Stomach distention as a regulation of fluid intake

Engstrom, Robert; Deaux, Edward

doi:10.3758/bf03333034

Cited by 9 publications

(3 citation statements)

References 7 publications

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“…This suggested that composition of the rehydration solution was not an important factor in determining initial fluid intake. Because the volumes drunk were similar to the reported capacity of the equine stomach (Pfeiffer and MacPherson 1990), satiation or cessation of drinking was probably a consequence of gastric filling, as described in rats (Engstrom and Deaux 1974). This suggestion is supported by the observation that the majority of initial drinking also occurred within the first minute after rehydration fluid was offered.…”

Section: Discussionsupporting

confidence: 59%

Drinking salt water enhances rehydration in horses dehydrated by frusemide administration and endurance exercise

Butudom

Schott

Davis

et al. 2002

Equine Veterinary Journal

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SummaryBecause the primary stimulus for thirst is an increase in plasma tonicity, we hypothesised that dehydrated horses would drink a greater total volume of fluid voluntarily during the first hour of recovery when they were initially offered salt water. To test this hypothesis, bodyweight (bwt), fluid intake (FI) and [Na + ] were measured in 6 Arabian horses offered 3 rehydration solutions. After dehydration was induced by frusemide administration (1 mg/kg bwt, i.v.) followed by 45 km treadmill exercise, water (W), 0.45% NaCl and 0.9% NaCl were offered, in a randomised order, during the initial 5 min after completing exercise. Horses were subsequently placed in a stall and further intake of plain water during the first hour of recovery was measured. By the end of exercise, horses lost 5.2 ± 0.2, 5.6 ± 0.3 and 5.7 ± 0.2% (P>0.05) bwt and FI during the first 5 min of recovery was 10.5 ± 0.7, 11.6 ± 0.8 and 11.6 ± 1.5 l (P>0.05) for W, 0.45% NaCl and 0.9% NaCl, respectively. After 20 min of recovery, [Na + ] had decreased with W but remained unchanged from the end exercise values for both saline solutions. During the initial hour of recovery, further water intake was 0.9 ± 0.4, 5.0 ± 0.5 and 6.9 ± 0.7 l (P<0.05) for W, 0.45% NaCl and 0.9% NaCl, respectively. Therefore, total FI was 11.4 ± 0.5, 16.6 ± 0.7 and 18.5 ± 1.7 l (P<0.05) for W, 0.45% NaCl and 0.9% NaCl, respectively, and persisting bwt loss after 60 min of recovery was greater (P<0.05) for W (3.5%) than for the 2 saline solutions (2.4% for 0.45% NaCl and 1.9% for 0.9% NaCl). In conclusion, providing salt water as the initial rehydration fluid maintained an elevated [Na + ] and resulted in greater total FI and recovery of bwt loss during the first hour of recovery, in comparison to offering only plain water.

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Section: Discussionsupporting

confidence: 59%

Drinking salt water enhances rehydration in horses dehydrated by frusemide administration and endurance exercise

Butudom

Schott

Davis

et al. 2002

Equine Veterinary Journal

View full text Add to dashboard Cite

show abstract

“…The data appear in keeping with earlier postulations of a satiety mechanism separate from a correctional mechanism in thirst (O'Kelly, 1963), and consistent with the notion that gastric distention may constitute an important cuto()ff cue in the 23Yz-h water-<ieprivation schedule (Engstrom & Deaux, 1974;O'Kelly et aI., 1958).…”

Section: Discussionsupporting

confidence: 74%

“…If these micro behavioral changes in drinking reflect satiation, a possible contributing factor may well be gastric distention (Engstrom & Deaux, 1974;O'Kelly, 1954). In order to explore this possibility, the present study was designed to observe such microbehavior after preloads equal in volume, but differing in their capacity to quench thirst.…”

mentioning

confidence: 99%