Poultry Feed Formulation: Cutting Costs Without Cutting Performance
On a chilly dawn in Goromonzi, a line of white broilers shuffles impatiently as 45-year-old farmer Mai Chipo pours feed into the trays. A year ago, she relied entirely on commercial rations. Then prices jumped twice before Christmas, and her profit per bird almost vanished. Today, the feed in those trays was mixed on her own homestead.
Feed accounts for 65–75% of poultry production costs in Zimbabwe. When feed prices rise, profits disappear fast. On-farm feed formulation offers a way out — if it’s done with science, not guesswork. Done correctly, home-mixed rations can match commercial performance at 20–40% lower cost per kilogram. Done badly, they guarantee slow growth, disease, and disappointment.
This guide unpacks how small and medium-scale poultry farmers can formulate and mix their own feed without sacrificing bird performance.
What Must A Good Poultry Feed Deliver?
Whether you’re mixing broiler starter, broiler finisher, or layer mash, every poultry feed must reliably supply five things:
FFA Explainer:
A balanced poultry ration is more than just “maize and something protein.” Birds need the right balance of energy, protein, minerals, vitamins, and digestibility for their age and purpose. Under-supplying any one of these can quietly erode performance — even if the birds look full and active.
- Energy: Fuels growth, movement, body heat, and egg production. In Zimbabwe, yellow or white maize is usually the main energy source, sometimes complemented by sorghum or wheat by-products.
- Protein: Builds muscle and eggs. Typical crude protein (CP) targets are:
- Broiler starter: 22–24% CP.
- Broiler finisher: 19–21% CP.
- Layers: 16–18% CP.
- Calcium and phosphorus: Essential for strong bones and, for layers, good eggshells. Layers need much more calcium than broilers.
- Vitamins and minerals: Micronutrients that support immunity, fertility, and growth.
- Digestibility: Nutrients must be in a form the bird can actually absorb; finely ground maize, properly processed oilcakes, and clean, mould-free ingredients matter.
The aim of feed formulation is simple: combine locally available ingredients to hit these nutritional targets at the lowest cost per kilogram, without cutting corners on essentials.
Common Feed Ingredients In Zimbabwe
Across Mashonaland, Matabeleland, Manicaland, and the Midlands, most poultry feeds are built from a familiar toolbox of ingredients.
Energy Sources
- Maize grain (about 14.0 MJ/kg metabolisable energy, ~9% CP): The cornerstone energy ingredient in most rations.
- Sorghum: Can safely replace up to about 50% of maize in many formulations if properly ground.
- Wheat bran: Lower in energy, useful as a filler and fibre source, especially in layer diets.
Protein Sources
- Soya cake / full-fat soya (around 38–45% CP): The best vegetable protein source widely available in Zimbabwe.
- Sunflower cake (about 28–32% CP): Cheaper and widely available; useful but lower in protein and energy than soya.
- Fishmeal (about 60–65% CP): Excellent amino acid profile, but expensive. Often used at about 3–5% of the ration to boost quality.
- Dried blood meal (around 80% CP): Very high protein but strong-smelling; usually kept at or below about 3% to avoid palatability issues.
Calcium And Phosphorus Sources
- Limestone flour / agricultural lime: Cheapest calcium source; widely used in both broiler and layer rations.
- Oyster shell: Particularly good for layers, as it releases calcium slowly to support night-time shell formation.
- Dicalcium phosphate (DCP): Supplies both calcium and phosphorus, important for bones and eggshell quality.
Premixes
A commercial vitamin–mineral premix is non-negotiable.
- Available from companies like Agricura, National Foods, and veterinary suppliers.
- Supplies vitamins (A, D, E, K, B group) and trace minerals (zinc, manganese, selenium, etc.).
- Cost is roughly US$1–2 per 50 kg of finished feed — a tiny cost compared to the losses from deficiency.
Skipping the premix to save money almost always backfires through poor growth, weak bones, thin shells, and increased disease problems.
Sample Feed Formulations You Can Build From
Below are example formulations for a 100 kg batch, using typical Zimbabwean ingredients. They’re starting points, not magic recipes.
