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Related Experiment Videos

Molting layers--alternative methods and their effectiveness.

K W Koelkebeck1, K E Anderson

  • 1Department of Animal Sciences, University of Illinois, Urbana 61801, USA. kkoelkeb@uiuc.edu

Poultry Science
|May 15, 2007
PubMed
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Alternative molting methods for commercial layers using special diets are as effective as fasting. These non-feed withdrawal techniques support hen welfare and production performance, offering a humane alternative to traditional practices.

Area of Science:

  • Animal Science
  • Poultry Science
  • Animal Welfare Science

Background:

  • Traditional feed withdrawal molting practices for commercial layers face scrutiny due to animal welfare concerns.
  • There is a recognized need for practical, non-fasting alternatives to induce molting in laying hens.
  • Research institutions have investigated alternative molting strategies to improve hen well-being.

Purpose of the Study:

  • To evaluate the efficacy of non-feed withdrawal molting methods compared to traditional fasting.
  • To assess the impact of alternative molting diets on postmolt production performance.
  • To analyze behavioral patterns of laying hens during molting as indicators of welfare.

Main Methods:

  • Compared traditional fasting (5–13 days) with low-energy/protein diets (wheat middlings, soybean hulls, corn) or diets with graded salt levels.

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  • Full-feeding of alternative diets was implemented throughout the 28-day molt period.
  • Evaluated behavioral repertoires including feeding, drinking, social, and anti-predator behaviors, alongside aggression and submission.

    • Main Results:

    • Postmolt production performance using non-feed withdrawal techniques was comparable to the fasting method.
    • Behavioral patterns during molting were consistent with physiological changes and did not compromise hen welfare.
    • Appetitive behaviors were influenced by production phase and molting, but not strain; aggressive/submissive acts were unaffected by strain or production phase.

    Conclusions:

    • Alternative non-feed withdrawal molting methods provide comparable laying hen well-being.
    • These methods may enhance the transition from a productive to a resting state for hens.
    • Non-feed withdrawal molting strategies offer a viable and humane alternative to fasting in commercial poultry production.