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Effects of transport and feeding strategies before transportation on redox homeostasis and gastric ulceration in horses
Journal article   Open access   Peer reviewed

Effects of transport and feeding strategies before transportation on redox homeostasis and gastric ulceration in horses

Yashar Gharehaghajlou, Sharanne L. Raidal, Francesca Freccero and Barbara Padalino
Journal of equine veterinary science, Vol.126, pp.1-6
01/07/2023
DOI: https://doi.org/10.1016/j.jevs.2023.104268
PMID: 36871793
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Published (Version of record)CC BY V4.0,  Open Access
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Published (Version of record)CC BY V4.0,  Open

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Abstract

Life Sciences & Biomedicine Science & Technology Veterinary Sciences
Transportation may lead to oxidative stress (OS) and gastric ulceration in horses, and optimal feed man-agement before, or during, transportation is unclear. This study aimed to evaluate the effects of trans-portation after three different feeding strategies on OS and to explore possible associations between OS and equine gastric ulcer syndrome (EGUS). Twenty-six mares were transported by truck for 12 hours without food or water. Horses were randomly divided into 3 groups; (1) fed 1 hour before departure (BD), (2) fed 6 hours BD, (3) fed 12 hours BD. Clinical examinations and blood collections were per-formed at approximately 4 hours BD (T0), at unloading (T1), 8 hours (T2) and 60 hours (T3) after un-loading. Gastroscopy was conducted prior to departure, and at T1 and T3. Although OS parameters re-mained in the normal range, transportation was associated with increased reactive oxygen metabolites (ROMS) at unloading (P = 0.004), with differences between horses fed 1 hour and 12 hours BD ( P < .05). The level of total antioxidant (PTAS) was affected by both transportation and feeding strategy ( P = 0.019), with horses fed 1 hour BD demonstrating greater PTAS at T = 0, and a different response in comparison with the other groups and the literature. Nine horses demonstrated clinically significant ulceration of the squamous mucosa at T1 but, although weak correlations were evident between OS parameters and ulcer scores, univariate logistic regression showed no associations. This study suggests that feed management prior to a long journey (12 hours) may affect oxidative balance. Further studies are needed to understand the nexus between feed management before and during transport, transport-related OS and EGUS.

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