To formulate poultry feed you need four things: a nutrient target for the bird and its age, the nutrient content of the ingredients you can actually buy, the price of each, and the maximum share of the mix each one is allowed to occupy. Uganda's ministry publishes all four for most local ingredients. The last one is where home mixing usually fails, because a ration can hit its protein figure and still be unfeedable.
What Formulating Poultry Feed Actually Means
Formulation is not a recipe. It is a small arithmetic problem with a target on one side and a set of limits on the other, and the answer changes every time a bag price moves or a sack of bran runs out. Somebody handing you fixed percentages has solved the problem once, for their ingredients, at their prices, and frozen it.
MAAIF's own poultry training manual sets out the five inputs a formulation needs: which ingredients are available where you are, what each contains, what each costs, what the target bird requires, and the minimum and maximum rate at which each ingredient can enter the ration. That last item is the one nobody puts on a blog. Cotton seed cake carries a compound that damages birds. Cassava is almost pure energy and short on one amino acid. Brewers' grains are bulky. Each has a share of the mix above which it stops helping and starts hurting, and those limits are published.
The same manual is blunt about who does this properly. It tells the reader to get a feed formula for the target species and age from a qualified animal nutritionist, and to send a sample of what they mixed to a feed laboratory to check the result. That instruction sits inside the ministry's own section on backyard mixing, not as a disclaimer. This page takes it at face value: what follows is how the arithmetic works and where it breaks, so that you can ask a nutritionist a sharp question and audit what comes back. It sits under the animal feeds and health guides.
The Nutrient Targets Uganda Publishes, and Where They Disagree
Start with the target, because everything else is worked backwards from it. MAAIF publishes nutrient requirements for poultry rations in more than one place in the same manual, and the tables do not agree with each other. That is not a reason to ignore them. It is a reason to formulate to a band and then verify.
| Ration | Energy kcal per kg | Crude protein |
|---|---|---|
| Broiler starter | 2,800 to 3,100 | 20 to 23% |
| Broiler finisher | 2,900 to 3,150 | 18 to 21% |
| Chick mash | 2,700 to 2,940 | 18 to 20.5% |
| Grower mash | 2,600 to 2,840 | 15 to 20% |
| Pre layer mash | About 2,740 | About 17.5% |
| Layer mash | 2,800 to 2,870 | 16 to 17.7% |
Every band in that table is the span of MAAIF's own published figures, not an average and not a preference. Four things are worth knowing about how it was built.
The broiler starter range exists because the manual states three different sets for the same ration in three places, at 23% protein with 3,100 kcal, at 20% with 2,800, and at 23% with 3,050. The broiler finisher range exists for the same reason. Breeder companies publish their own specifications for their own genetics and those can run below MAAIF's floor in late finishing, which the broiler feeding guide covers with the sources named.
The grower mash gap is the widest and the most consequential: one ministry table puts a layer grower at 15% protein and another at 20%. That is a third more protein for the same bird at the same age, and on a formulation page it is the difference between a workable mix and a wasteful one. Nothing in the manual reconciles them.
The chick mash gap has a likely explanation and it is instructive. The lower figure comes from a table whose column is headed for chicks and ducklings together, while the higher one comes from a chicken specific table that lists ducks separately at a different figure again. A merged species column is not a chicken specification. Check which species a poultry table row belongs to before you formulate from it, because the same manual carries turkey rows with protein up to 28% sitting directly under the chicken rows.
So the working rule. Formulate to the band, then let two things decide inside it: the bag label of any commercial feed you are matching or replacing, and a nutritionist who knows what your birds are and what you can buy. Then verify by laboratory analysis and by the birds. For the full phase detail on layers, including calcium, the layer feeding guide carries it, and poultry feed types explained covers what mash, crumb and pellet mean before you mill anything.
