What Is the 90/10 Rule for Chicken? A Simple Feeding Guide
Table of Contents
- What the 90/10 Rule Means for Chicken Keepers
- Healthy Treats for Chickens: What Counts in the 10%
- Best Chicken Feed for Egg Production: Choosing the 90%
- Tips for Getting the 90/10 Split Right
- Frequently Asked Questions
Last Updated: September 19, 2026
What the 90/10 Rule Means for Chicken Keepers
What is the 90/10 rule for chicken? It is simple: 90% of a hen's daily diet should be complete, balanced feed, and 10% can be treats and extras.
This guide from Chartley Chucks explains what the 90/10 rule for chicken keepers looks like in practice. Get the split wrong and you'll see it in the nest box: fewer eggs, thinner shells, and hens that moult harder than they should. The DEFRA guidance on keeping poultry is clear that layers need a properly balanced ration to stay productive. Treats are the fun part of keeping chickens. They are also the easiest way to unbalance a diet without realising it.
A hen eats around 120g of feed a day, putting the treat allowance at roughly 12g, about a tablespoon of mixed corn, scattered late afternoon so birds head back into their enclosure. Chartley Chucks (Staffordshire) has helped keepers get this balance right: hens on a proper 90/10 split lay better and hold condition through the seasons.
Healthy Treats for Chickens: What Counts in the 10%
Healthy treats for chickens add enrichment and nutrition without pushing birds off their main feed. Pick things that do a job rather than filling them up on empty calories.
Good options include mixed corn as a scratch feed, hanging pecking blocks that support eggshell and feather quality, pecking and grazer balls for foraging, and kitchen scraps like leafy greens and cooked vegetables. Grit and oyster shell should be offered freely, not counted as a treat.
Treats are a behaviour tool too: a hanging block or scattered grazer balls cut feather pecking and aggression in a bored flock. Avoid bread, it has almost no nutritional value and fills the crop that should hold proper feed.
Best Chicken Feed for Egg Production: Choosing the 90%
The best chicken feed for egg production is a complete layers' ration, carrying the protein, calcium, and vitamins a hen needs to lay consistently. This is the 90%.
Layers' pellets or mash are the standard choice: balanced, consistent, and impossible for hens to pick through. Too much corn or scraps dilutes the ration, the feed isn't failing, it's being diluted.
Here's the split in practice:
Diet Share |
What It Is |
Daily Amount |
Purpose |
|---|---|---|---|
90% |
Complete layers' feed |
Around 120g per hen |
Protein, calcium, vitamins for laying |
10% |
Treats and extras |
Around 12g per hen |
Enrichment and small nutritional top-ups |
Free access |
Grit and oyster shell |
Always available |
Digestion and shell strength |
Tips for Getting the 90/10 Split Right
Getting the balance right comes down to a few daily habits: weigh treats once then eyeball the portion, feed treats in the afternoon to pull birds back to their housing, keep grit and oyster shell available at all times, watch eggshell quality as your early warning sign, and adjust through moulting and winter.
For keepers in Staffordshire, Chartley Chucks offers livestock collection and a free 30-minute chat on keeping and caring for chickens, with UK-wide delivery on feed and supplies. What is the 90/10 rule for chicken keeping if not this? It isn't precision, it's keeping the base ration as the base and treats as the small, useful extra they're meant to be.
Frequently Asked Questions
What does the 90/10 rule mean for chicken feed?
It means 90% of what your hens eat should be a complete layers' feed or pellets, with only 10% coming from treats, scraps and extras. The 90/10 rule chicken keepers use is a simple way to protect egg production and shell quality. If treats creep above that 10%, hens fill up on low-nutrient food and lay fewer, poorer-quality eggs.
Can chickens eat too many treats?
Yes, and it is one of the most common mistakes new keepers make. Treats such as corn, scraps and pecking blocks are fine in small amounts, but too many unbalance the diet and reduce the protein, calcium and vitamins hens get from their layers' feed. Keep treats to roughly 10% of daily intake and feed them a few hours before sunset.
What should make up the bulk of a chicken's diet?
A complete layers' feed or pellets should form around 90% of the diet, because it is formulated to supply the protein, calcium and vitamins laying hens need. For the remaining 10%, a handful of mixed corn or a Feldy pecking block works well as enrichment. Fresh, clean drinking water should always be available alongside it.
A flock that lays well and holds condition through the year starts with the right feed and the right balance. Chartley Chucks stocks layers' feed, mixed corn, pecking blocks, and grazer balls, with UK-wide delivery and livestock collection from Staffordshire. Get started with Chartley Chucks and give your hens the 90/10 split they thrive on.
