Electrophoretic Plasma Protein Reference Intervals for Backyard Chickens From Northern Colorado

Area of Science:

• Veterinary Medicine
• Biochemistry

Background:

• The increasing prevalence of backyard chicken (Gallus gallus domesticus) flocks in urban and suburban US areas necessitates updated diagnostic tools.
• Plasma protein electrophoresis (PPE) is a standard diagnostic method, but specific reference intervals (RIs) for chickens in northern Colorado were lacking.

Purpose of the Study:

• To establish reference intervals (RIs) for plasma protein electrophoresis (PPE) in adult, non-molting backyard chicken flocks in northern Colorado.
• To provide essential data for accurate veterinary diagnostics in this growing population.

Main Methods:

• Collected plasma samples from 120 healthy adult chickens across 7 flocks in northern Colorado.
• Utilized agarose gel electrophoresis and a biuret total protein assay for protein fractionation.
• Generated RIs for PPE fractions and performed sex-based partitioning according to established guidelines.

Main Results:

• Established comprehensive RIs for all birds and after sex partitioning.
• Identified statistically significant differences (p < 0.05) between sexes for most electrophoretic fractions, supporting sex-based RIs.
• Provided specific RIs for albumin, alpha-1, alpha-2, beta-1, beta-2, gamma globulins, and the albumin:globulin ratio.

Conclusions:

• Successfully generated reference intervals for plasma protein electrophoresis in backyard chickens in northern Colorado.
• The availability of these RIs will enhance the diagnostic accuracy for avian health practitioners.
• Sex-specific RIs are recommended due to observed significant differences between hens and roosters.