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Related Experiment Video

Updated: Jul 12, 2026

Palatable Western-style Cafeteria Diet as a Reliable Method for Modeling Diet-induced Obesity in Rodents
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Palatable Western-style Cafeteria Diet as a Reliable Method for Modeling Diet-induced Obesity in Rodents

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Growth of Rats Fed on Opaque-2 Maize.

E T Mertz, O A Veron, L S Bates

    Science (New York, N.Y.)
    |June 25, 1965
    PubMed
    Summary

    Opaque-2 maize significantly enhances rat weight gain compared to standard maize. This study confirms opaque-2 maize offers superior protein quality for animal nutrition.

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    The Plant cell·1992

    Area of Science:

    • Agricultural Science
    • Animal Nutrition
    • Biochemistry

    Background:

    • Maize is a staple food and animal feed globally.
    • The opaque-2 genetic mutation in maize affects kernel composition.
    • Previous studies suggested improved nutritional value of opaque-2 maize.

    Purpose of the Study:

    • To evaluate the nutritional quality of opaque-2 maize.
    • To compare weight gain in rats fed opaque-2 maize versus standard maize.
    • To confirm the superior protein quality of opaque-2 endosperm.

    Main Methods:

    • Feeding trials with weanling male rats.
    • Diet composition: 90% opaque-2 maize or standard hybrid maize.
    • Duration: 28 days.

    Main Results:

    • Rats fed opaque-2 maize gained an average of 97 grams.
    • Control rats fed standard maize gained an average of 27 grams.
    • Significant difference in weight gain observed.

    Conclusions:

    • Opaque-2 maize demonstrates significantly higher nutritional value.
    • The protein content in opaque-2 maize endosperm is of superior quality.
    • Results support the use of opaque-2 maize in animal diets.

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