What your hens eat shows up in every egg they lay. Feed quality decides how thick the shell is, how deep the yolk color runs, how firm the white stands and how big the egg comes out. Below, we break down which nutrients drive each part of egg quality, how common feed forms compare, and how to read the warning signs when something in the diet is off.
How Feed Quality Shapes Egg Quality
Each part of the egg depends on a different set of nutrients, so a gap in the diet usually shows up in one specific place first.
Shell Strength
Calcium is the raw material of the shell, and a laying hen needs far more of it than a non-laying bird. Without enough, shells come out thin and crack in the nest box. Calcium also supports muscle and nerve function and hatchability. Layer feed plus free-choice crushed oyster shell or limestone keeps the supply steady.
Yolk Color
Yolk color comes from pigments called xanthophylls, a type of carotenoid found in greens, alfalfa, corn and marigold. Hens can't make these pigments themselves, so a pale yolk usually means a pale diet. Pasture time or a handful of leafy greens deepens the color.
Egg Whites
A firm white that holds its shape depends on adequate protein and a balance of amino acids. Thin, runny whites can point to a protein shortfall, though egg age, heat and hen age also play a part.
Egg Size
Three nutrients do most of the work on egg size:
- Protein: Protein intake has a bigger effect on egg weight than energy intake. Hens fed more protein at the start of lay reach full egg size faster.
- Methionine: This amino acid is usually the first one to run short in a layer diet. When it does, eggs get smaller and production drops with them.
- Linoleic acid: This essential fatty acid, found in corn and soybean oil, supports yolk formation. Added fat can raise egg size early in lay.
Hen age matters just as much. Pullets lay small eggs that grow larger over the first months of lay, and size keeps creeping up as hens get older. The catch is that a hen puts roughly the same amount of shell on each egg, so bigger eggs from older hens tend to have thinner shells. Yolk size, which is tied to the hen's body weight, sets the overall size of the egg. Alberta Agriculture's layer nutrition guide covers these factors in more detail (source).
Comparing Feed Forms and Formulations
For laying hens, a complete layer formula matters more than the form it comes in, but the form changes how much your hens actually eat versus waste.
Feed Forms
|
Form |
What it is |
Pros |
Cons |
Best for |
|---|---|---|---|---|
|
Mash |
Loose, finely ground feed |
Least processed; easy to wet into a porridge |
Hens pick out favorite bits; most waste |
Small flocks, wet-mash feeding |
|
Crumble |
Pellets broken into small pieces |
Every bite is nutritionally complete; less sorting |
Some dust and waste |
Chicks, pullets, mixed-age flocks |
|
Pellet |
Compressed cylinders |
Least waste; every bite balanced |
Some hens take time to accept them |
Adult laying flocks |
Feed Formulations
Typical ranges are shown below; check your feed tag for exact numbers.
|
Formulation |
Typical protein |
Calcium |
Egg quality impact |
When to use |
|---|---|---|---|---|
|
Starter / grower |
18–20% |
About 1% |
Too little calcium for strong shells |
Chicks to about 16–18 weeks |
|
Layer |
About 16% |
3.5–4.5% |
Built for shell strength and steady egg size |
Hens in lay, from first egg on |
|
All-flock |
18–20% |
About 1% |
Thin shells unless oyster shell is offered on the side |
Mixed flocks with roosters, ducks or non-layers |
|
Organic layer |
About 16% |
3.5–4.5% |
Same targets from certified organic, non-GMO ingredients |
Owners who want organic eggs |
Whatever the formula, complete feed should make up about 90% of what your hens eat. Treats and scraps above 10% dilute the protein and calcium they depend on.
Signs of Poor Feed Quality (and How to Fix Them)
Most diet problems show up in the eggs before they show up in the hen. Match what you see to the likely cause and fix below.
|
Symptom |
Likely cause |
Fix |
|---|---|---|
|
Thin or easily cracked shells |
Not enough calcium |
Switch to a complete layer feed and offer crushed oyster shell free choice |
|
Pale yolks |
Low xanthophylls (carotenoids) |
Add leafy greens, alfalfa or pasture time |
|
Watery, runny whites |
Protein shortfall or amino acid imbalance |
Feed a complete layer ration and cut treats to 10% of the diet; collect eggs daily and refrigerate |
|
Small eggs from mature hens |
Low protein or methionine |
Check the feed tag for about 16% protein; avoid stretching feed with grain or scraps |
|
Fewer eggs than usual |
Missing nutrients, too many treats or short daylight |
Return to complete feed; if it's fall or winter, consider supplemental light |
|
Dull feathers, low energy, frequent illness |
Broad nutrient deficiency weakening the immune system |
Move to a fresh, complete feed; call a vet if symptoms continue |
Small first eggs from young pullets are normal and not a feed problem. Size picks up over the first few months of lay.
Why Feed Quality Matters
When nutrients run short, a hen's body puts survival ahead of egg-making, so shell, yolk and size are the first things to slip. Over time, a weak diet also lowers her resistance to disease. A balanced premium feed costs more per bag, but stronger shells mean fewer cracked eggs and healthier hens mean fewer lost layers, which usually covers the difference.
Getting Your Hens to Lay Consistently
Good feed is only part of steady laying. Hens also need a quiet, hidden nesting spot and around 14–16 hours of light a day, which may mean supplemental lighting in winter. For the full picture, see our guide to when chickens start laying eggs.
Feed for Better Eggs
Strong shells, rich yolks and full-size eggs start with a complete, balanced layer feed. Nature's Best Organic Feeds offers organic, non-medicated, Non-GMO Project Verified layer feed made to give your hens the protein and calcium they need. Use our store locator to find your nearest Tractor Supply.
