Anti-methanogenic potential of seaweeds and seaweed-derived compounds in ruminant feed: current perspectives, risks and future prospects.

IF 6.3 Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Ailbhe McGurrin, Julie Maguire, Brijesh K Tiwari, Marco Garcia-Vaquero
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Abstract

With methane emissions from ruminant agriculture contributing 17% of total methane emissions worldwide, there is increasing urgency to develop strategies to reduce greenhouse gas emissions in this sector. One of the proposed strategies is ruminant feed intervention studies focused on the inclusion of anti-methanogenic compounds which are those capable of interacting with the rumen microbiome, reducing the capacity of ruminal microorganisms to produce methane. Recently, seaweeds have been investigated for their ability to reduce methane in ruminants in vitro and in vivo, with the greatest methane abatement reported when using the red seaweed Asparagopsis taxiformis (attributed to the bromoform content of this species). From the literature analysis in this study, levels of up to 99% reduction in ruminant methane emissions have been reported from inclusion of this seaweed in animal feed, although further in vivo and microbiome studies are required to confirm these results as other reports showed no effect on methane emission resulting from the inclusion of seaweed to basal feed. This review explores the current state of research aiming to integrate seaweeds as anti-methanogenic feed additives, as well as examining the specific bioactive compounds within seaweeds that are likely to be related to these effects. The effects of the inclusion of seaweeds on the ruminal microbiome are also reviewed, as well as the future challenges when considering the large-scale inclusion of seaweeds into ruminant diets as anti-methanogenic agents.

反刍动物饲料中海藻及其衍生化合物的抗甲烷潜能:现状、风险和未来展望
反刍动物农业的甲烷排放量占全球甲烷排放总量的17%,因此制定减少该部门温室气体排放的战略越来越紧迫。提出的策略之一是反刍动物饲料干预研究,重点是加入抗产甲烷化合物,这些化合物能够与瘤胃微生物群相互作用,降低瘤胃微生物产生甲烷的能力。最近,人们对海藻在体外和体内减少反刍动物体内甲烷的能力进行了研究,据报道,使用红海藻天冬酰胺(归因于该物种的溴仿含量)减少甲烷的效果最大。从本研究的文献分析来看,有报道称在动物饲料中加入这种海藻可使反刍动物的甲烷排放量减少高达99%,尽管还需要进一步的体内和微生物组研究来证实这些结果,因为其他报告显示,在基础饲料中加入海藻对甲烷排放没有影响。本文综述了海藻作为抗产甲烷饲料添加剂的研究现状,并研究了海藻中可能与这些作用相关的特定生物活性化合物。本文还综述了海藻对瘤胃微生物组的影响,以及考虑将海藻大规模添加到反刍动物日粮中作为抗产甲烷剂时面临的挑战。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
10.30
自引率
0.00%
发文量
822
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