Severe below-maintenance feed intake increases methane yield from enteric fermentation in cattle

Goopy, John P.; Korir, Daniel; Pelster, David E.; Ali, Asep Indra Munawar; Wassie, Shimels Eshete; Schlecht, Eva; Dickhoefer, Uta; Merbold, Lutz; Butterbach‐Bahl, Klaus

doi:10.1017/s0007114519003350

Cited by 47 publications

(49 citation statements)

References 29 publications

(33 reference statements)

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“…We found that propionate production through the acrylate pathway was probably increased while that through the succinate pathway was weakened under SFR condition. Additionally, the enhanced methanogenesis in SFR ewes was in agreement with the report by Goopy et al [ 32 ] who found that severe below-maintenance feed intake increased methane yield in cattle. As well-known that methanogenesis competes the same substrates such as hydrogen with propionate production [ 31 , 33 ].…”

Section: Discussionsupporting

confidence: 92%

Disruption of ruminal homeostasis by malnutrition involved in systemic ruminal microbiota-host interactions in a pregnant sheep model

Xue

Lin

et al. 2020

Microbiome

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Background Undernutrition is a prevalent and spontaneous condition in animal production which always affects microbiota-host interaction in gastrointestinal tract. However, how undernutrition affects crosstalk homeostasis is largely unknown. Here, we discover how undernutrition affects microbial profiles and subsequently how microbial metabolism affects the signal transduction and tissue renewal in ruminal epithelium, clarifying the detrimental effect of undernutrition on ruminal homeostasis in a pregnant sheep model. Results Sixteen pregnant ewes (115 days of gestation) were randomly and equally assigned to the control (CON) and severe feed restriction (SFR) groups. Ewes on SFR treatment were restricted to a 30% level of ad libitum feed intake while the controls were fed normally. After 15 days, all ewes were slaughtered to collect ruminal digesta for 16S rRNA gene and metagenomic sequencing and ruminal epithelium for transcriptome sequencing. Results showed that SFR diminished the levels of ruminal volatile fatty acids and microbial proteins and repressed the length, width, and surface area of ruminal papillae. The 16S rRNA gene analysis indicated that SFR altered the relative abundance of ruminal bacterial community, showing decreased bacteria about saccharide degradation (Saccharofermentans and Ruminococcus) and propionate genesis (Succiniclasticum) but increased butyrate producers (Pseudobutyrivibrio and Papillibacter). Metagenome analysis displayed that genes related to amino acid metabolism, acetate genesis, and succinate-pathway propionate production were downregulated upon SFR, while genes involved in butyrate and methane genesis and acrylate-pathway propionate production were upregulated. Transcriptome and real-time PCR analysis of ruminal epithelium showed that downregulated collagen synthesis upon SFR lowered extracellular matrix-receptor interaction, inactivated JAK3-STAT2 signaling pathway, and inhibited DNA replication and cell cycle. Conclusions Generally, undernutrition altered rumen bacterial community and function profile to decrease ruminal energy retention, promoted epithelial glucose and fatty acid catabolism to elevate energy supply, and inhibited the proliferation of ruminal epithelial cells. These findings provide the first insight into the systemic microbiota-host interactions that are involved in disrupting the ruminal homeostasis under a malnutrition pattern.

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Section: Discussionsupporting

confidence: 92%

Disruption of ruminal homeostasis by malnutrition involved in systemic ruminal microbiota-host interactions in a pregnant sheep model

Xue

Lin

et al. 2020

Microbiome

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“…It logically contributes to reducing the uncertainty of GHG emissions estimated at local scale (i.e., from individual farms and farm components) as well as at regional scale. Simultaneously, more recent work aims at testing promising interventions to reduce GHG emissions from agricultural activities (Goopy et al, 2020). A necessity for deriving accurate TIER 2 GHG emissions estimates are detailed household level data which then allow for detailed trade-off analysis between this pillar of CSA as well as the productivity pillar.…”

Section: Pillar 3: Mitigationmentioning

confidence: 99%

Improving Assessments of the Three Pillars of Climate Smart Agriculture: Current Achievements and Ideas for the Future

Wijk

Merbold

Hammond

et al. 2020

Front. Sustain. Food Syst.

