Isolation and characterization of novel sulphate-reducing Fusobacterium sp. and their effects on in vitro methane emission and digestion of wheat straw by rumen fluid from Indian riverine buffaloes

Paul, S. S.; Deb, S. M.; Singh, Dharminder

doi:10.1016/j.anifeedsci.2011.04.062

Cited by 16 publications

(12 citation statements)

References 20 publications

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“…For instance, a decrease in CH 4 emission was observed in an in vitro study using the newly identified SRB, Fusobacterium sp., as a DFM with a high sulphate diet. The CH 4 production at 72 h was decreased from 2.66 to 1.64 mmol/g digested dry matter (DM) without H 2 S accumulation (Paul et al, 2011). Fibre digestion and number of cellulolytic bacteria were also increased.…”

Section: Sulphate-reducing Bacteriamentioning

confidence: 77%

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The use of direct-fed microbials for mitigation of ruminant methane emissions: a review

Jeyanathan

Martin

Morgavi

2014

Animal

132

115

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Concerns about the environmental effect and the economic burden of methane (CH 4 ) emissions from ruminants are driving the search for ways to mitigate rumen methanogenesis. The use of direct-fed microbials (DFM) is one possible option to decrease CH 4 emission from ruminants. Direct-fed microbials are already used in ruminants mainly to increase productivity and to improve health, and are readily accepted by producers and consumers alike. However, studies on the use of DFM as rumen CH 4 mitigants are scarce. A few studies using Saccharomyces cerevisiae have shown a CH 4 -decreasing effect but, to date, there has not been a systematic exploration of DFM as modulators of rumen methanogenesis. In this review, we explored biochemical pathways competing with methanogenesis that, potentially, could be modulated by the use of DFM. Pathways involving the redirection of H 2 away from methanogenesis and pathways producing less H 2 during feed fermentation are the preferred options. Propionate formation is an example of the latter option that in addition to decrease CH 4 formation increases the retention of energy from the diet. Homoacetogenesis is a pathway using H 2 to produce acetate, however up to now no acetogen has been shown to efficiently compete with methanogens in the rumen. Nitrate and sulphate reduction are pathways competing with methanogenesis, but the availability of these substances in the rumen is limited. Although there were studies using nitrate and sulphate as chemical additives, use of DFM for improving these processes and decrease the accumulation of toxic metabolites needs to be explored more. There are some other pathways such as methanotrophy and capnophily or modes of action such as inhibition of methanogens that theoretically could be provided by DFM and affect methanogenesis. We conclude that DFM is a promising alternative for rumen methane mitigation that should be further explored for their practical usage.

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Section: Sulphate-reducing Bacteriamentioning

confidence: 77%

“…Recently, a sulphate-reducing bacterium belonging to the genus Fusobacterium was isolated from buffalo (Paul et al, 2011) suggesting that there may be other not-yet-cultured SRB in the rumen. The ability of SRB to compete with methanogens is largely determined by the introduction of sulphate into the rumen.…”

Section: Sulphate-reducing Bacteriamentioning

confidence: 99%

The use of direct-fed microbials for mitigation of ruminant methane emissions: a review

Jeyanathan

Martin

Morgavi

2014

Animal

132

115

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“…Brièvement, certaines bactéries sont capables d'oxyder l'hydrogène en utilisant des sulfates, des nitrates ou d'autres composés azotés ; la proportion, normalement faible, de ces bactéries dans la microflore ruminale, augmente en présence de leur substrat de prédilection. L'utilisation de sulfates présente le risque de formation d'hydrogène sulfuré toxique, mais un essai in vitro récent a montré que les microorganismes sulfato-réducteurs pouvaient diminuer la production de méthane sans perturber la digestion et sans accroître la production d'hydrogène sulfuré (Paul et al 2011). La conversion de nitrates en ammoniac est compétitive vis-à-vis de la méthanogenèse.…”

