Evidence map›Paper›PMID 34828048›Full record

ArticleAnimals : an open access journal from MDPI2021

The Utilisation of Tannin Extract as a Dietary Additive in Ruminant Nutrition: A Meta-Analysis.

Yulianri Rizki Yanza, Ainissya Fitri, Bambang Suwignyo, Elfahmi, Nanik Hidayatik, Nur Rochmah Kumalasari, Agung Irawan, Anuraga Jayanegara

Open access · goldAbstract read
In one paragraph

Article in Animals : an open access journal from MDPI, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
12.8field-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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 75 citations in OpenAlex.

  1. Pooled it
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  5. Animals : an open access journal from MDPI · 2026
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  13. Plant tannin for grazing ruminant growth.Animal frontiers : the review magazine of animal agriculture · 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

8 authors at 6 institutions in 3 countries.

Yulianri Rizki YanzaAnimal Feed and Nutrition Modelling (AFENUE) Research Group, IPB University, Bogor 16680, West Java, Indonesia.ORCID 0000-0001-8433-7644
Ainissya FitriAnimal Feed and Nutrition Modelling (AFENUE) Research Group, IPB University, Bogor 16680, West Java, Indonesia.
Bambang SuwignyoDepartment of Animal Nutrition and Feed Science, Gadjah Mada University, Sleman 55281, Yogyakarta, Indonesia.
ElfahmiSchool of Pharmacy, Institut Teknologi Bandung, Bandung 40116, West Java, Indonesia.
Nanik HidayatikFaculty of Veterinary Medicine, Airlangga University, Surabaya 60115, East Java, Indonesia.
Nur Rochmah KumalasariAnimal Feed and Nutrition Modelling (AFENUE) Research Group, IPB University, Bogor 16680, West Java, Indonesia.
Agung IrawanAnimal Feed and Nutrition Modelling (AFENUE) Research Group, IPB University, Bogor 16680, West Java, Indonesia.ORCID 0000-0003-1179-0469
Anuraga JayanegaraAnimal Feed and Nutrition Modelling (AFENUE) Research Group, IPB University, Bogor 16680, West Java, Indonesia.ORCID 0000-0001-7529-9770
IPB University · IDAirlangga University · IDBandung Institute of Technology · IDIndonesian Institute of Sciences · IDSebelas Maret University · IDUniversitas Gadjah Mada · ID

Funding

Ministry of Education and Culture 077/SP2H/LT/DRPM/2021
6 · The paper itself

Abstract

The objective of this meta-analysis was to elucidate whether there are general underlying effects of dietary tannin extract supplementation on rumen fermentation, digestibility, methane production, performance, as well as N utilisation in ruminants. A total of 70 papers comprised of 348 dietary treatments (from both in vivo and in situ studies) were included in the study. The database was then statistically analysed by the mixed model methodology, in which different experiments were considered as random effects and tannin-related factors were treated as fixed effects. The results revealed that an increased level of tannin extract inclusion in the diet lowered ruminant intake, digestibility, and production performance. Furthermore, the evidence also showed that an increased level of tannin extract decreased animal N utilisation where most of rumen by-pass protein was not absorbed well in the small intestine and directly excreted in the faeces. Due to the type of tannin extract, HT is more favourable to maintain nutrient intake, digestibility, and production performance and to mitigate methane production instead of CT, particularly when supplemented at low (<1%) to moderate (~3%) levels.

Indexed as

meta-analysismethanemilkN utilisationrumenruminanttannin extract

Identifiers

PMID34828048
PMCPMC8614537
OpenAlexW3215440063

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.