In vivo and in vitro effects of a blend of essential oils on rumen methane mitigation

Castro-Montoya, J.; Peiren, Nico; Cone, J.W.; Zweifel, Béatrice; Fievez, Veerle; Campeneere, Sam De

doi:10.1016/j.livsci.2015.08.010

Cited by 47 publications

(42 citation statements)

References 28 publications

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“…Castro-Montoya, et al [18] reported reduced CH 4 production for cows fed EO for a 6 week period. Reduced methane output, as well as greater milk production, was experienced for the duration of this trial.…”

Section: Discussionmentioning

confidence: 98%

An Essential Oil Blend Decreases Methane Emissions and Increases Milk Yield in Dairy Cows

Hart¹,

Jones²,

Waddams³

et al. 2019

OJAS

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This study was conducted to investigate the effect of a commercial essential oil (EO) additive on milk production and methane (CH 4) emissions from dairy cows. Early lactation Holstein-Friesian dairy cows were fed grass, whole crop wheat and corn silage total mixed ration. Cows were allocated to one of two experimental treatments: Control (no additive, CON) or 1 g/head/day of EO. Cows were housed in a free stall barn, split into two pens for the duration of the experiment. Two gas data loggers units used to measure CH 4 emissions were provided per pen for the duration of the 22 week-long study. Milk yield was determined daily, and milk components were analyzed every two weeks. CH 4 was recorded continuously, and daily values were tabulated. Body weight and body condition score were determined at the start and biweekly. Results were analyzed as a randomized complete block trial. In total, 149 cows participated in the study (76 CON, 73 EO). Milk yields were greater (P < 0.05) for the test treatment (28.3 CON, 31.2 EO) with no change in milk component concentrations. Milk component concentrations were unaffected (P > 0.05) by treatment. Yields of fat, protein, lactose, and solids were higher for EO fed cows (P < 0.05). CH 4 output was reduced with the EO compared to the CON treatment (411 g/day vs 438 g/day; 13.8 g/L of milk vs 17.2 g/L of milk, P < 0.05) over the duration of the trial. There were no effects of treatment on reproductive performance or the occurrence of mastitis. Feeding EO to dairy cows reduced CH 4 emissions whilst also increasing performance.

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Section: Discussionmentioning

confidence: 98%

An Essential Oil Blend Decreases Methane Emissions and Increases Milk Yield in Dairy Cows

Hart¹,

Jones²,

Waddams³

et al. 2019

OJAS

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“…Several studies have showed that EO can decrease CH 4 production in vitro [35], however the challenge consists in finding a combination of EO that reduces CH 4 production without a concomitant decrease in feed intake and productivity. Few studies have evaluated the effects of EO and their constituents on CH 4 emissions in vivo [3,8,13,16], and only one study has assessed long-term effect of EO on rumen methanogenesis [16]. Our meta-analysis showed that Agolin is an EO blend that leads to a decrease in CH 4 emissions, with the magnitude and consistency of this reduction dependent on the treatment duration.…”

Section: Methane Emissionsmentioning

confidence: 89%

“…Our meta-analysis compiling information of studies with a variable duration (from 22 to 365 days of treatment with Agolin) and a larger number of animals showed a small, but consistent, increase in milk yield (+ 2.0%) without major changes in milk composition and SCC. Most studies conducted in mid-lactating cows agreed that Agolin had a positive effect on milk yield [11][12][13]15], one study with a large number of early-lactating cows reported no effect on milk yield but increased milk fat percentage [10], while two studies in late-lactation noted a small decrease in milk yield but associated to an increase in milk fat percentage [8,16]. The use of energy corrected milk (ECM) and FPCM yield are gaining more attention because they integrate information concerning milk yield and milk composition, thus normalizing data across studies.…”

Section: Animal Performancementioning

confidence: 99%

“…The main active compounds of this product are food grade and chemically-defined plant extracts including coriander (Coriandrum sativum) seed oil (up to 10%), eugenol (up to 7%), geranyl acetate (up to 7%) and geraniol (up to 6%) along with some preservatives such as fumaric acid. Various authors have recently studied the effect of Agolin Ruminant on rumen fermentation in vitro [6][7][8] and in vivo [8][9][10][11][12][13][14][15][16] showing positive but variable results. As the product is in the market, numerous on-farm studies with dairy cows have been conducted in different countries over recent years, although the results have not been generally published in peer reviewed journals.…”

