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Related Experiment Videos

Effect of eggshell temperature during incubation on embryo development, hatchability, and posthatch development.

A Lourens1, H van den Brand, R Meijerhof

  • 1Applied Research of the Animal Sciences Group of Wageningen University and Research Centre, PO Box 65, 8200 AB Lelystad, The Netherlands. sander.lourens@wur.nl

Poultry Science
|June 24, 2005
PubMed
Summary

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Optimal eggshell temperature (EST) during incubation is crucial for embryo development and hatchability. Maintaining a constant 37.8°C EST improves chick rectal temperature regulation, especially under varying posthatch housing conditions.

Area of Science:

  • Animal Science
  • Poultry Science
  • Embryology

Background:

  • Eggshell temperature (EST) during incubation significantly influences embryonic development and posthatch performance.
  • Understanding the impact of varying EST profiles is essential for optimizing poultry production.
  • Batch-specific environmental requirements highlight the complexity of incubation management.

Purpose of the Study:

  • To investigate the effects of different eggshell temperature (EST) profiles on embryo mortality, hatchability, and development.
  • To assess the impact of incubation EST on posthatch growth and rectal temperature regulation in chicks under different housing conditions.
  • To determine if batch-specific environmental conditions are necessary for optimal outcomes.

Main Methods:

  • Eggs were incubated under varied EST profiles: 36.7°C or 37.8°C (wk 1), 37.8°C (wk 2), and 37.8°C or 38.9°C (wk 3).

Related Experiment Videos

  • Posthatch chicks were reared under either high (35°C to 30°C) or low (30°C to 25°C) housing temperatures.
  • Rectal temperature and growth parameters were monitored, and the difference between machine and EST (DT) was analyzed.

    • Main Results:

    • Lower EST (36.7°C) in wk 1 retarded embryo development but resulted in lower posthatch rectal temperatures, particularly under low housing temperatures.
    • Highest hatchability and embryo development were achieved with a constant 37.8°C EST throughout incubation.
    • Chicks from a constant 37.8°C EST showed the highest rectal temperatures, indicating better thermoregulation.

    Conclusions:

    • A constant 37.8°C EST throughout incubation promotes optimal hatchability, embryo development, and posthatch thermoregulation.
    • Incubation and rearing temperatures interact to affect chick rectal temperature maintenance during the first week posthatch.
    • Different egg batches may require tailored incubation and environmental conditions for maximizing poultry production efficiency.