ArticlePloS one2019
Effects of oregano essential oil on the ruminal pH and microbial population of sheep.
Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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Who cites it
23 citing papers in PubMed, 55 citations in OpenAlex.
- Encapsulation of essential oils from tropical plants as a strategy to mitigate methane emissions and improve nutritional status of ruminants: A review.Animal nutrition (Zhongguo xu mu shou yi xue hui) · 2026Review
- Microfused essential oil supplementation remodels the plasma metabolome and identifies candidate biomarkers associated with growth performance in Katahdin ewes.Frontiers in veterinary science · 2026Article
- Complementary Effects of Essential Oils and Organic Acids on Rumen Physiology as Alternatives to Antibiotic Feed Additives.Animals : an open access journal from MDPI · 2025Review
- Evaluation of ginger straw as a forage source for goats: Effects on performance, ruminal fermentation, meat quality and immunity.Animal nutrition (Zhongguo xu mu shou yi xue hui) · 2025Article
- Loading of Oregano Oil in Natural Nanogel and Preliminary Studies on Its Antiviral Activity on Betacoronavirus 1.Molecules (Basel, Switzerland) · 2025Article
- Oregano essential oil enhanced body weight and well-being by modulating the HPA axis and 23-nordeoxycholic acid of cecal microbiota in Holstein steers under cold stress.Animal microbiome · 2025Article
- Effects of different doses of oregano essential oil on growth performance, health parameters, and the gut microbiome-metabolome profile in heat-stressed Pinan cattle (Piedmontese × Nanyang).Frontiers in microbiology · 2025Article
- Effect of different genetic backgrounds on rumen microbiota and serum metabolic phenotypes in beef cattle.Scientific reports · 2024Article
- Rumen microbiota succession throughout the perinatal period and its association with postpartum production traits in dairy cows: A review.Animal nutrition (Zhongguo xu mu shou yi xue hui) · 2024Review
- Oregano Essential Oil as a Natural Plant Additive Affects Growth Performance and Serum Antibody Levels by Regulating the Rumen Microbiota of Calves.Animals : an open access journal from MDPI · 2024Article
- Assessing the In Vitro and In Vivo Effect of Supplementation with a Garlic (Veterinary sciences · 2023Article
- Effects of Oregano Essential Oil on IgAAnimals : an open access journal from MDPI · 2023Article
- Encapsulated Essential Oils Improve the Growth Performance of Meat Ducks by Enhancing Intestinal Morphology, Barrier Function, Antioxidant Capacity and the Cecal Microbiota.Antioxidants (Basel, Switzerland) · 2023Article
- Essential Oils as a Dietary Additive for Small Ruminants: A Meta-Analysis on Performance, Rumen Parameters, Serum Metabolites, and Product Quality.Veterinary sciences · 2022Review
- Effects of a Polyherbal Dietary Additive on Performance, Dietary Energetics, Carcass Traits, and Blood Metabolites of Finishing Lambs.Metabolites · 2022Article
- Optimized Ensiling Conditions and Microbial Community in Mulberry Leaves Silage With Inoculants.Frontiers in microbiology · 2022Article
- Progressive microbial adaptation of the bovine rumen and hindgut in response to a step-wise increase in dietary starch and the influence of phytogenic supplementation.Frontiers in microbiology · 2022Article
- Effect of Zanthoxylum bungeanum essential oil on rumen enzyme activity, microbiome, and metabolites in lambs.PloS one · 2022Article
- Oregano Essential Oils Mediated Intestinal Microbiota and Metabolites and Improved Growth Performance and Intestinal Barrier Function in Sheep.Frontiers in immunology · 2022Article
- Effects of Cornus and Its Mixture with Oregano and Thyme Essential Oils on Dairy Sheep Performance and Milk, Yoghurt and Cheese Quality under Heat Stress.Animals : an open access journal from MDPI · 2021Article
Corrections and comments
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Authors and funding
11 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Oregano essential oil (OEO), which has antimicrobial properties, may be used for altering the ruminal pH and microbial populations of sheep, as observed by the altered volatile fatty acid patterns. To further elucidate the effects of OEO on ruminal pH and microbial populations of sheep, 3 German merino sheep × local sheep crossbred rams with permanent ruminal fistulas were randomly assigned to a 3 × 3 Latin square design with 12-d periods. The treatments were as follows: control (CON); OEO4: OEO supplied at 4 g•d-1; and OEO7: OEO supplied at 7 g•d-1. Starting on day 11, rumen fluid was collected at 0 h, and at 4, 8, 12, 24 and 48 h after supplying OEO, and then pH values of rumen fluid were immediately measured. The abundance of microbial populations was determined by using qPCR. The ruminal pH values were similar among the sheep from all treatments. The abundance of ruminal fungi was higher for the sheep supplied OEO7 compared with the sheep supplied CON and OEO4, especially at 4 and 12 h. The abundance of ruminal protozoa decreased with supplied OEO, indicating that OEO could inhibit the protozoa. The abundance of the total ruminal bacteria was similar for the sheep from all treatments, but R. flavefaciens, R. albus and F. succinogenes increased in the sheep supplied OEO4 compared with those in the sheep supplied CON, however, the sheep supplied OEO7 had higher abundances of R. flavefaciens than the sheep supplied CON. These results demonstrated that supplying OEO to sheep did not affect the ruminal pH but could shift the rumen microbial population to one with less protozoa. Supplying OEO can preferentially enhance the growth of certain rumen microbial populations, but the shifts were influenced by the supply rate. Therefore, supplying low amount (i.e. 4 g•d-1) of OEO could have positive effects on ruminal microbial populations, whereas supplying elevated doses of OEO could be detrimental to those same ruminal microbial populations.
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