journal of Animal Science. 2023/11, Vol. 101, p47
  • Document Type:Abstract
  • Subject Area:Chemistry
  • Publication Date:2023
  • ISSN:0021-8812
  • DOI:10.1093/jas/skad341.052
  • Accession Number:173648709
  • Copyright Statement:Copyright of Journal of Animal Science is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Looking to go deeper into this topic? Look for more articles on EBSCOhost.