Sample Broiler Finisher (approx. 20% CP, 100 kg)
- Maize grain: 60 kg
- Soya cake (full-fat): 20 kg
- Sunflower cake: 12 kg
- Fishmeal: 4 kg
- Limestone flour: 2 kg
- Dicalcium phosphate: 1 kg
- Salt: 0.3 kg
- Vitamin/mineral premix: 0.5 kg (as per supplier instructions)
- Coccidiostat (e.g., Coxidin): according to label directions
Sample Layer Mash (approx. 17% CP, 100 kg)
- Maize grain: 55 kg
- Soya cake: 18 kg
- Sunflower cake: 12 kg
- Wheat bran: 4 kg
- Limestone flour: 8 kg
- Dicalcium phosphate: 1.5 kg
- Salt: 0.3 kg
- Vitamin/mineral premix: 0.5 kg
These mixes assume average ingredient quality. In practice, the crude protein of soya and sunflower cake in Zimbabwe can vary widely between suppliers. Where possible, larger producers should have major ingredients tested once or twice a year to fine-tune their formulations.
How To Mix Feed Properly On-Farm
Even the best formula fails if the mixing is poor. Uneven mixing means some birds get too much salt or premix, while others get almost none.
Step 1: Prepare A Pre-Mix
- Measure all small-quantity ingredients: salt, premix, coccidiostat, and any other additives.
- Mix these thoroughly with 5–10 kg of maize meal (or other energy ingredient) to create a fine, even pre-mix.
Step 2: Add Bulk Ingredients
- Spread part of the ground maize on a clean concrete floor, plastic sheet, or in a drum mixer.
- Sprinkle the pre-mix evenly over it.
- Add the rest of the maize, protein meals, and mineral powders.
Step 3: Mix Thoroughly
- On a floor: use shovels to turn the mix at least three to four times, from different directions, for at least five minutes.
- In a drum or small mixer: run the mixer for at least five minutes after all ingredients are added.
Always clean mixing surfaces before and after use to avoid mould or contamination.
Grinding And Pelleting: Do They Matter?
Grinding
- Whole maize must be ground; birds can’t efficiently digest large kernels, and selective eating becomes a problem.
- Hammer mills at service centres in most district towns typically charge about US$2–4 to grind 100 kg.
Pelleting
- Pellets reduce feed wastage and improve feed conversion by around 5–10% compared to mash.
- Small pelletisers are available on the market, but they only make financial sense if you’re mixing at least 500 kg per week.
Many Zimbabwean smallholders do well with properly ground mash, focusing first on formulation accuracy and good management before investing in pelleting equipment.
Quality Control: Avoiding False Economies
On-farm mixing is only cheaper if the birds perform as well as on commercial feed. That means taking quality seriously.
Control Ingredient Quality
- Buy grain and cake from reputable suppliers; avoid visibly mouldy, insect-infested, or sour-smelling stock.
- Store ingredients off the ground, in dry, ventilated spaces.
Store Mixed Feed Safely
- Keep mixed feed in sealed bags or drums.
- Aim to use each batch within two weeks to minimise nutrient loss and mould growth.
Weigh, Don’t Guess
- Use a simple hanging or kitchen scale to weigh each ingredient.
- A few extra kilograms of maize or a missing kilogram of soya can quietly pull protein levels below target.
Measure Performance Against Benchmarks
- For broilers: track average daily gain and feed conversion (kg feed per kg live weight) against what you previously achieved on commercial feed.
- For layers: monitor hen-day egg production, egg size, and shell quality.
Test your home-mixed feed on one batch or one house first. If growth or egg production matches or beats your old results, you’ve likely hit the right balance — and the savings are real.
Is On-Farm Feed Formulation Right For You?
Mixing your own feed isn’t for every poultry farmer. It demands time, reliable ingredient sourcing, and attention to detail. For a household raising 25 broilers for Christmas, commercial feed may still be the simplest option.
But for farmers like Mai Chipo, running batches of 200 birds or more, the maths starts to shift. A saving of even US$0.10 per kg of feed, multiplied across tonnes of feed per year, quickly turns into school fees, a new water tank, or the down payment on a small pelleting machine.
Under Zimbabwe’s push to build competitive, resilient value chains in line with NDS1, smallholder poultry farmers who master feed formulation are quietly rewiring the economics of their business. They’re not cutting corners — they’re cutting waste. And in a tight-margin enterprise like poultry, that difference is everything.
📲 Subscribe to our WhatsApp Channel to Get Our Updates On Your Mobile
About The Author
