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Related Experiment Videos

Accelerating embryonic growth during incubation following prolonged egg storage. 1. Embryonic livability.

V L Christensen1, J L Grimes, M J Wineland

  • 1Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, North Carolina 27695-7608, USA. vern_christensen@ncsu.edu

Poultry Science
|January 14, 2004
PubMed
Summary

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Long-stored turkey eggs benefit from higher incubation temperatures. Increased heat for the first 1-2 weeks improves embryonic survival and poult quality, compensating for delayed growth and metabolism in stored eggs.

Area of Science:

  • Poultry Science
  • Embryology
  • Animal Reproduction

Background:

  • Long-term storage of turkey eggs (15 days) can negatively impact embryonic development, leading to reduced hatchability.
  • Shorter storage periods (3 days) are typically associated with better embryonic survival and poult quality.

Purpose of the Study:

  • To investigate if increased incubation temperatures can improve embryonic survival and hatchling quality in long-stored turkey eggs.
  • To determine the optimal duration of elevated incubation temperature exposure for compensating delayed embryonic development.

Main Methods:

  • A 2x2 factorial experiment was designed with two storage durations (3 vs. 15 days) and two incubation temperature treatments.
  • Experiment 1: Elevated temperature (37.8°C) for the first 2 weeks of incubation.

Related Experiment Videos

  • Experiment 2: Elevated temperature (37.8°C) for the first week of incubation, compared to controls (37.5°C).

    • Main Results:

    • Elevated incubation temperatures for the initial 1 or 2 weeks successfully compensated for the negative effects of 15-day egg storage.
    • Improved embryonic livability and hatchability were observed in treatment groups exposed to higher temperatures.
    • Tissue analysis confirmed treatment effects on embryonic growth and metabolism.

    Conclusions:

    • Increased incubation temperatures during the early stages can effectively mitigate the detrimental effects of prolonged egg storage on turkey embryos.
    • This strategy enhances embryonic survival and poult quality, offering a practical solution for hatcheries dealing with long-stored eggs.