Analyze Diet
Animals : an open access journal from MDPI2022; 12(12); 1496; doi: 10.3390/ani12121496

Feeding a Saccharomyces cerevisiae Fermentation Product (Olimond BB) Does Not Alter the Fecal Microbiota of Thoroughbred Racehorses.

Abstract: Feed supplements such as fermentation products (SCFP) alter immune responses in horses. The purpose of this study was to analyze whether a prebiotic activity of the SCFP alters the gut microbiome in horses. Racehorses were fed either SCFP (Olimond BB, OLI, = 6) or placebo pellets (PLA, = 5) for 43 days. Fecal microbiota analysis was performed using 16S rRNA gene sequencing. The numbers and function of circulating immune cell subpopulations were analyzed by flow cytometry. SCFP supplementation resulted in non-consistent differences in fecal microbiota between the PLA and OLI during the feeding period. Rather, the individual animal had the highest impact on fecal microbiota composition. OLI and PLA horses displayed the same changes in numbers of blood leukocyte subpopulations over time. One day after a booster vaccination against equine influenza during the feeding period, the alpha diversity of fecal microbiota of PLA horses was significantly higher compared to OLI horses. This suggests that SCFP feeding altered the vaccination-induced spectrum of released mediators, potentially affecting gut microbiota. The overall non-consistent findings argue against a strong prebiotic effect of Olimond BB on the microbiota in racehorses. Fecal microbiota differences between the groups were also noticed outside the feeding period and, hence, are most likely not caused by the SCFP additive.
Publication Date: 2022-06-08 PubMed ID: 35739833PubMed Central: PMC9219515DOI: 10.3390/ani12121496Google Scholar: Lookup
The Equine Research Bank provides access to a large database of publicly available scientific literature. Inclusion in the Research Bank does not imply endorsement of study methods or findings by Mad Barn.
  • Journal Article

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

This research paper investigates whether feeding a Saccharomyces cerevisiae fermentation product (SCFP) known as Olimond BB significantly affects the gut microbiota and immune response in thoroughbred racehorses. The study found insignificant variations in the fecal microbiota of horses fed with SCFP compared to those fed a placebo, suggesting Olimond BB may not have a strong prebiotic effect on the horse’s microbiota.

Research approach and methodology

  • The experiment involved racehorses which were randomly divided into two groups. One group (OLI, n=6) was fed with SCFP (Olimond BB), while the other group (PLA, n=5) was given placebo pellets. The duration of the feeding period was 43 days.
  • The study investigated the variations in the fecal microbiota in horses using 16S rRNA gene sequencing. This sequencing is widely used in studying bacterial taxonomy and ecology and was applied to analyze genotype variations in the fecal samples of the horses.
  • Additionally, the function and quantities of different immune cells circulating in the horses’ blood were examined utilizing flow cytometry. This technique measures the physical and chemical characteristics of cells or particles as they flow in a fluid stream through a beam of light.

Findings

  • Results showed the supplementation of SCFP resulted in non-consistent differences in the fecal microbiota within the two groups during the feeding period. It was identified that individual horses’ natural variations had the most influence on the composition of their fecal microbiota.
  • Over time, both OLI and PLA groups displayed comparable changes in their blood leukocyte subpopulations, which are vital components of the immune system.
  • A noteworthy observation was made one day post an equine influenza booster vaccination administered within the feeding period. PLA horses exhibited higher alpha diversity in their fecal microbiota compared to the OLI horses, implying that SCFP feeding potentially altered the released mediators from the vaccination and consequently influenced the gut microbiota.
  • However, due to the inconsistent findings, the study concludes that Olimond BB lacks significant prebiotic effects on the gut microbiota of racehorses. Fecal microbiota variations between the two diet groups were also found outside the feeding period, leading the researchers to contend that these changes were not likely caused by the SCFP supplement.

