Effect of stomach loading on sucking behavior in neonatal puppies


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Abstract

To determine whether the amount of milk in the stomach of a neonatal puppy has any effect on sucking behavior, 2 groups of 15 puppies each were matched for age, litter, weight, and sex and deprived from their mothers for 7½-9½ hr. when they were 1, 2, 3, 4, 5, or 11 days old. At the end of the deprivation period one group was stomach loaded with simulated bitch's milk, and pairs of Ss were placed with the dam and allowed to suck for 30 min. The unloaded Ss sucked for a statistically significantly longer time and gained statistically significantly more weight than their loaded partners. Inhibition of sucking by stomach fullness is present from the day of birth and does not depend on postnatal maturation. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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