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Ammonia and Methane Emission Factors from Cattle Operations Expressed as Losses of Dietary Nutrients or Energy

Author

Listed:
  • Zifei Liu

    (Department of Biological and Agricultural Engineering, Kansas State University, Manhattan, KS 66056, USA)

  • Yang Liu

    (Department of Biological and Agricultural Engineering, Kansas State University, Manhattan, KS 66056, USA)

  • James P. Murphy

    (Department of Biological and Agricultural Engineering, Kansas State University, Manhattan, KS 66056, USA)

  • Ronaldo Maghirang

    (Department of Biological and Agricultural Engineering, Kansas State University, Manhattan, KS 66056, USA)

Abstract

The objective of this study was to conduct a systematic review of published literature on ammonia (NH 3 ) and enteric methane (CH 4 ) emissions from beef and dairy cattle operations to obtain statistically representative emission factors based on dietary intakes of nutrients or energy, and to identify major causes of emission variations. NH 3 emissions from lagoon or other manure storage facilities were not included in this review. The NH 3 and CH 4 emission rates, expressed as a percentage losses of dietary nutrients or energy, demonstrated much less variation compared with emission rates expressed in g/animal/day. Air temperature and dietary crude protein (CP) content were identified as two major factors that can affect NH 3 emission rates in addition to farm type. Feed digestibility and energy intake were identified as two major factors that can affect CH 4 emission rates expressed as a percentage losses of dietary energy. Generally, increasing productivity and feed efficiency represented the greatest opportunity for mitigating NH 3 or CH 4 emissions per unit of livestock product. Expressing CH 4 loss on a digestible energy basis rather than a gross energy intake basis can better represent the large variation among diets and the effects of varying dietary emission mitigation strategies.

Suggested Citation

  • Zifei Liu & Yang Liu & James P. Murphy & Ronaldo Maghirang, 2017. "Ammonia and Methane Emission Factors from Cattle Operations Expressed as Losses of Dietary Nutrients or Energy," Agriculture, MDPI, vol. 7(3), pages 1-12, February.
    • Handle: RePEc:gam:jagris:v:7:y:2017:i:3:p:16-:d:91205
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    Citations

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    Cited by:

    1. Anna Murawska & Piotr Prus, 2021. "The Progress of Sustainable Management of Ammonia Emissions from Agriculture in European Union States Including Poland—Variation, Trends, and Economic Conditions," Sustainability, MDPI, vol. 13(3), pages 1-20, January.
    2. Hernando Barreto Riaño & John Willmer Escobar & Rodrigo Linfati & Virna Ortiz-Araya, 2022. "Disciplinary Categorization of the Cattle Supply Chain—A Review and Bibliometric Analysis," Sustainability, MDPI, vol. 14(21), pages 1-44, November.

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