Cite This Article

APA
Lucassen A, Hankel J, Finkler-Schade C, Osbelt L, Strowig T, Visscher C, Schuberth HJ. (2022). Feeding a Saccharomyces cerevisiae Fermentation Product (Olimond BB) Does Not Alter the Fecal Microbiota of Thoroughbred Racehorses. Animals (Basel), 12(12), 1496. https://doi.org/10.3390/ani12121496

Publication

ISSN: 2076-2615
NlmUniqueID: 101635614
Country: Switzerland
Language: English
Volume: 12
Issue: 12
PII: 1496

Researcher Affiliations

Lucassen, Alexandra
  • Institute of Immunology, University of Veterinary Medicine Foundation, 30559 Hannover, Germany.
Hankel, Julia
  • Institute of Animal Nutrition, University of Veterinary Medicine Foundation, 30559 Hannover, Germany.
Finkler-Schade, Christa
  • Schade & Partner, 27283 Verden, Germany.
Osbelt, Lisa
  • Helmholtz Center for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany.
  • Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany.
Strowig, Till
  • Helmholtz Center for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany.
  • Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany.
Visscher, Christian
  • Institute of Animal Nutrition, University of Veterinary Medicine Foundation, 30559 Hannover, Germany.
Schuberth, Hans-Joachim
  • Institute of Immunology, University of Veterinary Medicine Foundation, 30559 Hannover, Germany.

Conflict of Interest Statement

The authors declare no conflict of interest.

