Live yeast supplementation improves rumen fibre degradation in cattle grazing tropical pastures throughout the year

Sousa, Dannylo Oliveira de; Oliveira, Chiara Albano de Araújo; Velasquez, Alejandro Vargas; Souza, Juliana; Chevaux, E.; Mari, Lucas José; Silva, Luís Felipe Prada e

doi:10.1016/j.anifeedsci.2017.12.015

Cited by 33 publications

(34 citation statements)

References 35 publications

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“…Supplementation of 5 g of yeast per day in dairy cows improved VFA production by 9·65% after 30 days and 2% after 60 days (Doleźal et al ). Sousa et al () reported that yeast supplementation increased total VFA, decreased acetate proportion and increase propionate proportion. There was a tendency for higher valerate proportion when steers were fed live yeast.…”

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

confidence: 99%

“…Changes in rumen microbial population are expected to stimulate digestion of carbohydrates in the rumen, which likely explains the increased rumen NDF digestion (Diaz et al ). 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.…”

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

confidence: 99%

“…Additionally, yeast supplements have been shown to improve the growth of lactic acid-utilizing micro-organisms and reduce lactic acid accumulation in the rumen (Marden et al 2008), remove oxygen and increase the total rumen microflora (Chaucheyras-Durand and Durand 2010). Recently, live yeast supplements in the diet was reported to improve rumen fibre degradation in cattle grazing tropical pastures (Sousa et al 2018). A positive effect of yeast in reducing the severity of SARA irrespective of its viability was observed by (Vyas et al 2014) and this may also reduce the content of LPS in the rumen.…”

Section: Introductionmentioning

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

confidence: 99%

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

confidence: 99%

Section: Introductionmentioning

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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“…Bacteria account for 95% of the total amount of rumen microorganisms [24], and thus are the main factor to modulate digestive and metabolic activity of the rumen [25]. Butyrivibrio brisolvens, Fibrobacter succinogenes, Ruminococcus avefaciens, and Ruminococcus albus are reported the four most important cellulolytic bacteria for digestion and utilization of ber in the rumen [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Reducing dietary cation–anion difference seldom affects rumen fermentation, cellulolytic bacteria populations, and microbiota in goats

Yang

Tian

Jian

et al. 2020

Preprint

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Background: Dietary cation–anion difference (DCAD) has been receiving increased attention in recent years; however, information on the rumen fermentation, cellulolytic bacteria populations, and microbiota of goats fed a low-DCAD diet is less. This study aimed to evaluate the feasibility of feeding a low-DCAD diet for goats with emphasis on rumen fermentation parameters, cellulolytic bacteria populations and microbiota. Growth performance, urine pH, and plasma metabolites were also analyzed as well. Materials and method: Eighteen goats were randomly allocated to 3 treatments with six replicates of each treatment and 1 goat per replicate. Animals were fed diets with varying DCAD levels at +338 (High DCAD; HD), +152 (Control; CON), and −181 (Low DCAD; LD). This study includes 15-d experimental period and 30-d adaption period. Results: The DCAD level did not affect the rumen fermentation parameters including pH, buffering capability, acetic acid, propionic acid, butyric acid, total volatile fatty acids, and ratio of acetic acid/propionic acid (P > 0.05). The 4 main ruminal cellulolytic bacteria populations including Fibrobacter succinogenes, Ruminococcus flavefaciens, Butyrivibrio fibrisolvens and Ruminococcus albus did not differ from DCAD treatments (P > 0.05). The DCAD levels did not affect bacterial richness and diversity indicated by the indices Chao, Ace and Simpson and Shannon, respectively (P > 0.05). Both weighted UniFrac and unweighted UniFrac showed no difference in the composition of rumen microbiota for CON, HD and LD (P > 0.05). At the phylum level, Bacteroidetes was the predominant phylum followed by Firmicutes, Synergistetes, Proteobacteria, Spirochaetae, and Tenericutes, and they showed no difference (P > 0.05) in relative abundances except for Firmicutes, which was higher in HD and LD compared to CON (P < 0.05). At the genus level, relative abundance of 11 genera were not affected by DCAD treatments (P > 0.05). Level of DCAD had no effect (P > 0.05) on growth performance including dry matter intake, average net gain, average daily gain, and feed conversion ratio; and nutrients digestibility of crude protein, neutral detergent fiber, acid detergent fiber, and organic matter (P > 0.05). Urine pH in LD was lower than HD and CON (P < 0.05). LD resulted in higher plasma calcium than HD and CON (P < 0.05) but not for other plasma metabolites (P > 0.05). Conclusion: We conclude that, with regard to the great importance of rumen fermentation, these results suggest that reducing DCAD is unharmful for rumen status and provide the feasibility of feeding a low-DCAD to goats.

