Broiler Chicken Feeding Program: Starter to Finisher
TL;DR: Broiler feeding steps down in protein as the bird grows — a high-protein starter (roughly 20-24%) early, a grower feed in the middle (roughly 19-22%), and a lower-protein finisher (roughly 15-20%) heading into harvest. On a short 28-35 day Philippine backyard cycle, many growers compress this to just starter and finisher since there isn’t time left in the cycle to justify a third stage. Feed is the single biggest cost in raising a broiler, so getting the stages and the transitions right matters more here than in almost any other chicken-keeping decision.
Feed is the largest single expense in raising a broiler — bigger than the chick, the housing, or anything else in the cycle. Getting the feeding program right isn’t about finding one perfect brand; it’s about matching protein level to what the bird actually needs at each point in a cycle that, as covered in our broiler raising pillar guide, often runs just 28-45 days start to finish.
This guide breaks the standard starter-grower-finisher program into stages, explains why the stages exist, and covers how the schedule compresses on a short backyard cycle instead of the longer commercial timeline most feeding charts assume.
What Is the Starter-Grower-Finisher Feeding Program?
The starter-grower-finisher program is a three-stage feeding schedule that steps protein down as a broiler grows — high protein early to build frame and organs fast, moderate protein in the middle for continued muscle growth, and lower protein near harvest when the bird is finishing rather than building. The logic is the same one that applies to any chicken’s staged feeding, covered in our 6-stage gamefowl feeding guide — broilers just compress the whole progression into a few weeks instead of several months.
| Stage | Typical crude protein | What it’s for |
|---|---|---|
| Starter | ~20-24% | Rapid early frame and organ development |
| Grower | ~19-22% | Continued muscle growth as early growth rate tapers |
| Finisher | ~15-20% | Weight and muscle finishing, less frame-building needed |
Energy content moves in the opposite direction of protein — finisher feed typically carries more energy (calories) per kilo than starter feed, since a finishing bird needs fuel for weight gain more than raw material for new tissue.
What Does the Starter Stage Look Like?
Starter feed is the highest-protein feed in the program, commonly 20-24% crude protein, fed from day one through the first few weeks when the chick is building its frame and organs faster, relative to its size, than at any later point in the cycle. Feed it ad libitum — unlimited access — since restricting intake this early works against the fast, even growth the bird is bred for.
Use a shallow feeding tray for the first several days so day-old chicks can reach the feed easily, moving to standard tube or trough feeders shortly after. Fresh water with electrolytes for the first few days helps chicks that were stressed by hatchery transport settle in and start eating well.
What Does the Grower Stage Look Like?
Grower feed steps protein down slightly to roughly 19-22% as the bird moves past its earliest, fastest-relative growth window into steady muscle development. This is the stage most likely to compress or disappear entirely on a short cycle — if your birds are harvesting at 32-35 days, there may only be a week or so between the end of the starter phase and the point where finisher feed makes more sense.
Feeders should scale up through this stage as intake rises fast; broilers eat substantially more per bird per day at three weeks than at one week. Keep feeders and waterers clean daily — a fast-growing, densely housed flock fouls both faster than a smaller number of slower-growing birds would.
What Does the Finisher Stage Look Like?
Finisher feed carries the lowest protein of the program, typically 15-20%, fed for the final stretch before harvest when the bird needs energy for finishing weight more than raw protein for new frame. Finisher feed is also formulated without medication that would require a withdrawal period before slaughter — feeding it for the final week or so of the cycle, as a general practice across poultry feeding, avoids any drug-residue concern at harvest. Always check the specific product label for the withdrawal guidance that applies to whatever feed or additive you’re using.
Does a Short Philippine Cycle Need All Three Stages?
