Cashew nut shell liquid potentially mitigates methane emission from the feces of Thai native ruminant livestock by modifying fecal microbiota

Narabe, Chiaki; Kamiyama, Saki; Saito, Michiyuki; Boonsaen, Phoompong; Khongpradit, Anchalee; Sawanon, Suriya; Suzuki, Yutaka; Koike, Satoshi; Kobayashi, Yasuo

doi:10.1111/asj.13614

Cited by 3 publications

(1 citation statement)

References 40 publications

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“…A variety of studies have reported that the cashew nut shell liquid (CNSL), a phenolic subproduct of cashew nut production, has the potential to reduce ruminal methane emissions through the modification of the microbiome [ 156 , 157 , 158 , 159 , 160 ]. In a small cohort of Holstein cows, animals were subjected to a diet containing concentrate and hay (60:40) for four weeks (control time point) and then to the same diet supplemented with pellets containing 4 g/100 kg of body weight per day of CNLS (CNLS time point).…”

Section: Prevotella and Its Association With Reduced Methane...mentioning

confidence: 99%

Prevotella: A Key Player in Ruminal Metabolism

2022

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Ruminants are foregut fermenters that have the remarkable ability of converting plant polymers that are indigestible to humans into assimilable comestibles like meat and milk, which are cornerstones of human nutrition. Ruminants establish a symbiotic relationship with their microbiome, and the latter is the workhorse of carbohydrate fermentation. On the other hand, during carbohydrate fermentation, synthesis of propionate sequesters H, thus reducing its availability for the ultimate production of methane (CH4) by methanogenic archaea. Biochemically, methane is the simplest alkane and represents a downturn in energetic efficiency in ruminants; environmentally, it constitutes a potent greenhouse gas that negatively affects climate change. Prevotella is a very versatile microbe capable of processing a wide range of proteins and polysaccharides, and one of its fermentation products is propionate, a trait that appears conspicuous in P. ruminicola strain 23. Since propionate, but not acetate or butyrate, constitutes an H sink, propionate-producing microbes have the potential to reduce methane production. Accordingly, numerous studies suggest that members of the genus Prevotella have the ability to divert the hydrogen flow in glycolysis away from methanogenesis and in favor of propionic acid production. Intended for a broad audience in microbiology, our review summarizes the biochemistry of carbohydrate fermentation and subsequently discusses the evidence supporting the essential role of Prevotella in lignocellulose processing and its association with reduced methane emissions. We hope this article will serve as an introduction to novice Prevotella researchers and as an update to others more conversant with the topic.

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Section: Prevotella and Its Association With Reduced Methane...mentioning

confidence: 99%

Prevotella: A Key Player in Ruminal Metabolism

2022

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Estimation of greenhouse gas emissions from large ruminants in East Java using ARIMA

Widodo,

Anggraeny,

Setiasih

et al. 2024

International Conference on Organic and Applied Chemistry (Icoac) 2022

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Roe Deer Produce Less Methane and Harbor Distinct Gut Microbiota

et al. 2023

Fermentation

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Enteric methane (CH4) is an important greenhouse gas emitted by ruminants. Cervidae produces less CH4 than other ruminants, but the underlying mechanism remains unclear. Here, we measured and compared the gas production, nutrient digestibility, gut microbiota composition, and fermentation characteristics of roe deer (n = 4) and goats (n = 4). After the animals had adapted to the same total mixed ration for 21 days, the gas yield was measured using respiration chambers, and fecal samples were collected. The CH4 yield (g/kg DMI) was significantly lower in roe deer than in goats (p < 0.001), while the difference in carbon dioxide yield was not significant (p > 0.05). Roe deer showed lower digestibility of dry matter (p = 0.005), crude protein (p < 0.001), and neutral detergent fiber (p = 0.02) than goats. Principal coordinate analysis revealed that the bacterial and methanogen communities were significantly different between roe deer and goats, indicating a potential role of host genetics. Roe deer and goats showed enrichment of specific key bacterial and methanogen taxa. The relative abundances of Bifidobacterium, Ruminococcus, Succinivibrio, Treponema, Prevotella, Lachnoclostridium, Christensenellaceae R7, and members of the family Lachnospiraceae were higher in roe deer than in goats (p < 0.05). Methanocorpusculum and Methanobrevibacter were dominant methanogens in the guts of roe deer and goats, respectively, but their species compositions differed significantly between the host species. The predicted metabolic pathways, including those for butyrate and propionate, were significantly more abundant in roe deer than in goats (p < 0.05). The molar proportions of propionate and branched volatile fatty acids were significantly higher in roe deer and goats (p < 0.01), respectively. The variation in CH4 yield was characterized by correlations between digestibility, bacteria and methanogens between roe deer and goats, particularly for members within the taxa Lachnospiraceae and Methanosphaera. In summary, our results revealed that gut bacteria and methanogens differ significantly between high- and low-CH4 emitters and identified microbial taxa potentially involved in the mitigation of CH4 production in ruminants.

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Cashew nut shell liquid potentially mitigates methane emission from the feces of Thai native ruminant livestock by modifying fecal microbiota

Cited by 3 publications

References 40 publications

Prevotella: A Key Player in Ruminal Metabolism

Prevotella: A Key Player in Ruminal Metabolism

Estimation of greenhouse gas emissions from large ruminants in East Java using ARIMA

Roe Deer Produce Less Methane and Harbor Distinct Gut Microbiota

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