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Electromagnetic Force-Driven Needle-Free in Ovo Injection Device.

Ko-Jung Huang1, Cheng-Han Li1, Ping-Kun Tsai1

  • 1Department of Bio-Industrial Mechatronics Engineering, National Chung Hsing University, Taichung 40227, Taiwan.

Veterinary Sciences
|March 24, 2022
PubMed
Summary

This study introduces a novel needle-free in ovo injection device for poultry, utilizing jet pressure to deliver vaccines or nutrients to embryonic eggs. The method demonstrated high hatching rates, offering a promising alternative to traditional needle injections.

Keywords:
embryonic eggin ovoinjection deviceneedle-free

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Area of Science:

  • Veterinary Medicine
  • Biomedical Engineering
  • Agricultural Science

Background:

  • Traditional needle injections are used for poultry vaccines and embryo injections.
  • Needle-free injection technology is primarily established for human and mammalian applications.
  • A gap exists in needle-free delivery systems for avian embryos.

Purpose of the Study:

  • To develop and evaluate a novel needle-free in ovo injection device for chicken embryos.
  • To determine optimal jet pressures for liquid delivery into embryonic egg compartments.
  • To assess the impact of needle-free injection on post-injection hatching rates.

Main Methods:

  • Development of an electromagnetic needle-free injection device using push-pull solenoids.
  • Investigation of jet pressures (~6-8 MPa) for delivering liquid to allantoic, amniotic, or air chamber muscle tissue.
  • Injection of saline into 18-day-old Lohmann and specific pathogen-free (SPF) embryonic eggs at ~7 MPa.

Main Results:

  • Successful liquid delivery to targeted embryonic compartments via the eggshell membrane.
  • Achieved high hatching rates: 98.3% for Lohmann breed and 85.7% for SPF eggs.
  • Identified suitable jet pressures for effective and safe in ovo delivery.

Conclusions:

  • The developed needle-free in ovo injection device is effective for avian embryos.
  • This technology shows potential for vaccine and nutrient delivery, improving poultry production.
  • The study provides a foundation for future automation and optimization of needle-free avian embryo injections.