16% layer pellets + oyster shell beat every other backyard feed
Most beginner-flock feed problems are bag problems, not bird problems. Buy a 16–18% protein layer pellet and put crushed oyster shell in a separate dish next to it — that's the whole ration. Skip all-flock, skip the organic-premium aisle, skip scratch-as-the-main-feed, skip DIY whole-grain blends until you've kept hens for two years. Brand is preference; whatever the local store stocks fresh (Purina Layena, Nutrena Country Feeds, Kalmbach, the feed mill's house blend) is the right answer.
The 16–18% crude-protein figure for a layer ration is published Cooperative Extension Service guidance12. Where this page makes a call extension publications don't is the format ranking (pellets first, mash last) and the named losers in the “what to skip” section — those are HatchMath positions, grounded in waste rates, shelf-life, and the lay-rate effect of under-protein rations rather than in a single sourced study.
What separates a layer ration from everything else on the shelf
A layer ration is a complete formulated feed for hens in active egg production. Three things distinguish it from chick starter, all-flock, or scratch:
- 16–18% crude protein. Above starter/grower (also 18%+ for chicks), at parity with most all-flock feeds, higher than scratch grain (10–12%).
- 3.5–4.5% calcium, sourced from limestone or oyster-shell flour added to the formulation. Layers need roughly 4 grams of calcium per egg shell; that's ~10× what a meat bird or chick needs.
- Methionine and lysine balanced for egg-protein synthesis. These two amino acids are the bottleneck nutrients for laying production; under-supplied hens drop lay rate within 2–3 weeks.
Anything labeled “layer” from a major mill (Purina, Nutrena, Kalmbach, Manna Pro, regional house brands) hits these three. Anything labeled “all-flock,” “flock raiser,” “multi-flock,” or “maintenance” runs lower on calcium and is the wrong bag for active layers — convenient for mixed coops with roosters and meat birds, fine on paper, not what a hen at peak lay needs.
Pellets win for adult layers; mash is for hobbyists who like prep
| Format | Waste | Storage | Best for |
|---|---|---|---|
| Pellets | Lowest (5–15%) | Easiest, low dust | Default for adult layers |
| Crumble | Medium (15–25%) | Moderate dust | Pullet transition, mixed flocks |
| Mash | Highest (25–40%) | Dust-heavy, harder | Fermenting, palatability |
| Fermented mash | Low (mash but eaten) | Daily prep required | Hobbyist optimization |
For a beginner backyard flock, my default is pellets in 50-lb bags and nothing else. Crumble earns its place during pullet transition off grower; fermented mash earns its place if you actually enjoy the daily five-minute prep. Plain dry mash is mostly waste — hens flick it out of the feeder hunting for the bigger bits, and 25–40% of the bag ends up on the coop floor. Skip it unless you're fermenting.
The five feed types you'll see at the feed store
Bag labels at any feed store fall into five formulations. The difference between them is mostly protein percentage and calcium content — pick by the bird's life stage, not by brand:
| Type | Protein | Calcium | Use |
|---|---|---|---|
| Starter | ≥18% | None added | Chicks 0–8 weeks |
| Grower | ~16% | None added | Pullets 8–18 weeks |
| Layer | 16–18% | 3.5–4.5% | Active layers 18+ weeks |
| All-flock | 18–20% | Low | Mixed-age coops + roosters |
| Scratch | 10–12% | None | Treat / enrichment only (≤15% of intake) |
The two rules that matter. First: feeding layer feed to chicks or pullets causes kidney damage from excess calcium — starter and grower are the right ration until ~18 weeks. Second: scratch grain is a treat, not a ration. Hens fed primarily on scratch crash lay rates within a month and become protein- and calcium-deficient. Use scratch as 10–15% of daily intake at most (~1/4 cup per bird per day), scattered in the run as enrichment or thrown on deep litter to encourage turning.
The shortcut for mixed flocks: run all-flock + free-choice oyster shell year-round. All-flock is safe for chicks, pullets, roosters, and layers as a base ration; the oyster shell supplies the calcium layer feed would otherwise include. Hens self-regulate; non-laying birds ignore it. Many keepers run this combo to simplify storage. Organic / soy-free / non-GMO are input choices, not nutritional ones — a 16% protein conventional layer and a 16% protein organic layer produce functionally identical eggs.
Free-choice oyster shell, in a separate dish, every flock
The most-skipped step in beginner feed routines: offer crushed oyster shell free-choice.Layer feed contains calcium, but active layers at peak production (high-output breeds like Sex-Links and Leghorns at 250+ eggs/year) draw down body calcium reserves faster than the feed alone replenishes. Hens self-regulate oyster shell intake — they take exactly what they need and ignore it the rest of the time. Without it you'll see thin-shelled eggs, rubber eggs (no shell at all), and over time, brittle bones on the hens themselves.
A 5-lb bag of crushed oyster shell runs $4–6 and lasts a 6-bird flock 3–4 months. Set it in a small dish near the feeder. Don't mix it into the pellets — that defeats the self-regulation, and the hens that don't need extra calcium that week eat it anyway. Crushed eggshell from your own flock works in a pinch but it's a worse default — variable particle size, and you're asking the bird to recycle calcium she just laid out.
Buy a month of feed at a time, not three
Open feed loses palatability and nutritional value within 4–6 weeks. Vitamins (A, D, E) degrade fastest; protein quality drops next. By 8 weeks open, the feed is detectably stale, hens reduce intake, and lay rate drops with it. The bulk-bag move at the co-op doesn't save money once a third of the bag goes flat before the hens get to it.
