Snail Meal in Poultry Feed: A Ghana Protein

Half the dry weight is protein, and the shell changes the sum

Dried snail meat is often reported at around half its dry weight as protein. That figure is why farmers get curious about snail meal, and it is also the figure that gets quoted without its shell attached. Once the shell goes into the grinder, the protein per kilo drops and the calcium climbs. A bag of whole-snail meal is a different ingredient from a bag of meat-only meal, even if both are sold under the same name.

So the first question to ask any supplier is what is in the bag. Ask whether the meal is made from the meat alone or from the whole snail, and ask for the protein and calcium figures for that batch. A supplier who cannot say is selling you a guess. For a layer flock, the difference matters more than the price per bag, because the wrong meal can leave your shells weak or your protein short.

Which snail, and what a snail pen actually needs

The giant African land snails most often farmed in Ghana are Archachatina marginata and Achatina achatina. Both are kept in pens rather than ponds, and both need shade, moisture and a calcium source for their shells. Do not buy or move Achatina fulica, which is an invasive pest in many places. Ask the supplier for the species and check the local rules on moving snails before you bring any into the yard.

A snail pen is a shaded, covered enclosure with a sandy loam floor, a moist corner, a dry corner and a secure lid. The snails need enough humidity to stay active without the floor turning to mud, and enough calcium to build their shells. Keep the pen out of the sun and away from the poultry houses. Snails are slow, so a pen that is badly placed will stay badly placed for months.

Snails are hermaphrodites, but they mate in pairs and lay their eggs in the soil. The eggs hatch after a few weeks, and the young snails take many months to reach market size, often close to a year. That is a long wait for a feed ingredient, and it is the reason most farmers who want snail meal start small and keep their records tight.

How snail meal is made, step by step

Making snail meal is a sequence, and every step has a reason. Skip one and the meal is either unsafe or unstable.

1. Purge the snails. Keep them on clean bran and greens for several days before harvest, so their guts empty and the meal carries less grit and waste.
2. Kill the snails quickly and humanely, by the method your processing team uses. Boiling or freezing are the usual options, and both must be done fully.
3. Remove the meat from the shell, or grind the whole snail if you are making a whole-snail meal. Note which one you are doing on the batch record.
4. Cook or dry the material thoroughly. Dry it in a covered, clean, raised tray or in a dryer, until it crumbles when pressed.
5. Grind to a fine meal, sieve it, and store it sealed in a dry container.

Two points need emphasis. Cooking or drying must reach the whole batch, not just the top layer, because a damp centre keeps microbes alive. And the cleaning step matters, because grit and waste from the snails' bodies end up in the meal if they are not removed.

What the numbers look like, batch by batch

The table gives rough ranges to help you read a supplier's figures. The actual numbers for your batch are the ones on the lab sheet, and the ranges below will move with the species, the diet of the snails and how the batch was processed.

Read the table as a warning as much as a guide. A meal that looks rich in protein on paper can be a calcium problem in the layer house, and a meal that looks like a good calcium source can be a protein gap in the grower ration. Test the batch and read both figures before the meal goes into the mash.

Starting at two per cent and reading the birds

Start at about two per cent of the mash for adult layers and grower birds, and keep it there for at least two weeks. Watch feed intake, the droppings, feather cover and the weight of a sample bird. If intake drops or the droppings loosen, lower the share and check the batch before you go back up.

Keep snail meal out of day-old chick feed and out of the first weeks of brooding. Young birds have small digestive systems and little resistance to microbes in feed, and the risk is not worth a small saving. Introduce the meal to older birds only, and change one feed ingredient at a time so that you can tell which change caused a problem.

If you are using whole-snail meal, watch the calcium. Layers that get too much calcium from the feed can have problems with the shell and the gut, and birds that get too little need a clear source. Our oyster shell guide covers the calcium question in detail, and it applies to snail shell as much as to oyster shell.

A worked example for a 100-layer house

Take a 100-bird layer house eating about 110 grams of mash each a day. That is 11 kg of mash daily. Two per cent snail meal is 220 grams a day, or about 6.6 kg a month. That is the quantity you need to produce or buy every month if you use the full two per cent, and it should go into the plan before the first batch is harvested.

Now put that number next to the batch yield. Work out how many snails you need to produce 6.6 kg of dried meal, how long they take to reach market size and how many pens you need to keep the supply steady. In most small farms the answer is that snail meal supplies a share of the protein, and it needs a plan that runs for months before the first harvest. If the sums do not work, use a smaller share or do not start the pen yet.

Keep the sums on the flock record. A plan that says two per cent, 6.6 kg a month and one batch every six weeks is far easier to check than a plan that says we will use some snail meal when we have it.

Hygiene: gapeworm, rat lungworm and handling raw snails

Snails carry risks at two levels, and both need handling. For the flock, snails and slugs are intermediate hosts for gapeworm, so a live snail in the feed or on the ground is a route for the parasite. Our gapeworm guide explains the signs and why wet ground after rain is the danger season. For people, land snails can carry rat lungworm, which can cause serious illness in anyone who eats raw or undercooked snail. That is why cooking, drying and handling the snails with care are not optional.