Section: Introductionmentioning

confidence: 99%

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A Meta-analysis Describing the Effects of the Essential oils Blend Agolin Ruminant on Performance, Rumen Fermentation and Methane Emissions in Dairy Cows

Belanche

Newbold

Morgavi

et al. 2020

Animals

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There is an increasing pressure to identify feed additives which increase productivity or decrease methane emissions. This paper aims to elucidate the effects of supplementing a specific essential oils blend Agolin® Ruminant on the productivity of dairy cows in comparison to non-treated animals. A total of 23 in vivo studies were identified in which Agolin was supplemented at 1 g/d per cow; then a meta-analysis was performed to determine the response ratio on milk yield, rumen fermentation, methane emissions and health. Results indicated that an adaptation period of at least 4 weeks of treatment is required. Whereas short-term studies showed minor and inconsistent effects of Agolin, long-term studies (>4 weeks of treatment) revealed that Agolin supplementation increases milk yield (+3.6%), fat and protein corrected milk (+4.1%) and feed efficiency (+4.4%) without further changes in milk composition and feed intake. Long-term treatment also decreased methane production per day (−8.8%), per dry matter intake (−12.9%) and per fat and protein corrected milk yield (−9.9%) without changes in rumen fermentation pattern. In conclusion, despite the mode of action is still unclear and the small number of studies considered, these findings show that Agolin represents an encouraging alternative to improve productivity in dairy cows.

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“…Use of IVFT offers the opportunity to evaluate a broad spectrum of chemical agents alone or in a number of combinations over a wide range of concentrations (e.g., Busquet et al, 2005;García-González et al, 2008). However, this technique does not generate reliable information for agents that are only effective for decreasing CH 4 emissions over an extended period (Castro-Montoya et al, 2015). Furthermore, results from screening studies Durmic et al, 2010) are often inconclusive and may be conflicting due to variation in dosage, chemical structure of the test substance or compound, diet, combination of treatments applied, adaptation of rumen microbes or the form in which an agent is introduced into the system (Cardozo et al, 2004.…”

Section: Tablementioning

confidence: 99%

Design, implementation and interpretation of in vitro batch culture experiments to assess enteric methane mitigation in ruminants—a review

Yáñez-Ruíz

Bannink

Dijkstra

et al. 2016

Animal Feed Science and Technology

136

120

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a b s t r a c tIn vitro fermentation techniques (IVFT) have been widely used to evaluate the nutritive value of feeds for ruminants and in the last decade to assess the effect of different nutritional strategies on methane (CH4) production. However, many technical factors may influence the results obtained. The present review has been prepared by the 'Global Network' FACCE-JPI international research consortium to provide a critical evaluation of the main factors that need to be considered when designing, conducting and interpreting IVFT experiments that investigate nutritional strategies to mitigate CH 4 emission from ruminants. Given the increasing and wide-scale use of IVFT, there is a need to critically review reports in the literature and establish what criteria are essential to the establishment and implementation of in vitro techniques. Key aspects considered include: i) donor animal species and number of animal used, ii) diet fed to donor animals, iii) collection and processing of rumen fluid as inoculum, iv) choice of substrate and incubation buffer, v) incubation procedures and CH 4 measurements, vi) headspace gas composition and vii) comparability of in vitro and in vivo measurements. Based on an evaluation of experimental evidence, a set of technical recommendations are presented to harmonize IVFT for feed evaluation, assessment of rumen function and CH 4 production.

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In vivo and in vitro effects of a blend of essential oils on rumen methane mitigation

Cited by 47 publications

References 28 publications

An Essential Oil Blend Decreases Methane Emissions and Increases Milk Yield in Dairy Cows

An Essential Oil Blend Decreases Methane Emissions and Increases Milk Yield in Dairy Cows

A Meta-analysis Describing the Effects of the Essential oils Blend Agolin Ruminant on Performance, Rumen Fermentation and Methane Emissions in Dairy Cows

Design, implementation and interpretation of in vitro batch culture experiments to assess enteric methane mitigation in ruminants—a review

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