Effects of astaxanthin on gut microbiota of polo ponies during deconditioning and reconditioning periods.

Autor: Kawaida MY; Department of Animal Science, University of Connecticut, Storrs, Connecticut, USA., Maas KR; Microbial Analysis, Resources, and Services, University of Connecticut, Storrs, Connecticut, USA., Moore TE; Statistical Consulting Services, Center for Open Research Resources and Equipment, University of Connecticut, Storrs, Connecticut, USA., Reiter AS; Department of Animal Science, University of Connecticut, Storrs, Connecticut, USA., Tillquist NM; Department of Animal Science, University of Connecticut, Storrs, Connecticut, USA., Reed SA; Department of Animal Science, University of Connecticut, Storrs, Connecticut, USA.
Jazyk: angličtina
Zdroj: Physiological reports [Physiol Rep] 2024 Jun; Vol. 12 (11), pp. e16051.
DOI: 10.14814/phy2.16051
Abstrakt: To determine the effects of astaxanthin (ASTX) supplementation on the equine gut microbiota during a deconditioning-reconditioning cycle, 12 polo ponies were assigned to a control (CON; n = 6) or supplemented (ASTX; 75 mg ASTX daily orally; n = 6) group. All horses underwent a 16-week deconditioning period, with no forced exercise, followed by a 16-week reconditioning program where physical activity gradually increased. Fecal samples were obtained at the beginning of the study (Baseline), after deconditioning (PostDecon), after reconditioning (PostRecon), and 16 weeks after the cessation of ASTX supplementation (Washout). Following DNA extraction from fecal samples, v4 of 16S was amplified and sequenced to determine operational taxonomic unit tables and α-diversity and β-diversity indices. The total number of observed species was greater at Baseline than PostDecon, PostRecon, and Washout (p ≤ 0.02). A main effect of ASTX (p = 0.01) and timepoint (p = 0.01) was observed on β-diversity, yet the variability of timepoint was greater (13%) than ASTX (6%), indicating a greater effect of timepoint than ASTX. Deconditioning and reconditioning periods affected the abundance of the Bacteroidetes and Fibrobacteres phyla. Physical activity and ASTX supplementation affect the equine gut microbiome, yet conditioning status may have a greater impact.
(© 2024 The Author(s). Physiological Reports published by Wiley Periodicals LLC on behalf of The Physiological Society and the American Physiological Society.)
Databáze: MEDLINE
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