Reference parameters of peripheral immune cell populations in broiler chickens using a large database

Area of Science:

• Avian immunology
• Veterinary immunology
• Flow cytometry applications

Background:

• Flow cytometry is standard for broiler immune evaluation in avian research.
• Establishing reference values for immune parameters in healthy broilers is currently lacking.
• This gap hinders accurate interpretation of immune status in broiler flocks.

Purpose of the Study:

• To determine confidence intervals for circulating immune cell subsets in healthy broilers.
• To provide essential reference values for avian immunology.
• To aid in distinguishing healthy from diseased broiler populations.

Main Methods:

• Analysis of peripheral blood from over 1,000 healthy commercial broilers.
• Utilized flow cytometry for immune cell subset quantification.
• Compared data against broilers challenged with salmonellosis or mycotoxins.

Main Results:

• Established confidence intervals for multiple peripheral blood immune cell subsets in broilers.
• Demonstrated the utility of specific immune cells in differentiating healthy from challenged birds.
• Validated the data by comparing healthy controls with challenged groups.

Conclusions:

• Initiated the creation of reference values for cellular immune parameters in broilers.
• Provided a valuable dataset for the avian immunology community.
• Facilitated improved diagnostics and research by offering baseline immune data.