References

This article includes 58 references
  1. Kauter A, Epping L, Semmler T, Antao EM, Kannapin D, Stoeckle SD, Gehlen H, Lübke-Becker A, Günther S, Wieler LH, Walther B. The gut microbiome of horses: current research on equine enteral microbiota and future perspectives.. Anim Microbiome 2019 Nov 13;1(1):14.
    doi: 10.1186/s42523-019-0013-3pmc: PMC7807895pubmed: 33499951google scholar: lookup
  2. McDermott AJ, Huffnagle GB. The microbiome and regulation of mucosal immunity.. Immunology 2014 May;142(1):24-31.
    doi: 10.1111/imm.12231pmc: PMC3992044pubmed: 24329495google scholar: lookup
  3. Kim LM, Morley PS, Traub-Dargatz JL, Salman MD, Gentry-Weeks C. Factors associated with Salmonella shedding among equine colic patients at a veterinary teaching hospital.. J Am Vet Med Assoc 2001 Mar 1;218(5):740-8.
    doi: 10.2460/javma.2001.218.740pubmed: 11280409google scholar: lookup
  4. Belkaid Y, Harrison OJ. Homeostatic Immunity and the Microbiota.. Immunity 2017 Apr 18;46(4):562-576.
  5. Tun HM, Li S, Yoon I, Meale SJ, Azevedo PA, Khafipour E, Plaizier JC. Saccharomyces cerevisiae fermentation products (SCFP) stabilize the ruminal microbiota of lactating dairy cows during periods of a depressed rumen pH.. BMC Vet Res 2020 Jul 11;16(1):237.
    doi: 10.1186/s12917-020-02437-wpmc: PMC7353776pubmed: 32653000google scholar: lookup
  6. Xiao JX, Alugongo GM, Chung R, Dong SZ, Li SL, Yoon I, Wu ZH, Cao ZJ. Effects of Saccharomyces cerevisiae fermentation products on dairy calves: Ruminal fermentation, gastrointestinal morphology, and microbial community.. J Dairy Sci 2016 Jul;99(7):5401-5412.
    doi: 10.3168/jds.2015-10563pubmed: 27157569google scholar: lookup
  7. Alugongo GM, Xiao JX, Chung YH, Dong SZ, Li SL, Yoon I, Wu ZH, Cao ZJ. Effects of Saccharomyces cerevisiae fermentation products on dairy calves: Performance and health.. J Dairy Sci 2017 Feb;100(2):1189-1199.
    doi: 10.3168/jds.2016-11399pubmed: 28012624google scholar: lookup
  8. Lin CY, Alexander C, Steelman AJ, Warzecha CM, de Godoy MRC, Swanson KS. Effects of a Saccharomyces cerevisiae fermentation product on fecal characteristics, nutrient digestibility, fecal fermentative end-products, fecal microbial populations, immune function, and diet palatability in adult dogs1.. J Anim Sci 2019 Apr 3;97(4):1586-1599.
    doi: 10.1093/jas/skz064pmc: PMC6447260pubmed: 30770927google scholar: lookup
  9. de Oliveira Matheus LF, Risolia LW, Ernandes MC, de Souza JM, Oba PM, Vendramini THA, Pedrinelli V, Henríquez LBF, de Oliveira Massoco C, Pontieri CFF, Brunetto MA. Effects of Saccharomyces cerevisiae cell wall addition on feed digestibility, fecal fermentation and microbiota and immunological parameters in adult cats.. BMC Vet Res 2021 Nov 16;17(1):351.
    doi: 10.1186/s12917-021-03049-8pmc: PMC8596940pubmed: 34784923google scholar: lookup
  10. Daly K, Proudman CJ, Duncan SH, Flint HJ, Dyer J, Shirazi-Beechey SP. Alterations in microbiota and fermentation products in equine large intestine in response to dietary variation and intestinal disease.. Br J Nutr 2012 Apr;107(7):989-95.
    doi: 10.1017/S0007114511003825pubmed: 21816118google scholar: lookup
  11. Dougal K, de la Fuente G, Harris PA, Girdwood SE, Pinloche E, Geor RJ, Nielsen BD, Schott HC 2nd, Elzinga S, Newbold CJ. Characterisation of the faecal bacterial community in adult and elderly horses fed a high fibre, high oil or high starch diet using 454 pyrosequencing.. PLoS One 2014;9(2):e87424.
  12. Salem SE, Maddox TW, Berg A, Antczak P, Ketley JM, Williams NJ, Archer DC. Variation in faecal microbiota in a group of horses managed at pasture over a 12-month period.. Sci Rep 2018 May 31;8(1):8510.
    doi: 10.1038/s41598-018-26930-3pmc: PMC5981443pubmed: 29855517google scholar: lookup
  13. Schoster A, Guardabassi L, Staempfli HR, Abrahams M, Jalali M, Weese JS. The longitudinal effect of a multi-strain probiotic on the intestinal bacterial microbiota of neonatal foals.. Equine Vet J 2016 Nov;48(6):689-696.
    doi: 10.1111/evj.12524pubmed: 26509834google scholar: lookup