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In this study we evaluate Climate Smart Agriculture (CSA) assessment tools with regard to their suitability for covering not only biophysical but also socioeconomic aspects of CSA, focusing on smallholder household level in Low and Middle Income Countries (LMIC). In this opinion piece we give a concise overview of the most recent developments in measuring key indicators and metrics for the three pillars of CSA (food security, adaptation, and mitigation) and give our opinion on how we think this would allow for improvements in the current state of assessing CSA in a smallholder farming context. Our assessment shows that all tools reviewed here have a biophysical lens while looking at productivity, and largely ignore potential social (e.g., food security, gender) and economic (poverty) aspects of the sustainability of intensified production. Mitigation was also analyzed in all approaches but few tools go beyond greenhouse gas emissions to analyse environmental sustainability (for example water quality, soil health, ecosystem services) more generically. Climate change adaptation was the CSA pillar with the weakest representation within the approaches reviewed here. Based on an overview of recent advantages in work focusing on CSA our key recommendations are (i) to make better use of recent advances in indicator development for sustainability assessments, including work on quantification of water and land footprints in relation to farm management; (ii) to use household level analyses to quantify pathways from productivity toward food security and improved nutrition as well as descripting drivers of adoption of adaptation options; and (iii) to use recent advances in system specific quantification of greenhouse gas emissions through both LMIC focused modeling and empirical work.

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“…the result of both grass and cattle interactions which affect rumen fermentation and, as such, represents a convenient basis for estimating enteric methane production. More work is required by research groups in tropical regions on the establishment of robust data sets from which accurate CH 4 yields could be derived for methane inventory purposes (Patra, 2017;Castelán Ortega et al, 2019;Goopy et al, 2020) and for evaluation of effective enteric CH 4 mitigation strategies.…”

Section: Enteric Methane Production By Cattle Fed Tropical Grassesmentioning

confidence: 99%

Review: Strategies for enteric methane mitigation in cattle fed tropical forages

Kú-Vera

Castelán-Ortega

Galindo-Maldonado

et al. 2020

Animal

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Methane (CH4) is a greenhouse gas (GHG) produced and released by eructation to the atmosphere in large volumes by ruminants. Enteric CH4 contributes significantly to global GHG emissions arising from animal agriculture. It has been contended that tropical grasses produce higher emissions of enteric CH4 than temperate grasses, when they are fed to ruminants. A number of experiments have been performed in respiration chambers and head-boxes to assess the enteric CH4 mitigation potential of foliage and pods of tropical plants, as well as nitrates (NO3−) and vegetable oils in practical rations for cattle. On the basis of individual determinations of enteric CH4 carried out in respiration chambers, the average CH4 yield for cattle fed low-quality tropical grasses (>70% ration DM) was 17.0 g CH4/kg DM intake. Results showed that when foliage and ground pods of tropical trees and shrubs were incorporated in cattle rations, methane yield (g CH4/kg DM intake) was decreased by 10% to 25%, depending on plant species and level of intake of the ration. Incorporation of nitrates and vegetable oils in the ration decreased enteric CH4 yield by ∼6% to ∼20%, respectively. Condensed tannins, saponins and starch contained in foliages, pods and seeds of tropical trees and shrubs, as well as nitrates and vegetable oils, can be fed to cattle to mitigate enteric CH4 emissions under smallholder conditions. Strategies for enteric CH4 mitigation in cattle grazing low-quality tropical forages can effectively increase productivity while decreasing enteric CH4 emissions in absolute terms and per unit of product (e.g. meat, milk), thus reducing the contribution of ruminants to GHG emissions and therefore to climate change.

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Severe below-maintenance feed intake increases methane yield from enteric fermentation in cattle

Cited by 47 publications

References 29 publications

Disruption of ruminal homeostasis by malnutrition involved in systemic ruminal microbiota-host interactions in a pregnant sheep model

Disruption of ruminal homeostasis by malnutrition involved in systemic ruminal microbiota-host interactions in a pregnant sheep model

Improving Assessments of the Three Pillars of Climate Smart Agriculture: Current Achievements and Ideas for the Future

Review: Strategies for enteric methane mitigation in cattle fed tropical forages

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