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Related Experiment Videos

Body surface area, a reference for space allowance in confinement.

J F Hurnik1, N J Lewis

  • 1Department of Animal and Poultry Science, University of Guelph, Ontario, Canada.

Poultry Science
|February 1, 1991
PubMed
Summary

Poultry welfare is improved by ensuring adequate space. This study proposes using body surface area, calculated from body weight, to determine minimum space requirements for poultry, recommending 50% of body surface area.

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Area of Science:

  • Animal Welfare Science
  • Poultry Husbandry
  • Agricultural Engineering

Background:

  • Confinement in poultry production raises significant welfare concerns due to physical and social restrictions.
  • Determining appropriate space allowances is crucial for mitigating these welfare issues.

Purpose of the Study:

  • To establish a scientifically-based method for calculating minimum space allowances for poultry.
  • To propose a practical and continuous estimation of space requirements based on bird growth.

Main Methods:

  • Utilized bird's body surface area as the primary reference for space allowance determination.
  • Developed a formula for surface area calculation based on body weight, a readily measurable parameter.
  • Proposed a method to estimate floor space allowance directly from body surface area.

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Main Results:

  • Body surface area changes proportionally with weight gain, offering a continuous estimate of space needs.
  • The proposed method allows for easy visualization and estimation of space requirements without complex measurements.
  • A minimum space allowance equivalent to 50% of the bird's body surface area is recommended.

Conclusions:

  • Body surface area, derived from body weight, provides a reliable and continuous metric for poultry space requirements.
  • The 50% body surface area recommendation ensures birds can rest without physical contact.
  • This approach offers a practical solution for optimizing poultry welfare in production settings.