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“…The most widely used additives in animal nutrition over the past decade are probiotics. Probiotics are live microorganisms that can provide a health benefit for the host animals and improve forage digestibility as well [ 3 ]. Saccharomyces cerevisiae (SC) has been found to improve ruminal fermentation [ 4 ], enhance microbial growth, and improve the stability of rumen fermentation.…”

Section: Introductionmentioning

confidence: 99%

The effects of Saccharomyces cerevisiae supplementation on intake, nutrient digestibility, and rumen fluid pH in Awassi female lambs

Obeidat¹,

Mahmoud²,

Obeidat³

et al. 2018

Vet World

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Aim:The aim of this study was to evaluate the effect of feeding low (LO)- or high (HI)-fiber diets supplemented with Saccharomyces cerevisiae (SC) on nutrient intake, digestibility, nitrogen balance, rumen fluid pH, and serum concentrations of glucose and urea nitrogen in Awassi female lambs in a 2×2 factorial arrangement of treatments.Materials and Methods:Experimental diets were as follows: (1) LO-fiber diet with no SC supplementation (−LO), (2) LO-fiber diet supplemented with SC (+LO), (3) HI-fiber diet with no SC supplementation (−HI), or (4) HI-fiber diet supplemented with SC (+HI). Eight female lambs were used in a replicated 4×4 Latin square design with 15-day experimental periods (10-day adaptation period and 5-day collection period).Results:A fiber×SC interaction (p≤0.05) was detected for dry matter (DM) and crude protein (CP) intake among diets showing greater DM and CP intake for +LO diet compared to +HI group supplemented with SC, whereas −LO and −HI were intermediate. A fiber×SC interaction (p=0.05) was also detected for the neutral detergent fiber (NDF) intake among diets. Intake of NDF was greater for the –HI diet compared with +LO and –LO diets. Similarly, NDF intake was greater for +HI diet than –LO diet. A tendency (p=0.07) for a fiber×SC interaction was detected for acid detergent fiber (ADF) intake among diets as well. ADF intake tended to be greater for HI-fiber diets. No difference was observed in the rumen fluid pH for lambs fed with the different diets. No fiber×SC interactions were detected for the digestibility of DM, CP, NDF, and ADF among dietary treatments. Digestibility of DM was greater (72.9 g/100 g vs. 67.1 g/100 g; p=0.0002) for LO versus HI fiber. However, NDF and ADF digestibilities were greater (60.8 and 61.9 g/100 g vs. 55.8 and 52.7 g/100 g for NDF and ADF digestibility, respectively; p≤0.01) for the HI-fiber than the LO-fiber diets.Conclusion:Results obtained in the current study indicate that SC supplementation has a minimal effect on the performance of Awassi female lambs fed with varying fiber levels.

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Live yeast supplementation improves rumen fibre degradation in cattle grazing tropical pastures throughout the year

Cited by 33 publications

References 35 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

Reducing dietary cation–anion difference seldom affects rumen fermentation, cellulolytic bacteria populations, and microbiota in goats

The effects of Saccharomyces cerevisiae supplementation on intake, nutrient digestibility, and rumen fluid pH in Awassi female lambs

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