Energy Ingredients and the Maximum They Can Take Up in a Poultry Ration
Energy is the largest part of any poultry ration by weight, and it is also what governs how much a bird eats. MAAIF makes this point plainly: birds eat less of a high energy ration, so a high energy mix has to carry proportionally more of everything else or the bird ends up short. Fibre works the other way. A high fibre ration sits in the gut partly digested, intake falls, and nutrient supply falls with it. That single mechanism is why every bulky ingredient below has a ceiling.
| Ingredient | Role | MAAIF rate |
|---|---|---|
| Maize | Energy | 60 to 70% |
| Cassava, dried | Energy | Up to 25% |
| Rice by product | Energy | Max 15 to 20% |
| Cane molasses | Energy | Max 20% |
| Wheat bran | Energy | Up to 10% |
| Ground wheat | Energy | Up to 20% |
| Brewers' grains, layers | Energy | Max 5 to 10% |
| Brewers' grains, broilers | Energy | Max 20% |
| Coconut or peanut | Energy | 5 to 10% |
| Soya bean cake | Protein | Up to 25% |
| Fish meal | Protein | 10 to 20% |
| Peas and pulses | Protein | 25 to 30% |
| Coconut cake | Protein | Up to 20% |
| Palm cake | Protein | Up to 15% |
| Meat meal | Protein | Up to 10% |
| Blood meal | Protein | Max 5% |
Maize is the exception in that table: the figure is a working band rather than a limit, which tells you something about how Ugandan rations are built. Everything else is a stated maximum. Cassava must go in dry and milled and needs methionine added alongside it, because it brings energy and almost no protein. Molasses above its limit acts on the birds' water balance. Sorghum is higher in protein than maize and higher in energy, but it carries tannins, and the manual gives it no numeric ceiling, so treat it as an ingredient to discuss rather than one to load.
One ceiling is deliberately missing from the table above. MAAIF gives cotton seed cake two different inclusion rates for what reads as the same processing state, one of them four times the other, and the higher of the two is far outside every other protein ceiling in the same table. Rather than pick one silently, this page publishes neither and says why: ask a nutritionist for the cotton seed cake limit, confirm the cake has been detoxified, and treat any percentage you are given verbally with suspicion. The ingredient itself is covered on cotton seed cake in animal feed.
The Ingredient MAAIF Sets No Ceiling For, and Why That Matters for Maize Bran
Look back at the energy list. Wheat bran has a ceiling. Rice by product has a ceiling. Maize bran, which is the energy ingredient Ugandan poultry rations are actually built on after maize itself, appears nowhere in the ministry's energy table and carries no published inclusion rate at all. Ugandan survey work on commercial farms and feed mills finds white maize and maize bran to be the main energy sources in use, so the commonest ingredient in the country is the one with no published limit.
That absence matters in two directions. Bran is bulkier and lower in energy than the grain it comes from, so a bran heavy ration drags energy density down and trips the fibre mechanism above. And bran is where the mould risk concentrates, because it is the fraction that comes off the grain, it is often stored damp, and it moves through more hands.
The manual does list one class of additive aimed squarely at this problem, a clay mineral used as a toxin binder. Binders are a mitigation and not a licence to buy bad bran, and the inclusion of one in a home mix is a question for a nutritionist rather than a purchase to make on the strength of a page.
Minerals, Grit and the Calcium Sources on a Ugandan Farm
The mineral fraction is small by weight and it is where a home mixed ration most often goes wrong, because a shovel cannot weigh half a kilogramme accurately and the consequences of getting it wrong are structural. MAAIF publishes the content of the sources a Ugandan mixer can actually buy.
Dried and ground lake shells run about 35% calcium. Limestone runs about 45% calcium with a trace of sodium and no phosphorus. Calcium carbonate is about 38% calcium. Bone meal brings 30% calcium alongside 17% phosphorus, and dicalcium phosphate 23% calcium with 18% phosphorus, so those two are doing a double job and cannot be swapped for a pure calcium source without changing the phosphorus balance. Common salt is about 39% sodium and 61% chloride, which is why it is weighed rather than scooped. Fish is listed as a variable source of both, at 1 to 5% phosphorus and 1 to 6% calcium, and variable is the operative word.
Two cautions. First, a laying ration carries roughly three times the calcium of a grower ration, so the mineral share is not a constant you can carry across phases; the layer feeding guide has the phase figures and the reason the switch is timed the way it is. Second, published mineral tables get reprinted and reprinting introduces errors. Two Ugandan manuals carry the same university laboratory composition table and their calcium columns do not match: in one of them the calcium figures run a row out of step, which credits a common oilseed cake with roughly sixty times its real calcium content and leaves the shell row blank. If a composition table tells you a protein feed is also a major calcium source, check it against a second document before you mix anything. Mineral supplementation in general is covered on mineral supplements for livestock.
