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Related Experiment Videos

Nutrition and sow prolificacy.

F X Aherne, R N Kirkwood

    Journal of Reproduction and Fertility. Supplement
    |January 1, 1985
    PubMed
    Summary

    Optimal gilt nutrition involves ad libitum feeding until mating for enhanced prolificacy. Sow feeding during lactation significantly impacts post-weaning performance and remating intervals, while pregnancy feeding has minimal effect on litter size.

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    Area of Science:

    • Animal Science
    • Reproductive Biology
    • Swine Nutrition

    Background:

    • Prolificacy, defined as viable piglets per year, depends on multiple reproductive factors.
    • Sow nutrition and body condition are critical for reproductive success throughout their lifecycle.

    Purpose of the Study:

    • To evaluate the influence of nutrition on gilt and sow prolificacy.
    • To determine optimal feeding strategies for maximizing reproductive performance in swine.

    Main Methods:

    • Literature review and synthesis of existing research on swine reproductive physiology and nutrition.
    • Analysis of feeding strategies for gilts pre-mating, sows during pregnancy, lactation, and post-weaning.

    Main Results:

    • Gilt prolificacy is minimally affected by nutrition under normal conditions; ad libitum feeding pre-mating is recommended for optimal puberty and ovulation.
    • Sow body condition management is key; controlled weight gain in pregnancy and restricted feeding during lactation are advised.
    • Lactation feed intake significantly affects post-weaning interval and embryo survival; high-level feeding post-weaning offers limited benefits.

    Conclusions:

    • Nutrition plays a crucial role in optimizing reproductive efficiency in swine, particularly concerning lactation and post-weaning phases.
    • Strategic feeding adjustments for gilts and sows can enhance prolificacy and long-term performance, minimizing negative impacts of poor body condition.

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