  14. Grimm P, Combes S, Pascal G, Cauquil L, Julliand V. Dietary composition and yeast/microalgae combination supplementation modulate the microbial ecosystem in the caecum, colon and faeces of horses.. Br J Nutr 2020 Feb 28;123(4):372-382.
    doi: 10.1017/S0007114519002824pubmed: 31690358google scholar: lookup
  15. Cooke CG, Gibb Z, Harnett JE. The Safety, Tolerability and Efficacy of Probiotic Bacteria for Equine Use.. J Equine Vet Sci 2021 Apr;99:103407.
    doi: 10.1016/j.jevs.2021.103407pubmed: 33781424google scholar: lookup
  16. Gerstner K, Liesegang A. Effect of a montmorillonite-bentonite-based product on faecal parameters of horses.. J Anim Physiol Anim Nutr (Berl) 2018 Apr;102 Suppl 1:43-46.
    doi: 10.1111/jpn.12888pubmed: 29623686google scholar: lookup
  17. Valigura HC, Leatherwood JL, Martinez RE, Norton SA, White-Springer SH. Dietary supplementation of a Saccharomyces cerevisiae fermentation product attenuates exercise-induced stress markers in young horses.. J Anim Sci 2021 Aug 1;99(8).
    doi: 10.1093/jas/skab199pmc: PMC8521742pubmed: 34181712google scholar: lookup
  18. Martinez RE, Leatherwood JL, Arnold CE, Glass KG, Walter KW, Valigura HC, Norton SA, White-Springer SH. Responses to an intra-articular lipopolysaccharide challenge following dietary supplementation of Saccharomyces cerevisiae fermentation product in young horses.. J Anim Sci 2021 Oct 1;99(10).
    doi: 10.1093/jas/skab272pmc: PMC8557629pubmed: 34619765google scholar: lookup
  19. Lucassen A, Finkler-Schade C, Schuberth HJ. A Saccharomyces cerevisiae Fermentation Product (Olimond BB) Alters the Early Response after Influenza Vaccination in Racehorses.. Animals (Basel) 2021 Sep 18;11(9).
    doi: 10.3390/ani11092726pmc: PMC8466050pubmed: 34573692google scholar: lookup
  20. Lynn DJ, Pulendran B. The potential of the microbiota to influence vaccine responses.. J Leukoc Biol 2018 Feb;103(2):225-231.
    doi: 10.1189/jlb.5MR0617-216Rpmc: PMC5921907pubmed: 28864446google scholar: lookup
  21. Jamieson AM. Influence of the microbiome on response to vaccination.. Hum Vaccin Immunother 2015;11(9):2329-31.
  22. Lynn DJ, Benson SC, Lynn MA, Pulendran B. Modulation of immune responses to vaccination by the microbiota: implications and potential mechanisms.. Nat Rev Immunol 2022 Jan;22(1):33-46.
    doi: 10.1038/s41577-021-00554-7pmc: PMC8127454pubmed: 34002068google scholar: lookup
  23. Nguyen QN, Himes JE, Martinez DR, Permar SR. The Impact of the Gut Microbiota on Humoral Immunity to Pathogens and Vaccination in Early Infancy.. PLoS Pathog 2016 Dec;12(12):e1005997.
  24. Borey M, Blanc F, Lemonnier G, Leplat JJ, Jardet D, Rossignol MN, Ravon L, Billon Y, Bernard M, Estellé J, Rogel-Gaillard C. Links between fecal microbiota and the response to vaccination against influenza A virus in pigs.. NPJ Vaccines 2021 Jul 22;6(1):92.
    doi: 10.1038/s41541-021-00351-2pmc: PMC8298503pubmed: 34294732google scholar: lookup
  25. Mir RA, Schaut RG, Allen HK, Looft T, Loving CL, Kudva IT, Sharma VK. Cattle intestinal microbiota shifts following Escherichia coli O157:H7 vaccination and colonization.. PLoS One 2019;14(12):e0226099.
  26. Caporaso JG, Lauber CL, Walters WA, Berg-Lyons D, Lozupone CA, Turnbaugh PJ, Fierer N, Knight R. Global patterns of 16S rRNA diversity at a depth of millions of sequences per sample.. Proc Natl Acad Sci U S A 2011 Mar 15;108 Suppl 1(Suppl 1):4516-22.
    doi: 10.1073/pnas.1000080107pmc: PMC3063599pubmed: 20534432google scholar: lookup
  27. Edgar RC. UPARSE: highly accurate OTU sequences from microbial amplicon reads.. Nat Methods 2013 Oct;10(10):996-8.
    doi: 10.1038/nmeth.2604pubmed: 23955772google scholar: lookup
  28. Quast C, Pruesse E, Yilmaz P, Gerken J, Schweer T, Yarza P, Peplies J, Glöckner FO. The SILVA ribosomal RNA gene database project: improved data processing and web-based tools.. Nucleic Acids Res 2013 Jan;41(Database issue):D590-6.
    doi: 10.1093/nar/gks1219pmc: PMC3531112pubmed: 23193283google scholar: lookup
  29. Wang Q, Garrity GM, Tiedje JM, Cole JR. Naive Bayesian classifier for rapid assignment of rRNA sequences into the new bacterial taxonomy.. Appl Environ Microbiol 2007 Aug;73(16):5261-7.
