Effects of two equine digestive aid supplements on hindgut health.
Abstract: Gastrointestinal disease is the number one killer of horses. Little is known about the maintenance of microbes in the equine hindgut and how to distinguish a healthy gut in a live horse. Utilization of internal and external digestibility markers and starch fermentation has been extensively studied in ruminants and is the basis for research conducted on horses. The aims of this study were to investigate the effects of two equine feed digestive aid supplements on hindgut health () as reflected in fecal pH and digestibility and to compare and validate DM digestibility measurements through the use of internal and external markers such as chromium oxide (), lignin (), indigestible ADF (), indigestible NDF (), and indigestible lignin (). Nine mature Quarter horses (six geldings, three mares) were used in a crossover design, three feeding periods of 17 d (51 d total), using three treatments: control, no feed additive (), Smartpak (; Plymouth, MA), or Platinum Performance (; Buellton, CA). Both SP and PP contained a strain of , whereas SP further supplied mannanoligosaccharides () and fructooligosaccharides () and PP supplied Within the 17-d period, horses were offered orchard grass hay and sweet cob grain and the assigned treatment daily and four CR cookies to deliver 8 g/d of CR for the last 7 d of each period. Total feces were collected from 15 to 17 d. Feed and fecal samples were dried, ground, and sent to ANALAB (Fulton, IL) for nutrient analysis. Duplicate samples of feed and feces were placed in ruminally cannulated cows for in situ determination of iADF, iNDF, and iLig to estimate digestibility. Estimated CR fecal output, CR DMI, and DM digestibilities were evaluated using the root mean square prediction error percentage of the observed mean (), concordance correlation coefficient (), and Nash-Sutcliffe efficiency methods. Marker predictive ability tests showed iADF to have the least amount of bias with the smallest RMSPE (4%), largest CCC (0.43), and the largest amount of random bias (error of dispersion = 0.45). Supplementation of PP decreased CR DM digestibility ( < 0.02). Smartpak increased fecal pH ( < 0.09), but PP had no effect on fecal pH. Therefore, SP had a beneficial effect on HGH that is believed to be due to MOS and FOS.
© The Author(s) 2018. Published by Oxford University Press on behalf of the American Society of Animal Science.
Publication Date: 2018-09-10 PubMed ID: 32704804PubMed Central: PMC7200547DOI: 10.1093/tas/txy103Google Scholar: Lookup
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Summary
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The research examines the effects of two feed digestive aid supplements on the health of a horse’s hindgut, utilizing fecal pH and digestibility as measures. The results indicate that one supplement, Smartpak, increased fecal pH, which is beneficial to the horse’s gut health.
Research Design and Methodology
- The study employed nine mature Quarter horses (six geldings and three mares) in a crossover design. This means each horse took turn to receive each treatment in three feeding periods of 17 days each, totalling 51 days.
- Three treatments were administered: a control (no feed additive), Smartpak (SP), and Platinum Performance (PP). Both SP and PP contained a strain of Aspergillus, with SP containing additional mannanoligosaccharides and fructooligosaccharides, and PP supplying a further unknown component.
- During each 17-day period, horses were given orchard grass hay, sweet cob grain and the designated treatment daily. Additionally, four cookies containing chromium oxide were given to each horse to deliver a daily intake of 8 grams of chromium for the last seven days of each period.
- Fecal samples were collected from day 15 to 17 evaluated for their dry matter (DM) content using internal and external markers such as chromium oxide, lignin, indigestible acid detergent fiber (iADF), indigestible neutral detergent fiber (iNDF), and indigestible lignin (iLig).
Results and Observations
- Fecal pH and digestibility were used as markers to assess the health and functioning of the horse’s hindgut.
- The results showed that both supplements had different effects on hindgut health. Smartpak increased fecal pH (beneficial), but Platinum Performance did not have any effect.
- Further analysis showed Supplement PP actually decreased the dry matter intake digestibility, meaning horses would derive less nutritional benefit from their feed.
- The internal and external marker predictions showed that indigestible ADF had the least amount of bias with a root mean square prediction error of 4%, a concordance correlation coefficient of 0.43, and a random bias (error of dispersion) of 0.45.
Conclusion
- The study concluded that Smartpak had a beneficial effect on hindgut health in horses which could be attributed to its inclusion of mannanoligosaccharides and fructooligosaccharides, while Platinum Performance was detrimental to digestibility, leading to less nutritional intake from feed.
Cite This Article
APA
Johnson ACB, Rossow HA.
(2018).
Effects of two equine digestive aid supplements on hindgut health.
Transl Anim Sci, 3(1), 340-349.
https://doi.org/10.1093/tas/txy103 Publication
Researcher Affiliations
- Department of Population Health and Reproduction, SVM VMTRC University of California-Davis, Tulare, CA.
- Department of Population Health and Reproduction, SVM VMTRC University of California-Davis, Tulare, CA.
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Citations
This article has been cited 1 times.- Nikvand AA, Nouri M, Gharibi D, Rakhshandeh R. Population shifts in some faeces and rumen bacteria profiles and subsequent blood LPS and lactate concentrations in lambs in the early period of subacute ruminal acidosis.. Vet Med Sci 2023 Mar;9(2):891-898.
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