What is the impact of a high dietary calcium-to-phosphorus ratio on visceral gout in brown layer pullets?

Managing the dietary calcium-to-phosphorus ratio is a critical aspect of pullet rearing. During the grower phase (weeks 10 to 15), pullets require low calcium (under 1.0%) to prevent premature kidney calcification. If farmers mistakenly feed high-calcium layer feed (over 3.8% Ca) too early, the immature kidneys cannot excrete the massive calcium load. The excess calcium precipitates as calcium sodium urate crystals inside the ureters and on the surface of internal organs (heart, liver, air sacs), a condition known as visceral gout. This leads to kidney failure, severe dehydration, and high mortality rates in young flocks. Maintaining a precise grower ratio (approx. 2.0:1) is essential until the pre-lay phase. Farmers can read pullet pathology in the Poultry Encyclopedia, buy certified grower rations on Poultry Plaza, check feed material prices on Poultry Rates, and trade healthy pullets on Murghi Mandi.