    doi: 10.1128/AEM.00062-07pmc: PMC1950982pubmed: 17586664google scholar: lookup
  30. McMurdie PJ, Holmes S. phyloseq: an R package for reproducible interactive analysis and graphics of microbiome census data.. PLoS One 2013;8(4):e61217.
  31. Kassambara A. Pipe-Friendly Framework for Basic Statistical Tests [R Package Rstatix Version 0.7.0]. .
  32. Fox J. John Fox and Sanford Weisberg. 3rd ed. SAGE; Thousand Oaks, CA, USA: 2019.
  33. Oksanen J, Blanchet F, Friendly M, Kindt R, Legendre P, McGlinn D, Minchin P, O’Hara R, Simpson G, Solymos P. Vegan: Community Ecology Package. R Package Version 2.5-7. .
  34. Love MI, Huber W, Anders S. Moderated estimation of fold change and dispersion for RNA-seq data with DESeq2.. Genome Biol 2014;15(12):550.
    doi: 10.1186/s13059-014-0550-8pmc: PMC4302049pubmed: 25516281google scholar: lookup
  35. Robinson MD, McCarthy DJ, Smyth GK. edgeR: a Bioconductor package for differential expression analysis of digital gene expression data.. Bioinformatics 2010 Jan 1;26(1):139-40.
  36. Benjamini Y, Hochberg Y. Controlling the False Discovery Rate: A Practical and Powerful Approach to Multiple Testing. J. R. Stat. Soc. Ser. B Methodol. 1995;57:289–300.
  37. Leclere M, Costa MC. Fecal microbiota in horses with asthma.. J Vet Intern Med 2020 Mar;34(2):996-1006.
    doi: 10.1111/jvim.15748pmc: PMC7096608pubmed: 32128892google scholar: lookup
  38. Fernandes KA, Rogers CW, Gee EK, Kittelmann S, Bolwell CF, Bermingham EN, Biggs PJ, Thomas DG. Resilience of Faecal Microbiota in Stabled Thoroughbred Horses Following Abrupt Dietary Transition between Freshly Cut Pasture and Three Forage-Based Diets.. Animals (Basel) 2021 Sep 6;11(9).
    doi: 10.3390/ani11092611pmc: PMC8471312pubmed: 34573577google scholar: lookup
  39. Sorensen RJ, Drouillard JS, Douthit TL, Ran Q, Marthaler DG, Kang Q, Vahl CI, Lattimer JM. Effect of hay type on cecal and fecal microbiome and fermentation parameters in horses.. J Anim Sci 2021 Jan 1;99(1).
    doi: 10.1093/jas/skaa407pmc: PMC7846146pubmed: 33515482google scholar: lookup
  40. Uhr GT, Dohnalová L, Thaiss CA. The Dimension of Time in Host-Microbiome Interactions.. mSystems 2019 Jan-Feb;4(1).
    doi: 10.1128/mSystems.00216-18pmc: PMC6381226pubmed: 30801030google scholar: lookup
  41. Fernandes KA, Kittelmann S, Rogers CW, Gee EK, Bolwell CF, Bermingham EN, Thomas DG. Faecal microbiota of forage-fed horses in New Zealand and the population dynamics of microbial communities following dietary change.. PLoS One 2014;9(11):e112846.
  42. Costa MC, Stämpfli HR, Arroyo LG, Allen-Vercoe E, Gomes RG, Weese JS. Changes in the equine fecal microbiota associated with the use of systemic antimicrobial drugs.. BMC Vet Res 2015 Feb 3;11:19.
    doi: 10.1186/s12917-015-0335-7pmc: PMC4323147pubmed: 25644524google scholar: lookup
  43. Steelman SM, Chowdhary BP, Dowd S, Suchodolski J, Janečka JE. Pyrosequencing of 16S rRNA genes in fecal samples reveals high diversity of hindgut microflora in horses and potential links to chronic laminitis.. BMC Vet Res 2012 Nov 27;8:231.
    doi: 10.1186/1746-6148-8-231pmc: PMC3538718pubmed: 23186268google scholar: lookup
  44. Costa MC, Silva G, Ramos RV, Staempfli HR, Arroyo LG, Kim P, Weese JS. Characterization and comparison of the bacterial microbiota in different gastrointestinal tract compartments in horses.. Vet J 2015 Jul;205(1):74-80.
    doi: 10.1016/j.tvjl.2015.03.018pubmed: 25975855google scholar: lookup
  45. Górniak W, Cholewińska P, Szeligowska N, Wołoszyńska M, Soroko M, Czyż K. Effect of Intense Exercise on the Level of Bacteroidetes and Firmicutes Phyla in the Digestive System of Thoroughbred Racehorses.. Animals (Basel) 2021 Jan 24;11(2).
    doi: 10.3390/ani11020290pmc: PMC7910997pubmed: 33498857google scholar: lookup
  46. Mach N, Ruet A, Clark A, Bars-Cortina D, Ramayo-Caldas Y, Crisci E, Pennarun S, Dhorne-Pollet S, Foury A, Moisan MP, Lansade L. Priming for welfare: gut microbiota is associated with equitation conditions and behavior in horse athletes.. Sci Rep 2020 May 20;10(1):8311.
