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A step-down protein program for commercial pullets.

C R Douglas, D M Welch, R H Harms

    Poultry Science
    |June 1, 1985
    PubMed
    Summary
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    Determining the optimal protein level for pullets is crucial for egg production. Studies show that while reduced protein diets can be used later in development, early protein deficits may impact growth, though it can be recovered.

    Area of Science:

    • Animal Science
    • Poultry Nutrition
    • Avian Physiology

    Background:

    • Pullet development is critical for subsequent egg production.
    • Protein requirements change throughout a pullet's growth cycle.
    • Optimizing nutrition minimizes production costs and maximizes efficiency.

    Purpose of the Study:

    • To determine the protein requirements for commercial egg production pullets (8-20 weeks).
    • To evaluate the impact of different protein levels on pullet growth and subsequent laying performance.
    • To identify optimal feeding strategies for pullets to ensure adequate body weight and production.

    Main Methods:

    • Three experiments utilized Hyline W-36 and Hisex White pullets.
    • Diets ranged from 14% to 18% protein from 8 to 20 weeks of age.

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  • Body weight and laying house performance were monitored.

    • Main Results:

    • A 14% protein diet did not support adequate body weight compared to 17% protein at 16 weeks.
    • Reduced protein diets (17% down to 12%) from 8-20 weeks yielded similar body weights and laying performance as an 18% constant diet.
    • Suboptimal protein from 8-12 or 8-14 weeks reduced body weight, but it was restored by feeding 14% protein for the remainder of the period.

    Conclusions:

    • Protein requirements can be adjusted during the pullet growing period without compromising performance.
    • Careful management of protein levels can optimize nutrition and potentially reduce feed costs.
    • Restoring adequate protein levels later in the growing period can mitigate early growth reductions.