Modulation of the equine microbiome by pasture and feed supplements: A metabolomics approach

Snalune, K. L.; Hunter, J. O.; Waring, R. H.; Cauchi, M.; Turner, C. and Batty, C. (2019). Modulation of the equine microbiome by pasture and feed supplements: A metabolomics approach. Integrative Food, Nutrition and Metabolism, 6(2) pp. 1–4.

DOI: https://doi.org/10.15761/IFNM.1000247

Abstract

Faecal VOCs (volatile organic compounds) were compared in horses and ponies before and after 6 weeks on Spring pasture and with and without a dietary supplement (ERME). The supplement was derived from malted barley and contained enzymes which degrade complex carbohydrates, including amylase, maltase, glucanases and fructanases. VOCs of faecal samples were analysed by selected ion flow tube mass spectrometry (SIFT-MS) and the results showed that the faecal microbiome was altered in different ways both by feeding on Spring pasture and by the dietary supplement. The composition of the equine gut microbiome (EGM) is therefore potentially a reflection of dietary constituents, both pasture and supplements; any metabolomic approach should take this into account since the EGM may have modulating effects on physiological parameters such as diabetes and obesity.

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