Short answer: Ross 308 and Cobb 500 are both proven white broilers that reach market weight in about six weeks under good management, so neither is a shortcut to heavier birds. The Ross 308 is usually chosen for early growth and feed efficiency, and the Cobb 500 for breast yield and carcass shape. For most Ghanaian farmers the better bird is the one your buyer rewards and your house can keep cool, so run a small trial before committing a full season to either.
Key takeaways
- Both breeds reach market weight in about six weeks, so compare them by buyer demand rather than by brochure.
- Ross 308 is often chosen for growth and feed efficiency; Cobb 500 is often chosen for breast yield.
- A gap of 0.05 in FCR on a 50-bird batch of 2.3 kg birds is roughly 6 kg of feed, so small differences add up.
- Live-bird sellers should weigh their birds closely; dressed and cut-up sellers should weigh breast yield.
- Heat management decides the result more than the choice of breed does.
- Trial both breeds in consecutive batches with the same feed, house and vaccination record.
Why this comparison matters for Ghanaian farmers
Almost every farmer who orders from us at some point asks which of the two white broilers to buy. The honest answer is that both can be raised profitably in Ghana, and both are available from Halaal Farms at the same starting price of GH₵20 per chick. The choice matters less than the way you run the house afterwards, but it still shapes what you sell, when you sell it and what your buyer expects.
This article sets the two breeds side by side. It looks at growth, feed conversion, carcass quality and buyer demand, then gives you a simple way to test them on your own farm. For the detail on each breed on its own, read our Ross 308 guide and our Cobb 500 guide. You can also see the full range of breeds we supply.
Side-by-side comparison at a glance
The table condenses the main points. Figures are planning ranges for well-managed flocks in Ghana, not guarantees, and the last column explains what each row means on a working farm.
| Attribute | Ross 308 | Cobb 500 | What it means on your farm |
|---|---|---|---|
| Developer | Aviagen | Cobb-Vantress | Both are established commercial lines with feed mills that formulate for them |
| Typical market age | About 6 weeks | About 6 weeks | Both fit a standard six-week cycle and the same house routine |
| Live weight at 6 weeks | About 2.2 to 2.5 kg | About 2.2 to 2.4 kg | Plan feed and space the same way for either breed |
| Headline strength | Early growth and feed efficiency | Breast yield and carcass shape | Match the breed to what your buyer pays for |
| Feed conversion, good management | About 1.8 to 1.9 | About 1.8 to 1.9 | Management moves this figure more than the breed does |
| Heat sensitivity | High from about week four | High from about week four | Both need ventilation, lower density and cool-hour feeding in the hot season |
| Starting price from Halaal Farms | GH₵20 per chick | GH₵20 per chick | Price is confirmed in writing before payment |
| Box of 50 | GH₵1,000 | GH₵1,000 | One box is the minimum order |
Read down the table and you will see that most rows are a tie. The rows that separate the breeds are the headline strength and the buyer it suits. That is why the rest of this article focuses on buyers, carcass and trial design rather than on a single winner.
Growth and market weight: where the birds really differ
On paper both breeds reach a market weight of roughly 2.2 to 2.5 kg in about six weeks. Growers who have run both often describe the Ross 308 as the more eager early grower and the Cobb 500 as the one that keeps building muscle in the breast in the final weeks. Those impressions are useful, but they vary with the house, the feed and the season, so treat them as hypotheses to test rather than as settled facts.
Weight differences are usually smaller than the difference in how the birds are bought and sold. A trader who buys live birds by the kilogram cares about the total weight of the lot and the condition of each bird. A processor who buys carcasses cares about breast yield and uniformity. A household that buys a whole bird cares about size, price and freshness. Each buyer rewards a different trait, and that is the real axis of the decision.
Feed conversion: small gaps that add up
Feed is the largest running cost, so a small change in feed conversion matters more than it looks. Take a 50-bird flock sold at 2.3 kg per bird, which is 115 kg of live meat. The table shows how much feed that flock eats at different FCR values, and what each step costs in extra kilograms.
| FCR | Feed needed for 115 kg live (kg) | Extra feed compared with FCR 1.85 (kg) |
|---|---|---|
| 1.85 | 212.8 | 0 |
| 1.90 | 218.5 | 5.8 |
| 1.95 | 224.3 | 11.5 |
| 2.00 | 230.0 | 17.3 |
A difference of 0.05 in FCR is worth about 6 kg of feed on this batch. Across a year of batches, that adds up to a real sum. In a well-run house the gap between the two breeds is usually smaller than the gap between a good week and a bad week caused by heat, wet litter or disease. Measure your own FCR on every batch before you draw a conclusion about either breed.
