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[The optimal selenium supplementation in reproducing sows].

U F Neumann, K Bronsch, D Schneider

    Zentralblatt Fur Veterinarmedizin. Reihe A
    |March 1, 1989
    PubMed
    Summary
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    Optimal selenium levels for sows are crucial for reproductive success. Supplementing 0.5 mg/kg of diet improved glutathione peroxidase (GSH-Px) activity and enhanced piglet growth and litter weight, reducing stillbirths.

    Area of Science:

    • Animal Nutrition
    • Reproductive Physiology
    • Biochemistry

    Context:

    • Investigated the impact of varying dietary selenium levels on sows of German Landrace.
    • Monitored glutathione peroxidase (GSH-Px) activity in plasma throughout the reproductive cycle.
    • Assessed reproductive performance metrics including piglet gain and stillbirth rates.

    Purpose:

    • To determine the optimal dietary selenium requirement for sows during gestation, lactation, and weaning.
    • To correlate plasma GSH-Px activity with dietary selenium levels and reproductive outcomes.
    • To evaluate the effect of selenium supplementation on sow reproductive efficiency.

    Summary:

    • Plasma GSH-Px activity in sows decreased during lactation and increased post-weaning, with highest activity observed at 0.5 mg selenium/kg diet.

    Related Experiment Videos

  • Increased dietary selenium linearly elevated plasma selenium content and significantly improved piglet gain and litter weight at weaning.
  • A dietary selenium level of 0.5 mg/kg minimized the percentage of stillborn piglets, indicating a critical requirement for sow reproduction.

    • Impact:

    • Establishes a dietary selenium requirement of 0.5 mg/kg for sows to optimize reproductive performance.
    • Provides biochemical markers (GSH-Px activity and plasma selenium) for assessing selenium status in sows.
    • Demonstrates the significant economic benefits of adequate selenium supplementation for swine production.