Transition birds to a new feed gradually over 7–14 days by blending old and new feed in increasing proportions.
For the full breakdown, see our best Feed For Poultry guide.
Going cold turkey on a feed switch is the fastest route to messy droppings, a drop in appetite, and birds that refuse the new ration entirely. A slow, staged blend protects the flock’s digestion, keeps intake steady, and gets everyone eating the new feed without drama. The transition works the same whether you’re moving chicks from starter to grower, pullets to a layer ration, or switching brands.
The 7–14 Day Blending Schedule That Works
The most reliable method is a stepped blend that slowly raises the share of new feed. Stick to the same feeding times each day and mix both feeds in the same feeder so the routine stays familiar.
| Days | Old Feed | New Feed |
|---|---|---|
| Days 1–2 or 1–3 | 75% | 25% |
| Days 3–4 or 4–6 | 50% | 50% |
| Days 5–6 or 7–9 | 25% | 75% |
| Day 7–14 | 0% | 100% |
Move to the next ratio only when birds are eating normally and droppings look healthy. If intake drops or manure turns loose, hold that ratio for 3–5 extra days or step back to the previous mix until they stabilize.
Signs the Flock Is Struggling With the Switch
Watch droppings, appetite, crop fill, and body weight during the transition. The first warning signs are usually loose or unusually colored droppings, birds leaving feed in the pan, or a visible drop in how much they eat at each feeding. Treats are a common hidden culprit — if birds fill up on scratch, they won’t eat enough of the new ration to adapt. Keep treats to no more than 10–15% of total intake throughout the switch.
Feed Changes to Avoid and When to Make Them
Never change feed when birds are already stressed, sick, or recovering from vaccination. Avoid switching during extreme heat or cold, and don’t introduce a new ration right after a move or other major disruption. Layer rations deserve extra care: introduce them gradually around 16 weeks, while some poultry programs recommend staying on grower feed until 18 weeks or first egg, whichever comes first. Keep grit and oyster shell available free-choice while birds are on a layer diet, since a feed change doesn’t replace calcium management.
FAQs
How long should a poultry feed transition take?
Most flocks adjust within 7 to 14 days. The exact timeline depends on how quickly birds accept the new feed and whether digestion stays normal. Slower is always safer — extending each ratio by a few days causes no harm, while rushing the switch risks digestive upset and feed refusal.
Can I switch chicken feed brands without mixing?
Switching brands abruptly is the most common cause of digestive upset. Even when both feeds are complete rations, birds need time to adjust to the new ingredient profile. Always blend old and new feed gradually, even between brands, and monitor droppings and appetite throughout.
What should I do if my chickens stop eating the new feed?
Step back to the previous ratio and hold it until intake returns to normal. Check that treats aren’t filling them up, confirm fresh water is available, and give the flock a calm environment. Once they eat steadily again, resume the blend at a slower pace.
References & Sources
- Nutrena. “How to Switch Feeds.” Details the gradual blending schedule and monitoring guidance for poultry.
- Nutrena. “Making the Switch: Chick Feed to Layer Ration.” Explains timing and gradual introduction of layer rations.
- Hy-Line International. “Hy-Line W-36 Commercial Management Guide.” Documents the 16-week and 18-week guidance for switching to a layer ration.
Mo Maruf
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