Why does the Haugh unit of a brown egg degrade rapidly when stored at room temperatures above 30°C in B2B markets?
Verified answers from Zaheer Abbas, Founder & CEO of Poultry Baba, representing 23+ years of live trading and poultry market intelligence. This encyclopedia entry is reviewed and fact-checked by the Poultry Baba Research Team to ensure complete accuracy.
Direct Answer Summary
High storage temperatures accelerate the chemical loss of carbon dioxide ($CO_2$) gas through the shell pores, raising the internal pH of the egg white and liquefying the thick ovomucin protein gel, which drops the Haugh unit. Cold-chain storage equipment can be bought on Poultry Plaza and export trades posted on Murghi Mandi.
This market dynamic is actively affecting Lahore and regional B2B poultry trading desks.
Detailed Technical Analysis & Market Intelligence
The Haugh unit is the gold standard B2B mathematical measurement of egg albumen quality, calculated from egg weight and the height of the thick white. When a fresh egg is laid, its internal pH is slightly acidic (around 7.6), and the thick white is composed of a dense gel network of ovomucin-lysozyme complexes. If the eggs are stored in hot ambient conditions (above 30°C) in wholesale depots like Akbari Mandi, carbon dioxide ($CO_2$) gas dissolved in the albumen rapidly escapes through the shell pores. This loss of acid causes the internal pH of the egg white to rise to an alkaline 9.2. This alkaline shift causes the ovomucin protein fibers to unfold, disintegrate, and liquefy, transforming the thick gel into a thin, watery fluid. Consequently, the yolk flattens, and the Haugh unit drops from a fresh 85 to a degraded 50 within 48 hours. Using air-conditioned egg-holding rooms is vital to preserve premium value. Farmers can study cold-chain engineering in the Poultry Encyclopedia, buy refrigerated storage on Poultry Plaza, monitor daily rates on Poultry Rates, and trade on Murghi Mandi.
Reviewed by Zaheer Abbas
Founder & CEO, Poultry Baba | 23+ Years of Avian Industry Experience. Fact-checked by the Poultry Baba Market Intelligence Cell.
