Egg Quality Problems: Thin Shells, Small Eggs and Breakage

Every cracked or thin-shelled egg is income you've already paid to produce. Egg quality problems are almost always traceable to nutrition, management or bird age — which means they're fixable. Here are the three common ones and how to solve them.

1. Thin or soft shells

The most common cause is not enough calcium in the feed — hens need calcium daily to form shells. Other causes include young birds just starting to lay, heat stress, and disease.

• Feed a proper layer mash (ground-up feed mix) with adequate calcium (add limestone or oyster shell if shells are thin).
• Keep water available — a lack of water disrupts shell formation.
• Reduce heat stress (see heat stress in poultry).

2. Small eggs

• Young birds — young hens lay smaller eggs at first; size increases with age.
• Nutrition — insufficient protein or energy produces smaller eggs.
• Breed — some breeds lay smaller eggs than others.

Make sure the flock is on a balanced layer feed mix and give young birds time to mature.

3. Egg breakage

• Thin shells — fix the calcium first.
• Rough handling — collect eggs gently and at least twice a day.
• Poor nests — provide enough nests (one per four to five birds) with clean, dry bedding.
• Overcrowding — stressed birds break eggs.

For the broader production picture, see our egg production guide, track intake with the layers feed intake chart, and troubleshoot a drop in laying with why hens stop laying.