sham feeding


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sham feed·ing

a procedure used in the study of the psychic phase of gastric secretion: in experiments on dogs, the food, after being eaten, does not enter the stomach but issues from an esophageal fistula made in the neck; the chewing and swallowing of food causes an abundant secretion of gastric juice.
Synonym(s): fictitious feeding

sham feeding

A method for assessing completeness of vagotomy; food is smelled, seen and chewed, but not swallowed. See Maximum acid output, Vagotomy.

sham feeding

intake of food by an animal with a surgically created esophageal fistula that prevents the ingested food from reaching the stomach. Used in studies of physiological and psychological mechanisms of hunger and feeding behavior.
References in periodicals archive ?
Thus using the esophageal cannula for collecting the boluses plays an important role in keeping the rumen contents unchanged during sham feeding conditions.
In the present study, under both normal feeding conditions and sham feeding conditions hematocrit and plasma total protein concentrations increased with dry forage feeding (Tables 1 and 3).
Experiment 2--The effect of intraruminal infusion of hypertonic solution and insertion of a balloon on dry forage intake during sham feeding
Under sham feeding conditions whereby feed boluses are removed before entering the rumen during dry forage feeding, increase in ruminal fluid osmolality, decrease in ruminal fluid pH, and increase in plasma osmolality that occur under normal feeding conditions when feed enters the rumen were not observed (Figure 3 and Table 4; Thang et al.
The volume of artificial parotid saliva that was replenished in the rumen was approximately equal to the total volume of secreted saliva recorded during the 2 h feeding period under sham feeding conditions (Thang et al.
However, in the RIHS-IB treatment, there were only two factors (ruminal distension and increased plasma osmolality) involved in the suppression of dry forage intake under sham feeding conditions.
Experiment 1--The effect of intraruminal infusion of hypertonic solution on dry forage intake in large-type goats during sham feeding : The eight esophageal- and ruminal-fistulated goats were split into two groups (group A: four animals; group B: four animals).
Experiment 2--The effect of intraruminal infusion of hypertonic solution and intravenous infusion of artificial mixed saliva on dry forage intake in large-type goats during sham feeding : Similar to experiment 1, the animals were divided into two groups (A and B).
2010) reported that in the large-type goats under sham feeding conditions in which esophageal boluses were removed via an esophageal fistula before entering the rumen, circulating plasma volume decreased with dry forage feeding but there were no changes in plasma osmolality during feeding.
Experiment 2 : The effect of intraruminal replenishment of iso-osmotic artificial saliva and insertion of a balloon on dry forage intake in large-type goats during sham feeding : Similar to in the experiment 1, the animals were split into two groups.
Experiment 1: The effect of intraruminal insertion of a balloon on dry forage intake in large-type goats during sham feeding
Experiment 2: The effect of intraruminal replenishment of iso-osmotic artificial saliva and insertion of a balloon on dry forage intake in large-type goats during sham feeding