Environmental efficiency of Saccharomyces cerevisiae on methane production in dairy and beef cattle via a meta-analysis

Darabighane, Babak; Salem, Abdelfattah Z.M.; Aghjehgheshlagh, Farzad Mirzaei; Mahdavi, Ali; Zarei, A.; Elghandour, Mona M.M.Y.; López, Secundino

doi:10.1007/s11356-018-3878-x

Cited by 21 publications

(13 citation statements)

References 30 publications

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“…Diverse effects of yeast supplementation on CH 4 synthesis were attributed to varying yeast strains, dosages, and diets utilized in the trials [28]. Yeast can be used to minimize CH 4 emissions and was shown to lower methane production in the rumen by encouraging acetogens to use more hydrogen in the process of acetate formation by Darabighane et al [37]. In this study, the methanogen population was reduced with yeast supplementation and was lowest at 3 g/hd/d.…”

Section: Ruminal Volatile Fatty Acid (Vfa) Profiles and Methane (Ch 4 ) Productionmentioning

confidence: 57%

Addition of Active Dry Yeast Could Enhance Feed Intake and Rumen Bacterial Population While Reducing Protozoa and Methanogen Population in Beef Cattle

et al. 2021

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Urea–lime-treated rice straw fed to Thai native beef cattle was supplemented with dry yeast (DY) (Saccharomyces cerevisiae) to assess total feed intake, nutrient digestibility, rumen microorganisms, and methane (CH4) production. Sixteen Thai native beef cattle at 115 ± 10 kg live weight were divided into four groups that received DY supplementation at 0, 1, 2, and 3 g/hd/d using a randomized completely block design. All animals were fed concentrate mixture at 0.5% of body weight, with urea–lime-treated rice straw fed ad libitum. Supplementation with DY enhanced total feed intake and digestibility of neutral detergent fiber and acid detergent fiber (p < 0.05), but dry matter, organic matter and crude protein were similar among treatments (p > 0.05). Total volatile fatty acid (VFA) and propionic acid (C3) increased (p < 0.05) with 3 g/hd/d DY supplementation, while acetic acid (C2) and butyric acid (C4) decreased. Protozoal population and CH4 production in the rumen decreased as DY increased (p < 0.05). Populations of F. succinogenes and R. flavefaciens increased (p < 0.05), whereas methanogen population decreased with DY addition at 3 g/hd/d, while R. albus was stable (p > 0.05) throughout the treatments. Thus, addition of DY to cattle feed increased feed intake, rumen fermentation, and cellulolytic bacterial populations.

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Section: Ruminal Volatile Fatty Acid (Vfa) Profiles and Methane (Ch 4 ) Productionmentioning

confidence: 57%

Addition of Active Dry Yeast Could Enhance Feed Intake and Rumen Bacterial Population While Reducing Protozoa and Methanogen Population in Beef Cattle

et al. 2021

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“…Additionally, inclusion of either a dead or live form of S. cerevisiae has little to no impact on nutrient digestibility or rumen fermentation patterns in beef heifers (Vyas et al 2014). A meta-analysis by Darabighane et al (2019) using data from 1990-2016 observed no significant reduction in CH 4 production through the use of probiotics.…”

Section: Probioticsmentioning

confidence: 99%

Feed additives as a strategic approach to reduce enteric methane production in cattle: modes of action, effectiveness and safety

