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DOI QR Code

Strategies to Mitigate Enteric Methane Emissions from Ruminant Animals

  • Tseten, Tenzin (Division of Applied Life Science (BK21 Four), ABC-RLRC, PMBBRC, Gyeongsang National University) ;
  • Sanjorjo, Rey Anthony (Division of Applied Life Science (BK21 Four), ABC-RLRC, PMBBRC, Gyeongsang National University) ;
  • Kwon, Moonhyuk (Division of Applied Life Science (BK21 Four), ABC-RLRC, PMBBRC, Gyeongsang National University) ;
  • Kim, Seon-Won (Division of Applied Life Science (BK21 Four), ABC-RLRC, PMBBRC, Gyeongsang National University)
  • 투고 : 2022.02.15
  • 심사 : 2022.03.03
  • 발행 : 2022.03.28

초록

Human activities account for approximately two-thirds of global methane emissions, wherein the livestock sector is the single massive methane emitter. Methane is a potent greenhouse gas of over 21 times the warming effect of carbon dioxide. In the rumen, methanogens produce methane as a by-product of anaerobic fermentation. Methane released from ruminants is considered as a loss of feed energy that could otherwise be used for productivity. Economic progress and growing population will inflate meat and milk product demands, causing elevated methane emissions from this sector. In this review, diverse approaches from feed manipulation to the supplementation of organic and inorganic feed additives and direct-fed microbial in mitigating enteric methane emissions from ruminant livestock are summarized. These approaches directly or indirectly alter the rumen microbial structure thereby reducing rumen methanogenesis. Though many inorganic feed additives have remarkably reduced methane emissions from ruminants, their usage as feed additives remains unappealing because of health and safety concerns. Hence, feed additives sourced from biological materials such as direct-fed microbials have emerged as a promising technique in mitigating enteric methane emissions.

키워드

과제정보

This work was supported by the Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ01566401), Rural Development Administration, Republic of Korea, and the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2021R1A5A8029490).

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