Measurement of vital sign in chick embryo using multi-channel diffuse speckle contrast analysis

Area of Science:

• Veterinary Science
• Biomedical Engineering
• Optical Imaging

Background:

• Determining chick embryo viability during artificial incubation is crucial for economic efficiency in avian breeding.
• Noninvasive methods are needed to assess embryo health without compromising development.
• Current methods may lack the precision or accessibility required for early-stage monitoring.

Purpose of the Study:

• To develop and validate a novel noninvasive system for assessing chick embryo viability.
• To enable in-vivo measurement of deep tissue blood flow in early-stage embryos.
• To provide a simple, low-cost, and flexible solution for monitoring avian embryo health.

Main Methods:

• Development of a multi-channel diffuse speckle contrast analysis (DSCA) system.
• Integration of four optical fiber detectors for in-vivo measurements.
• Application of the DSCA system to monitor chick embryos during artificial incubation.

Main Results:

• The DSCA system successfully confirmed vital signs of chick embryos in the early incubation stages.
• The system demonstrated the ability to measure relative blood flow index changes noninvasively.
• Depth information related to blood flow was obtained with the developed system.

Conclusions:

• The multi-channel DSCA system offers a promising noninvasive tool for assessing chick embryo viability.
• This technology can aid in reducing financial losses in the poultry industry by enabling early detection of non-viable embryos.
• The system's simplicity, low cost, and flexibility make it suitable for practical application in avian breeding programs.