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A Methodology to Quantify Resilience in Growing Pigs.

Houda Laghouaouta1, Ramona N Pena1, Roger Ros-Freixedes1

  • 1Agrotecnio-CERCA Center, Department of Animal Science, University of Lleida, 25198 Lleida, Spain.

Animals : an Open Access Journal From MDPI
|October 23, 2021
PubMed
Summary

New indicators for pig resilience, deviation from expected body weight (ΔBW) and haptoglobin increase (ΔHP), show moderate heritability. These measures can be used in selective breeding programs to improve pig resilience.

Keywords:
body weighthaptoglobinpigsresilience indicatorsvaccine challenge

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Area of Science:

  • Animal Science
  • Genetics
  • Immunology

Background:

  • Growing concern exists regarding the genetic basis of resilience in livestock and its application in breeding.
  • Identifying reliable indicators of resilience is crucial for improving animal health and productivity.

Purpose of the Study:

  • To develop and validate novel indicators of resilience in growing pigs.
  • To assess the genetic parameters of these novel indicators for potential use in breeding programs.

Main Methods:

  • 445 pigs were vaccinated with an Aujeszky vaccine.
  • Resilience indicators were based on deviation from expected body weight (ΔBW) and haptoglobin increase (ΔHP) post-vaccination.
  • Heritability estimates for ΔBW and ΔHP were calculated.

Main Results:

  • ΔBW and ΔHP were proposed as novel resilience indicators.
  • High concordance was observed between classification methods for ΔBW and ΔHP.
  • Moderate heritability was estimated for ΔBW (0.33) and low-to-moderate for ΔHP (0.16).

Conclusions:

  • ΔBW and ΔHP are effective, measurable, and genetically controlled indicators of pig resilience.
  • These indicators can be utilized in selective breeding to enhance resilience in pig populations.
  • Further research is recommended to validate these findings in broader contexts.