Impact of barley form on equine total tract fibre digestibility and colonic microbiota

Animal : an International Journal of Animal Bioscience
C PhilippeauV Julliand

Abstract

This study aimed at assessing the impact of four barley forms on total tract apparent digestibility of dietary fibre in horses fed a large amount of starch in the morning meal (0.27% BW). Processed barley forms had a greater pre-caecal starch digestibility than the whole form. Based on this result, we hypothesised that using barley-processing methods would limit the potential dumping of undegraded starch in the hindgut of horses and, consequently, the potential negative effect on fibre degradation in the hindgut. In a 4×4 latin square design, four mature geldings fitted with a right ventral colon-fistula were fed a meadow hay : concentrate (62 : 38; dry matter (DM) basis) diet at 1.7% BW. The concentrate was made of 80% barley distributed either as whole grain or as processed forms: 2.5 mm ground, pelleted or steam-flaked. For each period, total tract apparent digestibilities of DM, NDF and ADF were determined over 3 consecutive days by total faecal collection, whereas pH, volatile fatty acids (VFA) concentrations and cultural functional bacteria counts (total anaerobic, cellulolytic bacteria, lactic acid producers, amylolytic bacteria and lactic acid utilisers) in colonic content were evaluated on 1 day 4 h after the morning m...Continue Reading

References

Aug 1, 1996·Journal of Dairy Science·P J Weimer
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Nov 18, 2008·Journal of Animal Physiology and Animal Nutrition·C BrøknerH H Hansen

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Citations

Nov 18, 2020·Animals : an Open Access Journal From MDPI·Sonia TassoneManuela Renna
Aug 28, 2021·Animals : an Open Access Journal From MDPI·Mónica GandarillasElisa María Gapp

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