Effect of a feed/fast protocol on pH in the proximal equine stomach

Equine Veterinary Journal
L HustedS N Olsen

Abstract

Risk factors for the development of gastric squamous ulcers include various management procedures, such as intermittent feed deprivation that can occur during weight management regimens or stall and dry lot confinement. To investigate the effect of intermittent feed deprivation relative to continuous feed intake on proximal intragastric pH, specifically in the region of the squamous mucosa of the lesser curvature. In 6 horses, pH electrodes were placed just inside of the oesophageal sphincter in the stomach for each of two 72 h protocols (A and B) in a randomised, cross-over design. Protocol A consisted of 12 h fed, 12 h fasted, 24 h fed and 24 h fasted, in sequence. Protocol B consisted of 72 h fed. During the fed periods of each protocol, horses had ad libitum access to coastal Bermuda hay and were fed sweet feed (1 kg, b.i.d.). Horses had ad libitum access to water at all times. Proximal intragastric pH was significantly lower during protocol A, than during protocol B. However, hourly mean pH was significantly different only during the day and evening hours between protocols. During protocol B, mean proximal pH decreased significantly from 03.00 to 09.00 compared to 19.00 to 23.00 h. A moderate positive correlation of hay in...Continue Reading

References

Jul 1, 1986·Equine Veterinary Journal·C J HammondK L Watkins
Dec 1, 1994·Digestive Diseases and Sciences·M J Murray
Jul 15, 2000·American Journal of Veterinary Research·J A NadeauA M Saxton
Nov 14, 2002·American Journal of Veterinary Research·Mireia Lorenzo-Figueras, Alfred M Merritt

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Citations

Aug 12, 2014·The Veterinary Record·David Sutton
Jul 28, 2016·Journal of Veterinary Internal Medicine·J MönkiA-M K Virtala
Dec 30, 2016·Journal of Veterinary Internal Medicine·S J ViitanenM M Rajamäki
Dec 1, 2018·Journal of Veterinary Internal Medicine·Benjamin W SykesGayle D Hallowell
Nov 18, 2017·Journal of Veterinary Pharmacology and Therapeutics·S K PedersenH E Banse
Dec 20, 2020·Journal of Veterinary Internal Medicine·Jessica C WiseSharanne L Raidal
Aug 22, 2021·Journal of Equine Veterinary Science·Ana BerretaClaire R Burbick

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