Evidence map›Paper›PMID 32005859›Full record

ArticleScientific reports2020

Dietary supplemental plant oils reduce methanogenesis from anaerobic microbial fermentation in the rumen.

Julio Ernesto Vargas, Sonia Andrés, Lorena López-Ferreras, Timothy J Snelling, David R Yáñez-Ruíz, Carlos García-Estrada, Secundino López

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
16.1field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

36 citing papers in PubMed, 102 citations in OpenAlex.

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  11. Impact of dietary supplementation of black soldier fly larvae (Animal nutrition (Zhongguo xu mu shou yi xue hui) · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 5 institutions in 4 countries.

Julio Ernesto VargasInstituto de Ganadería de Montaña (CSIC-Universidad de León), Departamento de Producción Animal, Universidad de León, E-24007, León, Spain.
Sonia AndrésInstituto de Ganadería de Montaña (CSIC-Universidad de León), Departamento de Producción Animal, Universidad de León, E-24007, León, Spain.
Lorena López-FerrerasInstituto de Ganadería de Montaña (CSIC-Universidad de León), Departamento de Producción Animal, Universidad de León, E-24007, León, Spain.
Timothy J SnellingAnimal Production, Welfare and Veterinary Sciences, Harper Adams University, Edgmond, Shropshire, TF10 8NB, UK.ORCID http://orcid.org/0000-0002-8952-8826
David R Yáñez-RuízEstación Experimental del Zaidín, CSIC, 18008, Granada, Spain.
Carlos García-EstradaINBIOTEC, Instituto de Biotecnología de León, Avda. Real no. 1, Parque Científico de León, 24006, León, Spain.
Secundino LópezInstituto de Ganadería de Montaña (CSIC-Universidad de León), Departamento de Producción Animal, Universidad de León, E-24007, León, Spain. s.lopez@unileon.es.ORCID http://orcid.org/0000-0001-6267-683X
Instituto de Ganadería de Montaña · ESEstación Experimental del Zaidín · ESInstituto de Biotecnología de León · ESUniversity of Aberdeen · GBUniversity of Caldas · CO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Ruminants contribute to the emissions of greenhouse gases, in particular methane, due to the microbial anaerobic fermentation of feed in the rumen. The rumen simulation technique was used to investigate the effects of the addition of different supplemental plant oils to a high concentrate diet on ruminal fermentation and microbial community composition. The control (CTR) diet was a high-concentrate total mixed ration with no supplemental oil. The other experimental diets were supplemented with olive (OLV), sunflower (SFL) or linseed (LNS) oils at 6%. Rumen digesta was used to inoculate the fermenters, and four fermentation units were used per treatment. Fermentation end-products, extent of feed degradation and composition of the microbial community (qPCR) in digesta were determined. Compared with the CTR diet, the addition of plant oils had no significant (P > 0.05) effect on ruminal pH, substrate degradation, total volatile fatty acids or microbial protein synthesis. Gas production from the fermentation of starch or cellulose were decreased by oil supplementation. Methane production was reduced by 21-28% (P < 0.001), propionate production was increased (P < 0.01), and butyrate and ammonia outputs and the acetate to propionate ratio were decreased (P < 0.001) with oil-supplemented diets. Addition of 6% OLV and LNS reduced (P < 0.05) copy numbers of total bacteria relative to the control. In conclusion, the supplementation of ruminant diets with plant oils, in particular from sunflower or linseed, causes some favorable effects on the fermentation processes. The addition of vegetable oils to ruminant mixed rations will reduce methane production increasing the formation of propionic acid without affecting the digestion of feed in the rumen. Adding vegetable fats to ruminant diets seems to be a suitable approach to decrease methane emissions, a relevant cleaner effect that may contribute to alleviate the environmental impact of ruminant production.

Indexed as

AmmoniaAnaerobiosisAnimalsDietDietary FiberDietary SupplementsDigestionFatty Acids, VolatileFermentationMethaneMicrobiotaPlant OilsPropionatesRumenSheepAmmoniaDietary FiberFatty Acids, VolatileMethanePlant OilsPropionatespropionic acid

Identifiers

PMID32005859
PMCPMC6994681
OpenAlexW3004409728

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.