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Related Experiment Videos

Suckling

E M Blass, M H Teicher

    Science (New York, N.Y.)
    |October 3, 1980
    PubMed
    Summary
    This summary is machine-generated.

    Suckling behavior in infant rats is initially triggered by maternal fluids. Appetite control develops around two weeks, influencing milk intake and nipple preference.

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    Area of Science:

    • Mammalian behavior
    • Neuroscience
    • Developmental biology

    Background:

    • Suckling is a universal mammalian behavior crucial for infant survival.
    • In rats, initial suckling is stimulated by amniotic fluid and infant saliva.
    • Early suckling lacks internal regulatory controls over milk intake.

    Purpose of the Study:

    • To investigate the developmental trajectory of suckling behavior in infant rats.
    • To identify the emergence of internal controls over milk consumption.
    • To compare rat suckling with other mammalian behaviors.

    Main Methods:

    • Observation of suckling behavior in newborn and developing albino rats.
    • Assessment of nipple preference between lactating and non-lactating nipples.

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  • Analysis of factors influencing milk intake, such as gastric distension and cholecystokinin.

    • Main Results:

    • Suckling is initially elicited by maternal and infant-deposited fluids.
    • Internal controls over milk intake emerge around two weeks of age.
    • Infant rats develop a preference for lactating nipples after two weeks of age.

    Conclusions:

    • Rat suckling behavior exhibits developmental changes in regulation and preference.
    • The development of suckling appetite control parallels general consummatory control.
    • These findings highlight both unique and shared aspects of mammalian suckling.