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Related Experiment Videos

Virginiamycin and laying hen performance.

R D Miles, D M Janky, R H Harms

    Poultry Science
    |January 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Virginiamycin supplementation improved hen performance and egg production, particularly in lower-producing birds. However, this effect was not observed when diets included added fat.

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    Area of Science:

    • Animal Science
    • Poultry Nutrition
    • Avian Physiology

    Background:

    • Feed additives play a crucial role in optimizing poultry production.
    • Understanding the specific impacts of antibiotics like virginiamycin on laying hens is essential for efficient egg farming.
    • Dietary fat content can influence nutrient utilization and overall hen performance.

    Purpose of the Study:

    • To evaluate the effects of virginiamycin on the performance and egg characteristics of Hyline W-36 laying hens.
    • To determine if dietary supplementation with virginiamycin impacts hens fed a low-pigmentation diet.
    • To investigate the interaction between virginiamycin and added dietary fat on hen performance.

    Main Methods:

    • Two experiments were conducted over five 28-day periods using Hyline W-36 hens.

    Related Experiment Videos

  • Experiment 1 assessed virginiamycin supplementation in a low-pigmentation diet.
  • Experiment 2 evaluated virginiamycin (0, 10, 20 ppm) with 3% added fat.

    • Main Results:

    • Virginiamycin supplementation significantly increased egg production, body weight, and feed efficiency in Experiment 1 (P <= .05).
    • Analysis revealed that virginiamycin primarily benefited poorer-performing hens.
    • In Experiment 2, added fat improved feed efficiency, but virginiamycin did not elicit the same performance enhancements as seen in Experiment 1.

    Conclusions:

    • Virginiamycin can enhance laying hen performance, particularly for suboptimal producers, in diets with low pigmentation potential.
    • The beneficial effects of virginiamycin on hen performance may be diminished or absent when diets contain added fat.
    • Further research is warranted to elucidate the mechanisms behind virginiamycin's effects and its interactions with dietary components in poultry.