Not necessarily — the three-stage program is built around a longer production cycle, and a fast 28-35 day Philippine backyard or small-commercial cycle often doesn’t leave enough time to justify a distinct middle stage. Many small growers run a simplified two-feed program instead:
| Simplified stage | Rough day range on a 30-35 day cycle | Feed type |
|---|---|---|
| Starter | Day 1 to ~14-18 | High-protein starter (~20-24%) |
| Finisher | ~Day 14-18 to harvest | Lower-protein finisher (~15-20%) |
Treat the day ranges above as a starting point to adjust, not a fixed rule — the right switch point depends on your birds’ actual growth, your target harvest weight, and your specific cycle length. A grower running the fuller 40-45 day cycle described in our broiler raising pillar guide has more room to run all three stages as originally designed.
How Should You Switch Between Feed Stages?
Switch gradually over a few days by mixing an increasing proportion of the new feed into the old rather than swapping the whole feeder over at once — an abrupt feed change is one of the more common causes of digestive upset in any chicken, broilers included. This is the same transition principle covered in our 6-stage gamefowl feeding guide; broilers just need it applied on a much tighter calendar.
What Feeding Mistakes Cost the Most Money?
Overfeeding a high-protein stage for longer than needed wastes money directly — starter feed costs more per kilo than finisher feed, and feeding it past the point the bird needs it adds cost without adding growth. Dirty or wet feed in feeders left exposed to Philippine humidity spoils and gets wasted or refused. Abrupt feed switches that cause digestive upset can set growth back at exactly the point in a short cycle where there’s no time to recover it. Overcrowded feeder space forces smaller or slower birds to eat less than they need, producing an uneven batch at harvest — pair your feeding program with the space guidance in our chicken coop size per bird guide.
The Honest Limits Here
The protein ranges above are widely documented broiler feeding stages, and the biological logic behind them — high protein for building, lower protein for finishing — holds regardless of where you’re farming. What this guide can’t do is tell you the exact day to switch stages for your specific flock, because that depends on your birds’ actual growth rate, your strain, and your target harvest weight. This guide does not state feed prices — Philippine feed prices move constantly by brand and region, so use the feed conversion ratio guide to work out your actual cost per kilo of gain from your own numbers rather than a number that would already be stale.
Once your birds are fed and growing, the next question is whether they converted that feed efficiently — see feed conversion ratio explained for how to calculate it from your own records. Or step back to the broiler raising pillar guide for the full cycle, and browse the meat birds category for everything else in this track.
Frequently Asked Questions
What is a starter, grower, finisher feeding program?
It is a three-stage feeding schedule that steps a broiler's protein intake down as it grows — a high-protein starter feed early, a moderate grower feed in the middle, and a lower-protein finisher feed heading into harvest, matching the feed to what the bird actually needs at each stage.
What protein percentage should broiler starter feed have?
Broiler starter feed commonly runs 20-24% crude protein, fed during the first few weeks when the bird is growing fastest relative to its size.
How is broiler finisher feed different from starter feed?
Finisher feed carries less protein, typically in the 15-20% range, because a bird nearing harvest weight needs less protein for frame-building and more energy for finishing muscle and fat. Finisher feed is also formulated with no medication requiring a withdrawal period before slaughter.
Do I need all three feed stages for a short broiler cycle?
Not necessarily. The three-stage program is built around longer production cycles. On a shorter Philippine backyard cycle of around 28-35 days, many growers compress to two feed types — a starter and a finisher — since there often isn't enough time left in the cycle to justify a separate mid-stage feed.
How do I switch a broiler flock from one feed stage to the next?
Switch gradually over a few days by mixing an increasing ratio of the new feed into the old rather than swapping the whole feeder at once, the same transition principle that applies to any chicken changing feed types.
Should broilers have feed available at all times?
Yes, broilers are typically fed ad libitum — unlimited access — through most of the cycle, since restricting intake works against the fast, steady growth the bird is bred for.
What feeding mistakes waste the most money in a broiler cycle?
Feeding a high-protein starter for longer than needed, letting feed spill or spoil in dirty feeders, and switching feed types abruptly all waste money — feed is the single largest cost in a broiler cycle, so small inefficiencies add up fast.