The only storage I'd trust is a galvanized metal trash can with a tight-fitting lid, in a cool dry shaded spot. Plastic bins are a rodent open invitation — rats chew through them in a night, and a single rat eats 1–2 lb/day off an open feeder. Metal can, lid clipped, out of direct sun. That's it.
What to skip: organic, probiotic, scratch-as-ration, DIY
- “Organic” layer feed at 2–3× the price. Organic certification covers pesticide and synthetic-fertilizer inputs, not nutritional spec. A conventional layer feed at the same protein percentage produces functionally identical eggs. Buy organic because you want to buy organic, not because the hens or the eggs are healthier — they aren't, in any way the data shows.
- Layer feed with added probiotics or essential oils. Marketing premium on a base layer ration. Clinical evidence for backyard-flock probiotic benefit is thin to nonexistent; normal access-to-soil immunity does the same job. Pay for protein, not for the buzzword on the front of the bag.
- Scratch grain as the primary feed.Scratch is 10–12% protein, no balanced amino acids, no calcium. It's a treat (10–15% of daily intake), not a ration. Hens fed primarily on scratch crash lay rates within a month and become seriously deficient — this is the most-common “why did my hens stop laying” cause I've seen in beginner flocks.
- Custom DIY whole-grain blends without nutritional consulting. Possible to do well; easy to do badly. The economics rarely beat a commercial layer feed unless you grow your own grain, and a DIY-blend mistake shows up two months later as a half-rate flock with thin shells. Start with bag feed; revisit DIY only after 1–2 years of stable flock keeping.
A bag a month for six hens, two for twelve
A 6-hen layer flock eats roughly 1.3–2.0 lb/day combined, or 40–60 lb/month. A 50-lb bag covers 25–35 days. A 12-hen flock eats 2.6–4.0 lb/day, or 80–120 lb/month — two 50-lb bags per month, or one bag every 13–18 days.
Run the math for your specific flock in the feed amount calculator. It outputs lb/day, lb/week, lb/month, recommended bag size, and reorder cadence based on flock count, life stage, and free-range supplement.
Common questions
What is the best chicken feed for laying hens?
A complete layer ration at 16–18% crude protein with supplemental calcium (oyster shell). The format (pellets, crumble, mash) is preference; the formulation is what matters. Whatever brand is fresh and locally available — Purina Layena, Nutrena Country Feeds, Scratch and Peck, or your feed mill's house layer blend — works as long as it hits the protein + calcium spec. Skip anything labeled 'all-flock' or 'flock raiser' for hens that have started laying — those run lower protein and less calcium than layers need.
Pellets, crumble, or mash — which feed format is best?
Pellets are the default. Less waste, easier storage, no dust. Crumble (broken pellets) is fine and actually better for younger pullets transitioning from grower. Mash is fresh-ground meal — slightly better palatability, much higher waste because hens flick it. Fermented mash is a hobbyist favorite that improves digestibility but requires daily prep. For a beginner backyard flock, buy pellets in 50-lb bags; revisit format only if you have a specific reason.
What protein percentage do laying hens need?
16% minimum, 18% target. The published Cooperative Extension figure for a complete layer ration is 16–18% crude protein, with 18% recommended for active layers in production. Lower-protein 'layer mash' feeds at 14% don't sustain consistent laying — hens drop production by week 2-3 on under-protein feed. During molt (annual feather regrowth), bump to 20% protein for 6–8 weeks; molting birds need extra amino acids for feather construction.
Do laying hens need supplemental calcium?
Yes — separately from the feed. Layer feed contains calcium carbonate, but laying hens at peak production need more calcium than the feed alone provides for consistent hard shells. The standard practice: offer crushed oyster shell free-choice in a separate dish. Hens self-regulate intake — they take what they need. Without supplemental calcium, eggs progressively get thinner shells (sometimes shell-less), and the hen pulls calcium from her own bones. Don't rely on layer feed alone.
Should chickens free-range instead of eating commercial feed?
No, they need both. Free-range forage varies enormously by season — lush spring pasture is calorie-rich and protein-adequate; dry summer grass is mostly fiber. Calcium availability from foraged sources is essentially zero for most backyard pastures. Without supplemental layer feed, free-ranging hens chronically under-eat protein and calcium, which crashes lay rates and produces thin-shelled eggs. Treat free-range as a 20–50% supplement to the calorie budget; the bag is still the foundation of the ration.
How long does a 50-lb bag of layer feed last?
About 25–35 days for a flock of 6 standard hens (consuming 1.3–2.0 lb/day combined), or 13–18 days for 12 hens. Open feed loses palatability and nutritional value within 4–6 weeks; don't buy more than a month of feed at a time unless you have a sealed metal storage container. Heated humid storage accelerates rancidity faster than cold dry storage.
Related calculators and pages
- Feed amount calculator →
- Feed amount calculator →
- Feed cost calculator →
- Coop size calculator →
- Methodology + sources →
- 1. Alabama Cooperative Extension System ANR-2913 — Feeding Chickens for Egg Production — anchor for layer protein spec (16–18%) and calcium baseline. ↩
- 2. UMN Extension — Raising Chickens for Eggs — cross-confirmation on layer-feed nutritional baseline. ↩
By Jimmy L Wu. Reviewed 2026-05-19. Format and brand recommendations reflect 2026 retail availability at standard feed-store distribution. Storage and reorder math from the HatchMath feed amount calculator engine. Not veterinary advice — for sick birds or any animal-health emergency, consult an avian or livestock veterinarian, or your county Cooperative Extension office.