Transition to layer feed at the right time to support laying

Switch pullets from grower feed (16–18% protein) to layer feed (16% protein with 3.5–4.5% calcium) at 18 weeks or when the first egg appears, whichever comes first. Proper nutrition during the 14–20 week growth period is critical — underfed or malnourished pullets delay laying and may never reach their breed's full production potential.

Why It Works

The reproductive system develops rapidly between 14 and 20 weeks, and adequate protein, calcium, and phosphorus are essential for that development. Layer feed provides the elevated calcium needed for eggshell formation that grower feed does not. However, switching too early (before 16 weeks) can damage developing kidneys because immature birds cannot process the high calcium load.

Tips

• If your flock has mixed-age birds, feed an all-flock feed (16–18% protein, low calcium) and offer oyster shell separately for layers
• Ensure pullets always have access to fresh water — dehydration delays maturity
• Avoid restricting feed during the growth phase; pullets should eat as much as they want
• A pullet that is underweight at 18 weeks will likely start laying late — body weight matters more than age