Performance of crossbred dairy Friesian calves fed two levels of<i>Saccharomyces cerevisiae</i>: intake, digestion, ruminal fermentation, blood parameters and faecal pathogenic bacteria

Hassan, A. A.; Salem, Abdelfattah Z.M.; Kholif, Ahmed E.; Samir, Medjkal; Yacout, M. H.; Hafsa, Salma H. Abu; Mendoza, G. D.; Elghandour, Mona M.Y.; Ayala, Marcela; López, S.

doi:10.1017/s0021859616000599

Cited by 30 publications

(22 citation statements)

References 48 publications

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“…Galvão et al () noted that the duration of diarrhoea was decreased in neonates receiving active dry yeast with feed. Similarly, Hassan et al () reported that 2·5 and 5 g of S. cerevisiae improved intake of starter diet, berseem hay and total solids in crossbred Friesian calves resulting in an increase in fermented by‐products such as VFAs as well as a decrease in the concentration/production of rumen ammonia nitrogen.…”

Section: Effect Of Feeding Single‐cell Fungi On Ruminantsmentioning

confidence: 91%

“…Recently, supplementing live yeast in the diet of cattle grazing tropical pastures can benefit fibre‐degrading bacteria and increase fibre digestibility (Sousa et al ). Hassan et al () reported that supplementation with 2·5 and 5 g of yeast/calf increased digestion of ADF and NDF. In addition, the inclusion of 4 mg of S. cerevisiae resulted in increased dry matter degradability in sheep and steer inocula and increased degradation of organic matter in goat and sheep inocula (Vallejo‐Hernández et al ).…”

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

confidence: 99%

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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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Section: Effect Of Feeding Single‐cell Fungi On Ruminantsmentioning

confidence: 91%

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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“…Thus, looking for natural alternative has gained interest and importance. Phytogenic extracts (Cedillo et al, 2015), exogenous enzymes (Vallejo et al, 2016), and yeast (Hassan et al, 2016) are gaining increasing interest as feed additive for animal feeding. Such feed additives can reduce energy losses as methane (CH 4 ), and nitrogen (N) as ammonia, which reduce animal performance and contribute to the release of pollutants to the environment.…”

Section: Introductionmentioning

confidence: 99%

“…Saccharomyces cerevisiae is generally recognized as safe by the Food and Drug Administration organization of USA, and it can be legally used as an animal feed additive to stabilize rumen fermentation and prevents rumen microflora disorders (Elghandour et al, 2015;Hassan et al, 2016). Yeast has the ability to modify ruminal fermentation through provision of important nutrients and nutritional cofactors required for microbial growth and activity (Polyorach et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

The effect of garlic oil, xylanase enzyme and yeast on biomethane and carbon dioxide production from 60-d old Holstein dairy calves fed a high concentrate diet

Hernández

Kholif

Lugo-Coyote

et al. 2017

Journal of Cleaner Production

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Ruminal fermentation is accompanied by production of methane (CH 4) and carbon dioxide (CO 2) which are greenhouse gases (GHG) that cause environmental pollution. The effect of natural feed additives on the in vitro fermentation and production of CH 4 and CO 2 in dairy calf has had less attention. Therefore, this study aimed to evaluate the effect of garlic oil, xylanase enzyme, and yeast on in vitro biogas production from dairy calves fed a high concentrate diet. Rumen contents from 60-d old Holstein calves fed a concentrate diet were used as inoculum source. Garlic oil was included at 30,120, 250 and 500 mL/g dry matter (DM), while xylanase was included at 3 and 6 mL/g DM and yeast at 2 and 4 mg/g DM. The substrate used was the same as the diet fed to calves. Garlic oil linearly decreased (P < 0.05) in vitro DM digestibility and there were no differences among levels of either xylanase or yeast. Garlic oil decreased (P < 0.05) DM degradability while xylanase and yeast had no effect. The lag phase was linearly increased (P < 0.05) with increasing level of garlic oil. Garlic oil quadratically decreased CH 4 and CO 2 production. The control treatment had the highest CH 4 and CO 2 production followed by xylanase, yeast and garlic oil. Increasing level of xylanase and yeast increased (P < 0.05) CO 2 production. It can be concluded that garlic oil followed by yeast and then xylanase can be used to mitigate in vitro CH 4 and CO 2 production from dairy calves fed a high concentrate diet. However, further research is warranted to establish the efficacy of such feed additives in in vivo trials.

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“…The efficient reduction of such energy losses may be potentially used for the production of more meat and milk, rather than contributing to GHG production which impacts negatively on climate change (Eckard et al, 2010). Recently, the use of exogenous enzymes (Rojo et al, 2015) and yeast (Saccharomyces cerevisiae; SC) additives in ruminant diets has attracted considerable interest (Hassan et al, 2016). Many research studies have shown that supplementing exogenous enzymes in livestock diets improved forage quality , increase digestibility, rumen fermentation, and ruminant production (Valdes et al, 2015).…”

mentioning

confidence: 99%

Effectiveness of xylanase and Saccharomyces cerevisiae as feed additives on gas emissions from agricultural calf farms

Hernández

Kholif

Elghandour

et al. 2017

Journal of Cleaner Production

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a b s t r a c tThe aim of the present study was to evaluate the potential of supplementing calves' diets with exogenous enzymes (xylanase; XYL) and yeast (Saccharomyces cerevisiae [SC]) on the sustainable control of methane (CH 4 ) and carbon dioxide (CO 2 ) productions in agricultural calves farming. Three different levels of supplemented diets of XYL (0, 3 and 6 mg/g of dry matter (DM)), SC (0, 2 and 4 mg/g of DM) and mixture of XYL and SC (0, 2 mL XYL þ 2 mg SC, 6 mL XYL þ 4 mg SC/g of DM) were tested. Asymptotic gas production (GP) consistently decreased by each of the additives with the lowest value at the high dose of XYL þ SC mixture (P < 0.05) compared with the control and the low dose of XYL þ SC mixture. Methane production was reduced by additives inclusion (P < 0.05) when compared with the control treatment with no additive. Xylanase þ SC at all doses increased CO 2 production (P < 0.05) whereas the high dose had the most statistically significant (P < 0.05) reduction in GP and CH 4 production compared with control, XYL and SC additives at different doses. Interaction between additive and rumen liquor was observed for rate of GP (P ¼ 0.027) and initial delay before GP (P < 0.001). Inclusion of XYL, SC, and XYL þ SC mixture had less asymptotic GP while XYL þ SC mixture had the lowest initial delay (39%) before GP began. The XYL þ SC had the lowest rate of CH 4 production (9%) and highest asymptotic CO 2 production (81%). The findings of this study indicate that inclusion of XYL or SC additives can improve rumen fermentation and reduce greenhouse gases production. The study also established that the mixture of XYL and SC is more efficient in reducing gas and CH 4 emissions for cleaner environmental production conditions in calf farming.

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Performance of crossbred dairy Friesian calves fed two levels ofSaccharomyces cerevisiae: intake, digestion, ruminal fermentation, blood parameters and faecal pathogenic bacteria

Cited by 30 publications

References 48 publications

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

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

The effect of garlic oil, xylanase enzyme and yeast on biomethane and carbon dioxide production from 60-d old Holstein dairy calves fed a high concentrate diet

Effectiveness of xylanase and Saccharomyces cerevisiae as feed additives on gas emissions from agricultural calf farms

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