Carcass quality and what your buyer pays for
Before you choose a breed, identify the buyer you will actually sell to. The most common routes are live-bird traders, households buying whole dressed birds, restaurants and butchers buying cuts, and processors buying carcasses to a specification. Each route rewards something different, and a breed that suits one may not suit another.
Ask your buyer these three questions before you decide:
- Do you pay by live weight, by dressed weight, or by the cut, and what weight range do you prefer?
- Do you judge breast size or shape when you buy, and do you reject birds for any visible faults?
- Would you pay a premium for a more uniform lot, and how much of a premium would make the choice worthwhile?
If the answers point to breast yield, the Cobb 500 deserves a closer look. If they point to weight and speed, the Ross 308 deserves it. If the buyer pays by live weight and does not look at the carcass, either breed will do, and the decision comes down to cost, supply and how well you can keep the house cool.
Heat, legs and welfare: what each breed asks of you
Both breeds are fast-growing, and both put heavy demands on the heart, the legs and the house environment in the last two weeks. The breed differences in heat tolerance and leg health are small compared with the effect of how the house is run. A farmer who ventilates well, keeps litter dry and manages density will get good results from either bird. A farmer who lets the house run hot and damp will struggle with both.
In the hot season, the practical checklist is the same for both breeds: open the curtains on the windward side, keep drinkers flowing and cool, feed in the early morning and evening, and reduce density if the afternoon temperature is high. Watch for birds that spread out and pant, sit with wings held away from the body, or crowd near the walls. Those signs mean the house is too hot, whatever breed is in it.
Which one should you choose? A decision guide
Use the lists below as a starting point. None of them is a rule, but each points to the factor most likely to decide your result.
Choose the Ross 308 if
- Your buyers pay by live weight and care most about total kilograms per lot.
- You want the earliest possible growth and the best feed efficiency you can get.
- You plan to sell at around six weeks and want a bird that reaches weight reliably.
Choose the Cobb 500 if
- You sell dressed birds or cut-up pieces, and your buyers pay for breast meat.
- You want a carcass that looks well-fleshed and uniform on the scale and on the table.
- You have a house that can keep litter dry and density sensible, since breast quality depends on it.
Either breed will do if
- You sell whole live birds to traders who buy by weight and do not inspect the carcass.
- Your main limit is space, heat or capital, rather than the choice of breed.
- The breed you can get on the day you need chicks is one you have already run successfully.
Need chicks for your next batch?
Send breed, number and town. We reply with price, hatch date and delivery cost in writing.
How to run a fair trial on your own farm
The most reliable way to choose is to run both breeds yourself, in a way that makes the comparison fair. A trial that changes three things at once tells you nothing. Use this method:
- Run the two breeds in consecutive batches in the same house, ideally in the same season, so that weather does not decide the result.
- Use the same starter, grower and finisher feeds, from the same mill, with the same feed-change dates.
- Vaccinate both batches on the same schedule and record the batch details.
- Weigh a random sample of 10 to 20 birds every week, and record the average and the range.
- Record daily mortality, feed used and any treatment, so you can calculate FCR for each batch.
- Dress five birds from each batch the way your buyer does, and weigh the breast separately.
- Sell both batches to the same buyer, and compare the net return after chick cost, feed and running costs.
Keep the notes for both batches side by side, ideally in the same record-keeping system. The breed that wins on your numbers, with your buyer and your house, is the one to order next time.
Common mistakes when comparing broiler breeds
Most comparisons go wrong for reasons that have nothing to do with the bird. Watch for these traps before you draw a conclusion.
- Comparing across seasons. A batch raised through the rains will not compare fairly with one raised in the hot, dry months.
- Judging by one weigh-in. A single bad sample can come from a single sick bird or a cold night. Use the weekly trend.
