Animal waste is often viewed as a problem that farmers have to clean up and dispose of. But with proper management, livestock manure and other farm waste can become a valuable source of income, fertilizer and energy.
Cattle, goats, sheep, pigs and poultry produce significant quantities of manure every day. Instead of allowing this waste to accumulate around animal houses, farmers can convert it into useful products such as compost, organic fertilizer, biogas and even insect-based animal feed.
For smallholder farmers, turning waste into a saleable product can create an additional income stream while reducing farm production costs.
1. Sell Well-Processed Manure
One of the simplest ways to make money from animal waste is selling manure to crop farmers.
Cow, goat, sheep, pig and poultry manure can provide organic matter and nutrients to agricultural soils. Farmers growing vegetables, fruits, flowers and other crops may be willing to purchase properly handled manure.
However, fresh manure is not always the best product to sell or apply directly to crops. Proper processing, storage and handling can improve its usefulness and reduce unpleasant odours and hygiene risks.
Farmers can package processed manure in sacks and sell it locally to gardeners, farmers and landscaping businesses.
2. Make and Sell Compost
Instead of selling raw manure, farmers can increase its value by turning it into compost.
Animal manure can be combined with suitable plant materials such as crop residues, dry grass and other organic materials. Under appropriate moisture, aeration and temperature conditions, the materials decompose into a more stable organic soil amendment.
Composting can transform waste that has little immediate commercial value into a product that can be marketed.
Farmers can sell compost in different package sizes depending on their target customers.
3. Produce organic fertilizer
Processed animal manure can also become part of a commercial organic fertilizer business.
Farmers can improve the value of manure through proper processing, screening, drying and packaging. Depending on local regulations and the intended claims on the product, additional ingredients may be used to create specialized soil amendments.
Before selling fertilizer commercially, farmers should check applicable agricultural and environmental requirements in their area.
The key is to focus on quality and consistency. Customers are more likely to return when they know what they are buying.
4. Produce biogas from livestock manure
Livestock manure can be used as feedstock in a biogas digester.
Biogas systems use anaerobic digestion to break down organic material and produce methane-rich gas that can be used for cooking or other energy applications.
For farmers with sufficient livestock numbers and regular manure production, biogas can reduce household or farm energy expenses.
This creates financial value in two ways: the farmer saves money on energy while also making use of manure that would otherwise become waste.
The material remaining after digestion, known as digestate, can also be used as a nutrient-rich agricultural input when properly managed.
5. Sell biogas digestate
A properly managed biogas system produces more than gas.
The remaining digestate can be used on farms as a fertilizer or soil amendment, subject to appropriate handling and crop-use considerations.
Farmers who operate larger biogas systems may potentially package or market processed digestate to nearby crop farmers.
This creates a circular system in which livestock waste produces energy and an agricultural input.
6. Use Poultry Manure in Crop Production
Poultry manure is often relatively nutrient-rich compared with many other livestock manures.
Instead of allowing it to pile up and create odour and environmental problems, poultry farmers can properly manage and use it in crop production.
Farmers can reduce expenditure on soil fertility inputs by incorporating suitable manure into their own fields.
If there is more manure than the farm requires, the surplus can potentially be sold to nearby crop farmers.
7. Use manure to reduce fertilizer costs
Farmers don’t necessarily have to sell animal waste to make money from it.
Using manure effectively on your own farm can reduce the amount of purchased fertilizer required, depending on soil conditions and crop nutrient requirements.
For example, a dairy farmer who also grows maize, vegetables or fodder can recycle manure back into crop production.
This creates an indirect financial benefit because money that would have been spent purchasing some inputs can remain within the farm business.
However, manure nutrient content varies, so farmers should avoid assuming that manure can completely replace mineral fertilizers in every situation. Soil testing and proper nutrient management are important.
8. Start vermicomposting
Another potential agribusiness is vermicomposting, which uses earthworms to help process suitable organic materials into worm castings.
The resulting vermicompost can be marketed to gardeners, nurseries, vegetable growers and other customers interested in organic soil amendments.
This can be particularly attractive for farmers who have regular access to animal manure and other organic materials.
The enterprise requires proper management of moisture, temperature, feedstock and worm populations.
9. Use manure for mushroom production
Some agricultural wastes can be incorporated into substrates used for mushroom production, depending on the mushroom species and production method.
Rather than treating every type of manure as a direct mushroom-growing material, farmers need to understand the specific substrate requirements of the mushroom they intend to produce.
With appropriate processing and hygiene, agricultural waste can therefore become part of a value-added mushroom enterprise.
10. Turn organic waste into insect protein
Livestock manure and other organic waste streams can potentially be used in insect farming systems, particularly black soldier fly production.
The insects can convert suitable organic materials into biomass. Their larvae can then be processed into protein-rich feed ingredients, subject to applicable feed-safety regulations.
The remaining frass can also have value as an agricultural soil amendment.
This creates an interesting circular agribusiness model:
Organic waste → insect larvae → animal feed ingredient + frass → crop production.
However, farmers must carefully control the materials fed to insects because feed safety is critical when the resulting products will enter livestock or food systems.
11. Make organic soil products for home gardeners
The market for gardening products can provide another opportunity.
Urban gardeners and homeowners may need small quantities of compost, manure-based soil amendments and other organic products.
Instead of selling manure only in large quantities, farmers can package suitable processed products into smaller bags for retail customers.
Good packaging, clear instructions and consistent quality can help distinguish the product from ordinary raw manure.
12. Improve waste collection and storage
Before animal waste can become a profitable product, farmers need an efficient collection system.
Manure should be collected regularly and stored in a suitable location where nutrients are not unnecessarily lost through runoff.
A good manure-management area should help prevent contamination of water sources and reduce odours and fly problems.
Proper storage also makes it easier to process manure consistently for composting, biogas or sale.
How to make animal waste more valuable
The biggest lesson is that raw waste usually has less value than a processed product.
A farmer can move up the value chain:
Fresh manure → composted manure → screened and packaged organic soil amendment.
Or:
Livestock manure → biogas → energy + digestate.
Or:
Organic waste → insect production → feed ingredient + frass.
The more useful, consistent and convenient the final product is, the greater its potential commercial value.
Important safety considerations
Farmers should not assume that all animal waste is automatically safe to sell or use.
Manure can contain pathogens, parasites, drug residues or other contaminants. Proper handling, processing and storage are therefore essential.
Farmers should also prevent manure from contaminating rivers, wells and other water sources.
When producing commercial fertilizer, animal feed or other regulated products, farmers should follow the relevant standards and regulatory requirements.
Animal waste doesn’t have to be a cost or environmental headache. It can become an additional source of income when properly collected, processed and marketed.
Farmers can earn from manure by selling compost, producing organic soil amendments, generating biogas, marketing digestate, using manure to reduce fertilizer expenses, producing vermicompost and exploring emerging businesses such as insect farming.
For livestock farmers, the opportunity is particularly attractive because the raw material is already being produced on the farm.
The smartest approach is to stop thinking of manure as something that must simply be thrown away and start asking:
“What valuable product can I create from it?”
With good management, yesterday’s waste can become tomorrow’s farm income.
Author: Moureen Koech
Moureen Koech is a passionate Digital Journalist, an adept Agribusiness Writer with a keen eye for news and an impactful story-teller,whose stories provide key value to Agripreneurs and stakeholders in the Agricultural sector