et al. 2021

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Increasing consumer concern in greenhouse-gas (GHG) contributions from cattle is pushing the livestock industry to continue to improve their sustainability goals. As populations increase, particularly in low-income countries, the demand for animal-sourced foods will place further pressure to reduce emission intensity. Enteric methane (CH 4 ) production contributes to most of the GHG from livestock; therefore, it is key to mitigating such emissions. Feed additives have primarily been used to increase animal productivity, but advances in understanding the rumen has resulted in their development to mitigate CH 4 emissions. The present study reviewed some of the main feed additives with a potential to reduce enteric CH 4 emissions, focusing on in vivo studies. Feed additives work by either inhibiting methanogenesis or modifying the rumen environment, such that CH 4 production (g/day) is reduced. Feed additives that inhibit methanogenesis or compete with substrate for methanogens include 3-nitroxypropanol (3NOP), nitrates, and halogenated compounds containing organisms such as macroalgae. Although 3NOP and macroalgae affect methyl-coenzyme M reductase enzyme that is necessary in CH 4 biosynthesis, the former is more specific to methanogens. In contrast, nitrates reduce CH 4 emissions by competing with methanogens for hydrogen. However, nitrite could accumulate in blood and be toxic to ruminants. Rumen modifiers do not act directly on methanogens but rather on the conditions that promote methanogenesis. These feed additives include lipids, plant secondary compounds and essential oils. The efficacy of lipids has been studied extensively, and although supplementation with mediumchain and polyunsaturated fatty acids has shown substantial reduction in enteric CH 4 production, the results have been variable. Similarly, secondary plant compounds and essential oils have shown inconsistent results, ranging from substantial reduction to modest increase in enteric CH 4 emissions. Due to continued interest in this area, research is expected to accelerate in developing feed additives that can provide options in mitigating enteric CH 4 emissions.

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“…There are several strategies for CH 4 mitigation from ruminants that have been reviewed (Martin et al ). Live‐cell yeast and yeast products have recently been proposed to mitigate CH4 and it has been shown to reduce methane production in the rumen by stimulating acetogens to consume more hydrogen for acetate production (Darabighane et al ). In a previous study, Wang et al () reported that red yeast rice ( Monascus purpureus ) reduced the production of methane in goats.…”

Section: Impact Of Feeding Single‐cell Fungi On Rumen Fermentation Acmentioning

confidence: 99%

Dynamic role of single‐celled fungi in ruminal microbial ecology and activities

Elghandour

Khusro²,

Adegbeye

et al. 2019

J Appl Microbiol

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Summary In ruminants, high fermentation capacity is necessary to develop more efficient ruminant production systems. Greater level of production depends on the ability of the microbial ecosystem to convert organic matter into precursors of milk and meat. This has led to increased interest by animal nutritionists, biochemists and microbiologists in evaluating different strategies to manipulate the rumen biota to improve animal performance, production efficiency and animal health. One of such strategies is the use of natural feed additives such as single‐celled fungi yeast. The main objectives of using yeasts as natural additives in ruminant diets include; (i) to prevent rumen microflora disorders, (ii) to improve and sustain higher production of milk and meat, (iii) to reduce rumen acidosis and bloat which adversely affect animal health and performance, (iv) to decrease the risk of ruminant‐associated human pathogens and (v) to reduce the excretion of nitrogenous‐based compounds, carbon dioxide and methane. Yeast, a natural feed additive, has the potential to enhance feed degradation by increasing the concentration of volatile fatty acids during fermentation processes. In addition, microbial growth in the rumen is enhanced in the presence of yeast leading to the delivery of a greater amount of microbial protein to the duodenum and high nitrogen retention. Single‐celled fungi yeast has demonstrated its ability to increase fibre digestibility and lower faecal output of organic matter due to improved digestion of organic matter, which subsequently improves animal productivity. Yeast also has the ability to alter the fermentation process in the rumen in a way that reduces methane formation. Furthermore, yeast inclusion in ruminant diets has been reported to decrease toxins absorption such as mycotoxins and promote epithelial cell integrity. This review article provides information on the impact of single‐celled fungi yeast as a feed supplement on ruminal microbiota and its function to improve the health and productive longevity of ruminants.

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Environmental efficiency of Saccharomyces cerevisiae on methane production in dairy and beef cattle via a meta-analysis

Cited by 21 publications

References 30 publications

Addition of Active Dry Yeast Could Enhance Feed Intake and Rumen Bacterial Population While Reducing Protozoa and Methanogen Population in Beef Cattle

Addition of Active Dry Yeast Could Enhance Feed Intake and Rumen Bacterial Population While Reducing Protozoa and Methanogen Population in Beef Cattle

Feed additives as a strategic approach to reduce enteric methane production in cattle: modes of action, effectiveness and safety

Dynamic role of single‐celled fungi in ruminal microbial ecology and activities

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