Section: / Sulfates Et Nitratesunclassified

Leviers d’action pour réduire la production de méthane entérique par les ruminants

et al. 2011

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Cet article fait le point des connaissances sur différentes pistes pour réduire la production de méthane entérique par les ruminants,en privilégiant les approches in vivo, et évalue les possibilités d'application pratique. Il est connu que l'accroissement du pourcentagede concentré dans la ration réduit la production de méthane par kg de matière sèche ingérée. Cet effet est toutefois plus sensible pourdes proportions élevées de concentré. Les céréales diminuent plus la production de méthane que les concentrés riches en fibres.L'addition de lipides à la ration a un effet significatif pour réduire les émissions de méthane. Parmi les fourrages, l'ensilage de maïsentraîne des émissions plus faibles que l'ensilage d'herbe ou le foin ; mais les différences induites entre stades de végétation de l'herbeou entre graminées et légumineuses sont faibles, et parfois controversées. De très nombreux extraits de plantes et autres additifsaux modes d'action divers ont été testés. Les plantes riches en tannins et les tannins extraits des plantes sont efficaces pour réduire leméthane mais le risque de diminution de la digestibilité de la ration doit être considéré. Les autres additifs nécessitent des étudessupplémentaires pour attester leur efficacité sur le long terme. Parmi les biotechnologies, celles visant à réorienter la productiond'hydrogène vers d'autres produits que le méthane sont séduisantes, mais pas encore mises au point. L'accroissement du niveau deproduction des animaux entraîne une réduction de la production de méthane qui est particulièrement marquée quand elle estrapportée au kg de lait ou de viande. Enfin, il y a des différences entre animaux dans l'efficacité globale de production, appréciée parl'ingestion rapportée à un même niveau de production. Les animaux les plus efficaces produisent moins de méthane par kg de lait oude viande. L'article met l'accent sur la nécessité de ne pas considérer la diminution du méthane seule, mais d'évaluer l'efficacité desstratégies proposées sur l'ensemble des GES.

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“…The boxes without dark shade could be the targets for CH 4 mitigation and boxes with dark shade are the options that have been studied either in vitro or in vivo to reduce CH 4 production [52,109,116,123,126,131]. …”

Section: Introductionmentioning

confidence: 99%

“…The population of SRB in the rumen is low (10 5 to 10 6 cells/mL) and largely from the genus Desulfovibrio and Desulfotomaculum [124,125]. Recently, another SRB belonging to the genus Fusobacterium was isolated from buffalo [126]. Only few studies were conducted on effect of sulphate supplementation alone in rumen methanogenesis [127,128] due to their toxic end product hydrogen sulfide (H 2 S).…”

Section: Introductionmentioning

confidence: 99%

Advanced estimation and mitigation strategies: a cumulative approach to enteric methane abatement from ruminants

Islam¹,

Lee²

2019

J Anim Sci Technol

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Methane, one of the important greenhouse gas, has a higher global warming potential than that of carbon dioxide. Agriculture, especially livestock, is considered as the biggest sector in producing anthropogenic methane. Among livestock, ruminants are the highest emitters of enteric methane. Methanogenesis, a continuous process in the rumen, carried out by archaea either with a hydrogenotrophic pathway that converts hydrogen and carbon dioxide to methane or with methylotrophic pathway, which the substrate for methanogenesis is methyl groups. For accurate estimation of methane from ruminants, three methods have been successfully used in various experiments under different environmental conditions such as respiration chamber, sulfur hexafluoride tracer technique, and the automated head-chamber or GreenFeed system. Methane production and emission from ruminants are increasing day by day with an increase of ruminants which help to meet up the nutrient demands of the increasing human population throughout the world. Several mitigation strategies have been taken separately for methane abatement from ruminant productions such as animal intervention, diet selection, dietary feed additives, probiotics, defaunation, supplementation of fats, oils, organic acids, plant secondary metabolites, etc. However, sustainable mitigation strategies are not established yet. A cumulative approach of accurate enteric methane measurement and existing mitigation strategies with more focusing on the biological reduction of methane emission by direct-fed microbials could be the sustainable methane mitigation approaches.

show abstract

Isolation and characterization of novel sulphate-reducing Fusobacterium sp. and their effects on in vitro methane emission and digestion of wheat straw by rumen fluid from Indian riverine buffaloes

Cited by 16 publications

References 20 publications

The use of direct-fed microbials for mitigation of ruminant methane emissions: a review

The use of direct-fed microbials for mitigation of ruminant methane emissions: a review

Leviers d’action pour réduire la production de méthane entérique par les ruminants

Advanced estimation and mitigation strategies: a cumulative approach to enteric methane abatement from ruminants

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