    doi: 10.1038/s41598-020-65444-9pmc: PMC7239938pubmed: 32433513google scholar: lookup
  47. Montgomery L, Flesher B, Stahl D. Transfer of Bacteroides succinogenes (Hungate) to Fibrobacter gen. nov. as Fibrobacter succinogenes comb. nov. and Description of Fibrobacter intestinalis sp. nov.. Int. J. Syst. Bacteriol. 1988;38:430–435.
    doi: 10.1099/00207713-38-4-430google scholar: lookup
  48. Ransom-Jones E, Jones DL, McCarthy AJ, McDonald JE. The Fibrobacteres: an important phylum of cellulose-degrading bacteria.. Microb Ecol 2012 Feb;63(2):267-81.
    doi: 10.1007/s00248-011-9998-1pubmed: 22213055google scholar: lookup
  49. Neumann AP, McCormick CA, Suen G. Fibrobacter communities in the gastrointestinal tracts of diverse hindgut-fermenting herbivores are distinct from those of the rumen.. Environ Microbiol 2017 Sep;19(9):3768-3783.
    doi: 10.1111/1462-2920.13878pmc: PMC5599356pubmed: 28752955google scholar: lookup
  50. Costa MC, Stämpfli HR, Allen-Vercoe E, Weese JS. Development of the faecal microbiota in foals.. Equine Vet J 2016 Nov;48(6):681-688.
    doi: 10.1111/evj.12532pubmed: 26518456google scholar: lookup
  51. Murray J.-A.M.D., Brown S, O’Shaughnessy P, Monteiro A, Warren H, Hastie P.M. Effect of Live Yeast Culture Supplementation on Fibrolytic and Saccharolytic Bacterial Populations in the Feces of Horses Fed a High-Fiber or High-Starch Diet. J. Equine Vet. Sci. 2017;51:41–45.
  52. Elzinga S, Weese J.S., Adams A.A. Comparison of the Fecal Microbiota in Horses with Equine Metabolic Syndrome and Metabolically Normal Controls Fed a Similar All-Forage Diet. J. Equine Vet. Sci. 2016;44:9–16.
  53. Mohajeri MH, La Fata G, Steinert RE, Weber P. Relationship between the gut microbiome and brain function.. Nutr Rev 2018 Jul 1;76(7):481-496.
    doi: 10.1093/nutrit/nuy009pubmed: 29701810google scholar: lookup
  54. Deters EL, Stokes RS, Genther-Schroeder ON, Hansen SL. Effects of a Saccharomyces cerevisiae fermentation product in receiving diets of newly weaned beef steers. I. Growth performance and antioxidant defense1.. J Anim Sci 2018 Sep 7;96(9):3897-3905.
    doi: 10.1093/jas/sky246pmc: PMC6127776pubmed: 29912425google scholar: lookup
  55. Cortés-Coronado R.F., Gómez-Rosales S, Angeles M.D.L., Casaubon-Huguenin M.T., Sørensen-Dalgaard T. Influence of a yeast fermented product on the serum levels of the mannan-binding lectin and the antibodies against the Newcastle disease virus in Ross broilers. J. Appl. Poult. Res. 2017;26:38–49.
    doi: 10.3382/japr/pfw044google scholar: lookup
  56. Vaishnava S, Yamamoto M, Severson KM, Ruhn KA, Yu X, Koren O, Ley R, Wakeland EK, Hooper LV. The antibacterial lectin RegIIIgamma promotes the spatial segregation of microbiota and host in the intestine.. Science 2011 Oct 14;334(6053):255-8.
    doi: 10.1126/science.1209791pmc: PMC3321924pubmed: 21998396google scholar: lookup
  57. Shi N, Li N, Duan X, Niu H. Interaction between the gut microbiome and mucosal immune system.. Mil Med Res 2017;4:14.
    doi: 10.1186/s40779-017-0122-9pmc: PMC5408367pubmed: 28465831google scholar: lookup
  58. Okumura R, Takeda K. Roles of intestinal epithelial cells in the maintenance of gut homeostasis.. Exp Mol Med 2017 May 26;49(5):e338.
    doi: 10.1038/emm.2017.20pmc: PMC5454438pubmed: 28546564google scholar: lookup

Citations

This article has been cited 2 times.
  1. Ganda E, Chakrabarti A, Sardi MI, Tench M, Kozlowicz BK, Norton SA, Warren LK, Khafipour E. Saccharomyces cerevisiae fermentation product improves robustness of equine gut microbiome upon stress.. Front Vet Sci 2023;10:1134092.
    doi: 10.3389/fvets.2023.1134092pubmed: 36908513google scholar: lookup
  2. Perricone V, Sandrini S, Irshad N, Comi M, Lecchi C, Savoini G, Agazzi A. The Role of Yeast Saccharomyces cerevisiae in Supporting Gut Health in Horses: An Updated Review on Its Effects on Digestibility and Intestinal and Fecal Microbiota.. Animals (Basel) 2022 Dec 9;12(24).
    doi: 10.3390/ani12243475pubmed: 36552396google scholar: lookup