Why the Premix and the Amino Acids Are Not a Home Mixing Job on a Poultry Farm
Vitamins and trace minerals go in as a manufactured premix, sold by bird type: chick, grower, broiler, layer, breeder. Buy the premix for the bird you are feeding and follow the maker's stated rate. There is no home substitute and greens are not one.
Synthetic amino acids are the part to leave alone entirely. They go in at fractions of a percent, they come as concentrates rather than as the pure amino acid, and the strength differs between them: the common lysine product is about three quarters lysine and the common methionine product is very nearly pure. Weighing a few hundred grammes of the wrong one of those into a tonne of feed is an easy mistake with an invisible result. This page prints no amino acid inclusion figure for that reason, which is the same position the broiler and layer feeding guides take.
The manual also lists the other additive classes a commercial mill uses, including enzymes, pellet binders, antioxidants against fat going rancid, pigment sources for yolk and skin colour, and medicated additives. The medicated ones are the line a home mixer should not cross without a vet. Anything that treats or prevents disease through the feed carries a withdrawal period before eggs or meat can be sold, it is product specific, it is on the label, and neither the interval nor the rate appears anywhere on this page. Eggs come out of a layer house every day and a broiler goes to a buyer at short notice, so a medicated ration mixed by guesswork puts residues into food within the week. Ask a veterinary officer before any medicated ingredient goes near a mixer.
Working Out Feed Proportions, and Where the Two Ingredient Square Breaks
The method most often taught for this is a simple square that balances one nutrient between two ingredients. Write the target in the middle, an ingredient at each corner on the left, subtract diagonally to get parts, and read the proportions off the totals. It is quick, it is arithmetic anyone can do, and for a single nutrient with two feeds it is correct.
Now watch it fail on a real Ugandan ration. Suppose you want a broiler starter at the top of MAAIF's protein band using only maize and soya bean cake. Maize tests at about 8% crude protein in the Makerere laboratory table reprinted in Uganda's livestock manuals, and MAAIF puts soya bean cake at 42 to 43%. Run the square and it tells you soya must be roughly 43% of the mix. MAAIF's own ceiling for soya bean cake is 25%. The arithmetic is right and the answer is unfeedable, at about one and three quarter times the published limit for that ingredient, and it has said nothing at all about energy, calcium, phosphorus, sodium, methionine or lysine.
That is the honest summary of the technique. The square hits one nutrient. A poultry ration has to hit six or seven at once while respecting a ceiling on nearly every ingredient, which is a different and larger problem, and it is the problem least cost formulation software and feed nutritionists exist to solve. Use the square to sanity check a formula you were given, to see roughly where a protein figure came from, and to catch a ration that is obviously short. Do not use it to build the ration you feed for six weeks.
What you can do well without software is the shopping arithmetic. Work out the cost per kilogramme of protein from each protein feed you can buy rather than the cost per bag, because that is the comparison that decides whether this week's sunflower cake beats this week's fish meal. The ingredient pages carry the detail: soybean meal and sunflower cake. Sunflower cake is worth a note of its own: MAAIF records it as high in protein and rich in the amino acids groundnut cake is short of, while also high in fibre and low in energy, and it gives it no numeric ceiling, so it is a good protein with a bulk penalty and a limit somebody has to set for you.
Mixing Feed by Hand on a Small Poultry Farm
The formula is half the job. The manual is explicit that a good formula badly mixed does not produce the ration on paper, and that particle size has to suit the age of the bird, since chicks cannot swallow coarse mash.
Pelleting has real advantages and real costs. It cuts waste, stops the ration separating in the trough, and partly sterilises the feed. Against that, the machine costs money to buy and maintain, the heat can damage protein and vitamins, and pellets are eaten faster, which leaves birds with more idle time and more pecking. Day old chicks do better on crumbs whatever you do later.
