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Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients
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Estimate the contribution of incubation parameters influence egg hatchability using multiple linear regression

Mohamed H Khalil1, Mostafa K Shebl1, Mohamed A Kosba1

  • 1Department of Poultry Production, Faculty of Agriculture, Aflaton St., El-Shatby, University of Alexandria, Alexandria, Egypt.

Veterinary World
|September 22, 2016
PubMed
Summary

Fertility is the most critical factor influencing chicken egg hatchability, contributing over 71%. Understanding these parameters can help improve hatchability rates in both indigenous and improved local chicken breeds.

Keywords:
chickenshatchabilitymultiple regressionpath coefficientprediction

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Area of Science:

  • Poultry Science
  • Animal Breeding

Background:

  • Hatchability is a key economic trait in poultry production.
  • Identifying factors affecting hatchability is crucial for optimizing chicken breeding programs.

Purpose of the Study:

  • To determine the most significant parameters influencing egg hatchability in local and improved chicken strains.
  • To assess the impact of fertility, embryonic mortality, egg characteristics, and egg weight loss on hatchability.

Main Methods:

  • Studied five parameters: fertility, early/late embryonic mortalities, shape index, egg weight, and egg weight loss.
  • Analyzed data from four chicken strains: Fayoumi, Alexandria, Matrouh, and Montazah.
  • Employed multiple linear regression analysis to identify key influencing factors.

Main Results:

  • Significant differences in hatchability were observed among the chicken strains, with Alexandria showing the highest commercial hatchability (80.70%).
  • Fertility was the most influential parameter, contributing 71.31% to hatchability.
  • Shape index and egg weight loss had the lowest contributions to hatchability.

Conclusions:

  • Fertility is the primary driver of hatchability in the studied chicken populations.
  • Multiple regression analysis provides a valuable tool for predicting and improving chicken egg hatchability.
  • Selective breeding focusing on fertility can enhance overall hatchability in local chicken breeds.