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J Vet Intern Med. 2015 May-Jun;29(3):925-31. doi: 10.1111/jvim.12584. Epub 2015 Apr 22.

Effect of a probiotic on prevention of diarrhea and Clostridium difficile and Clostridium perfringens shedding in foals.

Author information

1
Faculty of Health and Medical Science, University of Copenhagen, Frederiksberg, Denmark.
2
Vetsuisse Faculty, Equine Department, Clinic for Equine Internal Medicine, University of Zurich, Zurich, Switzerland.
3
Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada.
4
Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada.

Abstract

BACKGROUND:

Up to 60% of foals develop diarrhea within 6 months after birth. Preventive measures are limited but potentially probiotics could be used.

OBJECTIVE:

To evaluate the effect of a newly designed probiotic on the incidence of foal diarrhea in a randomized field trial.

ANIMALS:

Seventy-two healthy neonatal foals.

METHODS:

Randomized, placebo-controlled field trial. Foals were administered a placebo or probiotic for 3 weeks and monitored for an additional week. A total of 3 fecal samples were taken from each foal at biweekly intervals. Statistical modeling was applied for comparison of incidence and duration of diarrhea and fecal shedding of Clostridium perfringens and Clostridium difficile between treatment and age groups.

RESULTS:

The overall incidence of diarrhea was 41 of 72 (59%) and did not differ (P = 0.37) between treatment groups. Foals treated with probiotics were more likely to develop diarrhea requiring veterinary intervention (P = 0.007). Age had a significant effect on incidence of diarrhea (P < 0.001); foals 8-15 days old having the highest probability of developing diarrhea. Duration of diarrhea and soft feces were not significantly different between groups. The prevalence of C. perfringens shedding was 55% with no difference between treatment groups (P = 0.23). The prevalence of C. difficile shedding was 11%.

CONCLUSION AND CLINICAL IMPORTANCE:

There was no benefit of administering a 3-week course of probiotics, but potential adverse effects were noted. Whether the probiotics lacked a clinical effect, or the choice of strains or dose was inadequate, is unknown. Clostridial shedding was not influenced by probiotics despite in vitro activity of probiotics.

KEYWORDS:

Bifidobacterium; Lactobacillus

PMID:
25903509
PMCID:
PMC4895414
DOI:
10.1111/jvim.12584
[Indexed for MEDLINE]
Free PMC Article

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