Seaweed as a feed additive to mitigate enteric methane emissions in ruminants: Opportunities and challenges

作者：Yunlong Liu, Mi Zhou, Qiyu Diao, Tao Ma, Yan Tu · 发表于：Journal of Integrative Agriculture · 年份：2024 · DOI：10.1016/j.jia.2024.09.036 · 被引用次数：18 · 研究领域：Fatty Acid Research and Health、Protein Hydrolysis and Bioactive Peptides、Seaweed-derived Bioactive Compounds

• Asparagopsis taxiformis has demonstrated significant potential in reducing enteric methane emissions in ruminants, achieving reductions of up to 99% in vitro and in vivo , primarily due to its bromoform content. • The application of seaweed as a feed additive faces challenges, including potential heavy metal contamination, environmental risks associated with bromoform, and the need for a sustainable cultivation and processing supply chain. • Further research is needed to identify low-bromoform seaweed species and investigate additional bioactive compounds to optimize methane mitigation strategies. Cutting farming-related methane emissions from ruminants is critical in the battle against climate change. Since scientists initially investigated the potential of marine macroalgae to reduce methane emissions, using seaweeds as an anti-methanogenic feed additive has become prevailing in recent years. Asparagopsis taxiformis is the preferred species because it contains a relatively higher concentration of bromoform. As a type of halogenated methane analogue, bromoform contained in A . taxiformis can specifically inhibit the activity of coenzyme M methyltransferase, thereby blocking the ruminal methanogenesis. However, bromoform is a potential toxin and ozone-depleting substance. In response, current research focuses on the effects of bromoform-enriched seaweed supplementation on ruminant productivity and safety, as well as the impact of large-scale cultivation of seaweeds on the a...