Bagging, Labelling and the Two Week Shelf Life of Farm Mixed Feed
This is the shortest section and the one that saves the most feed. MAAIF puts the shelf life of farm mixed compounded feed at two weeks, after which it says the feed turns mouldy and becomes dangerous to the birds. So mix in batches you will finish inside a fortnight, and no larger, whatever the bulk purchase saves you on the day.
Bag into new sacks, do not compact the feed, and tie them: compacting creates the airless conditions that encourage mould. Write the feed type and the mixing date on every bag with a marker, because a fortnight is short enough that you will lose track otherwise. Stack on wooden pallets, no more than five bags high, in a ventilated store that is dry and rodent proof. The manual also asks for waterproof sacks. Storage in general, including what a bad store does to a good ration, is covered on how to store animal feed safely.
Testing the Feed You Mixed Against the Ration You Formulated
The last step is the one almost nobody does and the only one that closes the loop. Send a sample of the mixed feed to a nutrition laboratory for analysis, compare the result against the formula, and adjust. MAAIF asks for exactly this, twice, in its formulation and its mixing sections. Without it you know what you intended and not what you made, and the gap between those two is where ingredient variation, bad weighing and poor mixing all hide.
Between laboratory visits, the birds are your instrument. Weight for age against the strain's own standard, feed eaten per kilogramme of gain, and egg numbers and shell quality are all reading the ration back to you. Write them down; the poultry record template is enough, and the feed requirement calculator tells you how much of the ration a flock should be getting through, which is itself a check on whether the mix is being eaten.
Questions Ugandan Poultry Farmers Ask About Feed Formulation
Can you just give me a ration I can mix today? No, and every page that does is guessing on your behalf. The proportions depend on which ingredients you can buy this month, what they actually contain, and which bird and age you are feeding, and the ministry's own instruction is to get the formula from a qualified nutritionist. What this page gives you instead is the target band, the published ceiling for each ingredient and the mixing method, so that you can judge a formula rather than trust one.
Is home mixed feed cheaper than buying compounded feed? Sometimes, and less often than people expect. Home mixing saves the miller's margin and spends your labour, your milling, your two week batch discipline and your laboratory fee. It also transfers the quality risk onto you, which is the part that decides it: the ministry's own position is that dearer clean ingredients beat cheap contaminated ones, because the birds convert the clean ones. Work out the cost per kilogramme of protein rather than per bag before deciding. Poultry feed prices give you the figure to beat and where to buy poultry feed lists the alternative.
Can maize bran carry most of the ration? It should not, and the ministry's tables are the reason. Every bran and by product with a published rate in that manual is capped in single or low double figures because of fibre, and maize bran carries no published rate at all, which is a gap rather than a green light. A bran heavy ration lowers energy density and lowers intake at the same time, so the bird gets less of everything.
Why does my mixed feed go mouldy? Most often because the batch was too big for a fortnight, the bags were compacted, or the maize went in wetter than it looked. Mix two weeks at a time, keep the sacks loose and on pallets, and run the salt in a bottle moisture check on the grain before it is milled.
Do I need a premix, or can greens and lake shells do the job? You need a premix. Shells and limestone supply calcium and nothing else, and greens are a variable and partial vitamin source. Buy the premix sold for the bird type you are feeding and use the maker's rate.
Should I put a coccidiostat or an antibiotic in my own mix? Not without a vet. Medicated feed additives carry withdrawal periods before eggs or meat can be sold, those periods are product specific and printed on the label, and eggs leave a layer house every day. This page states no additive, no rate and no interval for any of them.
How do I know the formula I was given is any good? Three checks you can do yourself. Add the percentages and confirm they reach one hundred. Read each ingredient against the published ceilings above and see whether any is over. Then look for a premix, a calcium source and salt, because a formula with only cereals and a protein cake in it is not a complete ration. After that, mix a batch and send it for analysis.
When you are ready to buy, price your ingredients at two or three stockists on the same day and ask each one what the bran's moisture and the cake's processing state are, because those answers separate a feed supplier from a shop. Then take your ingredient list to a qualified animal nutritionist or a district production officer and have the formula written for your birds. Our suppliers directory is the place to begin, and anyone thinking of mixing for sale rather than for their own flock should read starting an animal feed business first.