Wear gloves when you handle snails, wash your hands and tools after each harvest, and keep a separate board and knife for the processing. Do not let the flock peck at raw snails or at the pen floor where the snails have been. Keep rats out of the snail pen and the drying area, because rats carry many diseases and eat the meal. Keep the snail pen and the poultry houses apart, with separate tools and separate footwear, in line with our biosecurity guide.

Anyone who has been ill after handling or eating snails should see a doctor and tell them about the exposure. Do not wait to see whether it passes.

Testing a batch before it goes into a bag

Every batch of snail meal should pass a short set of checks before it is used. None of these tests is complicated, and each one catches a common problem.

• Dryness: the meal should feel dry and crumble between the fingers, with no damp clumps.
• Smell: a sour, fishy or musty smell means the batch has spoiled or was stored wet.
• Grit: rub a small sample between your fingers and check for sand. Grit wears the gizzard and mixes with the mash.
• Salt: an unusually salty taste points to salted or poorly rinsed material.
• Mould: any visible mould means the batch goes in the bin, not the mash.
• Lab figures: crude protein, fat, moisture, ash and calcium, from an accredited lab, for each batch you plan to rely on.

Keep the test results on the batch record, next to the date and the source. If a flock problem shows up a month later, that record is what tells you which batch to check first.

Storing snail meal through the Ghana seasons

Snail meal is a dry ingredient that goes off when it takes in moisture. The harmattan is the easy season for storage, because the air is dry and the meal stays stable. The rains are the hard season, because humidity rises, the store feels damp, and mould and weevils appear within weeks if the meal is not sealed. Keep the meal in sealed containers, off the floor and away from the wall, and check the containers after every rain.

Use a first-in, first-out rule, and write the date of harvest on the lid of each container. Keep the meal away from the feed bags so that a damp bag does not spread mould to the meal, and keep the store free of rats and cockroaches. A cool, dry, dark room is the best place for a small batch, and a sealed plastic drum with a tight lid works well for most small farms.

Snail shell as calcium: the line we would draw

Many farmers ask whether the crushed shell alone can replace oyster shell. The answer depends on how well the shell is cleaned, dried and crushed, and on how much calcium it actually carries. Shell from a batch that has not been cleaned can carry dirt, bacteria and a smell that birds will avoid. Shell that is poorly crushed can be too coarse for the gut to use, and shell that is finely powdered can be dusty and hard to mix.

Our line is simple. Use snail shell as a calcium source only after you have cleaned, dried and crushed it properly, tested a sample, and checked the layers' shells for a few weeks. Keep the oyster shell or a tested calcium source on the side as well, so that the birds can choose. Snail shell is a useful local option, but it is not a shortcut around the calcium plan.

Snails beside chickens: a diversification plan, not a Halaal Farms product

Halaal Farms is a day-old chicks hatchery in Opeikuma, Kasoa, and we do not sell snails. Snail farming is a diversification idea for a poultry farm, and it sits beside the chickens rather than in place of them. Treat it as a second enterprise with its own pens, its own buyers and its own records, and do not let it take the labour and money that the flock needs.

The safest way to start is with the poultry side first. Get the flock running well, keep the feed and the health records in order, and build the snail pen once the chicken routine is steady. While you plan your snail beds, we can stock your chicken side, and you can start from our order form or WhatsApp us on +233 24 915 1503. Our layer day-old chicks and broiler day-old chicks come in ventilated boxes of 50.

If you are building a larger poultry business and want to talk about how we work with farms, our partner page sets out the options. For current starting prices on the chicks, see our prices page, and read our about page for who we are.

Mistakes we see with home-made snail meal

The problems we hear about cluster around a few predictable errors.

• Feeding raw snails to the flock because the pen was full and the birds looked hungry.
• Drying the snails in the open on the ground, where flies, dust and rats reach them.
• Mixing whole-snail and meat-only batches in one bag, so nobody knows the calcium figure.
• Using snail shell straight from the pen without cleaning, drying or testing it.
• Putting snail meal into the chick feed in the first weeks, when the birds are least able to cope.
• Starting a snail pen next to the poultry house, then wondering why the birds keep finding snails.

Each of these is cheap to avoid. A written batch record and a rule that raw snail never goes to the birds will prevent most of them.

Checklist before you feed the first batch

Go through this list before any snail meal goes into a mash. A missing item is a reason to wait.

1. Confirm the species and the local rules on keeping and moving snails.
2. Build a shaded, covered pen with a sandy loam floor, a moist corner and a secure lid.
3. Purge, kill, cook or dry, grind and seal every batch, and record each step.
4. Decide whether the meal is meat-only or whole-snail, and write it on the bag.
5. Test each batch for dryness, grit, salt and mould, and get a lab analysis of the first one.
6. Start at about two per cent of the mash for adult birds, and keep it out of chick feed.
7. Keep raw snails away from the flock, and brief everyone who handles them on the hygiene rules.

Questions farmers ask