- Ignoring the buyer. The heaviest bird is not always the most profitable if the buyer pays the same price per bird regardless of weight.
- Changing feed mid-trial. A different feed in one batch hides the breed effect you are trying to measure.
- Forgetting the carcass. If breast yield matters to you, a live weight alone will never show it.
Ordering either breed from Halaal Farms
Ross 308 and Cobb 500 day-old chicks are both sold from GH₵20 each, with a box of 50 at GH₵1,000. One box is the minimum order, and lots of 1,000 chicks or more are quoted case by case. You can pay by mobile money, bank transfer or cash. We do not take online payment, and we confirm the price in writing before you pay.
Boxes leave the hatchery on hatch day, with ventilation built into the packing. We deliver to all 16 regions (the delivery page explains how), and you can collect at the farm in Opeikuma, Kasoa. If you are running a trial, ask us for the next dispatch dates for each breed so that your two batches fall in consecutive weeks as recommended above. Count the birds on arrival and send a photo on WhatsApp the same day if any are dead, because dead-on-arrival chicks are replaced free in the next hatch.

To discuss a trial or place an order, WhatsApp +233 24 915 1503, email support@halaalfarms.com, or use the order form. The broiler day-old chicks page lists the options in one place, and the price list shows current starting prices for every line.
Our recommendation for most Ghanaian farms
For a first grow-out into a market you already know, either breed works. Choose the one your buyer rewards, then put your effort into the things that decide the result on every farm: dry litter, sensible density, clean water, a feed programme you can control and a house that stays cool in the hot months. A well-run Ross 308 will beat a poorly run Cobb 500, and the reverse is equally true.
If your buyers are processors or cut-up sellers, lean towards the Cobb 500 and test it against your current bird. If you sell live birds to traders who buy by weight, the Ross 308 is a dependable choice for early growth and feed efficiency. If you are unsure, run the trial described above, and bring the results to your next order. Our FAQ answers the most common practical questions about ordering and delivery. That is the approach our own customers tend to find most useful, and it costs little more than the chicks themselves.
For a wider view of the broiler options, our broiler, layer and Sasso comparison helps if you are still deciding what kind of flock to start with, and our guide to heavier broilers covers the management levers that matter whichever breed you choose.
Questions farmers ask
Which is better, the Ross 308 or the Cobb 500?
Neither is better in every case. The Ross 308 is usually chosen for early growth and feed efficiency, and the Cobb 500 for breast yield and carcass shape. The right answer depends on your buyer, your house and your costs. Run a trial with both breeds in consecutive batches and compare the net return, not the bird on its own.
Do Ross 308 and Cobb 500 need the same feed?
The feed phases are essentially the same: starter, grower and finisher, switched by weight and appetite. Both respond well to balanced formulations from a reputable mill. Avoid pushing extra protein into the finisher for either breed, since surplus protein adds ammonia and litter problems without a matching gain in meat.
Which breed grows faster?
Under good management both reach roughly 2.2 to 2.5 kg live at about six weeks, so neither is dramatically faster on paper. Growers often describe the Ross 308 as the more eager early grower, but results vary with house, feed and season. Weigh samples each week in your own flock and let those numbers settle the question.
Which breed copes better with Ghana's climate?
Neither is heat-proof. Both are fast-growing and both suffer when the house runs hot and damp, particularly from about week four. Ventilation, lower stocking density in the hot season, clean water and feeding during cooler hours matter far more than the choice between them.
Can I mix Ross 308 and Cobb 500 in one house?
You can, but it makes your records and comparisons much harder to read. We recommend keeping each breed in its own house, or at least in separate pens with separate feed and weight records, so that you know which bird produced which result.
How much do Ross 308 and Cobb 500 chicks cost from Halaal Farms?
Both start at GH₵20 per chick. A box of 50 costs GH₵1,000, which is also the minimum order. Lots of 1,000 chicks or more get a quote of their own. Prices and delivery costs are confirmed in writing before you pay, so you know the full amount in advance.
How do I trial both breeds without losing a season?
Run them in consecutive batches in the same house, using the same feed, vaccination schedule and recording system. Keep the trial to two batches if you can, then choose. Run the batches in the same season where possible, so that weather does not decide the outcome, and sell both to the same buyer for a clean comparison.
