Rendering vs. Cremation vs. Burial: Best Dead Livestock Disposal Options

Understanding Your Livestock Disposal Options

When livestock dies, Illinois and Wisconsin law requires that carcasses be disposed of promptly and through approved methods. Farm owners have several options, each with different cost implications, practical requirements, and suitability depending on the circumstances of death. Understanding the trade-offs helps you make the right decision for your farm, your values, and your budget.

Rendering: The Environmentally Preferred Option

What Rendering Is

Rendering is an industrial process that converts animal carcasses into useful commercial products. The raw material — in this case, a deceased livestock animal — is processed at high heat, separating proteins, fats, and water. The resulting products include:

• Meat and bone meal (used in animal feed and fertilizers)
• Tallow and lard (used in lubricants, soaps, and biodiesel)
• Pet food ingredients
• Pharmaceutical and cosmetic precursors

Virtually nothing goes to waste. Rendering is widely regarded by environmental scientists as the most sustainable large-scale animal disposal method available.

How It Works

A licensed hauler transports the carcass to a rendering facility. The facility processes the animal using a continuous cooking system. The process is regulated and operates under health and environmental permits. Rendering facilities in the Midwest serve large geographic areas and accept various types of livestock.

Cost

Rendering is typically the least expensive disposal option — and in some cases, it is effectively free or even provides a small payment to the farmer. This is because rendering facilities can resell the processed products, and the value of those products offsets transport costs. However, the market price paid for carcasses fluctuates, and fees vs. credits depend on the specific animal and current market conditions.

Critical Limitation: Euthanized Animals Cannot Be Rendered

This is the most important restriction to know: animals euthanized with pentobarbital — the standard drug used for horse euthanasia — cannot be sent to rendering facilities. Pentobarbital persists in the animal's tissue and can contaminate rendered products, posing risks to animals and humans who consume or use them. Rendering facilities will reject euthanized animals and the USDA actively monitors this restriction.

Additionally, animals with certain reportable diseases may not be eligible for rendering depending on the specific diagnosis.

Cremation: The Personal Choice

What It Is

Livestock cremation works similarly to pet cremation — the animal is incinerated at a licensed cremation facility, reducing it to ash. There are two types:

• Private cremation: The animal is cremated individually and you receive their ashes. This is meaningful for beloved horses and companion animals.
• Communal cremation: Multiple animals are cremated together and ashes are not returned to individual owners. This is less expensive and appropriate for production animals or when ash return is not important.

Cost

Cremation is generally the most expensive disposal option. For a horse, private cremation at a licensed facility can cost several hundred to over a thousand dollars or more, in addition to transport costs. Communal cremation is substantially less expensive. The cost varies by facility and by the size of the animal.

Best For

Cremation is the best choice when the animal was a beloved companion (especially horses), when ash return is desired for memorialization, or when the animal was euthanized with pentobarbital and rendering is not an option.

Burial: The Traditional Option

Requirements in Illinois

On-site burial is legal in Illinois subject to strict setback requirements:

• 150 feet from any stream, drainage ditch, river, or pond
• 300 feet from any well or groundwater source
• Minimum burial depth of 4+ feet of soil cover above the carcass
• Cannot be in flood-prone areas or areas with high water tables

Requirements in Wisconsin

Wisconsin burial requirements under ATCP 10 require:

• 100 feet from any water source or well
• Minimum 3 feet of soil cover above the carcass
• No burial in wetlands, floodplains, or areas with shallow groundwater

Practical Considerations

Burial requires heavy equipment — a backhoe or excavator — to dig a pit large enough for a large animal. The labor and equipment rental cost can be significant. In winter, frozen ground may make burial impossible. In areas with heavy clay soil or drainage tiles, compliance with setback requirements may be difficult.

Burial keeps the animal on your property, which some owners find meaningful. However, it is generally the most labor-intensive option and may not be practical for many Northern Illinois and Southern Wisconsin farms.

Other Methods: Landfill and Composting

Some permitted landfills accept livestock carcasses, though this is relatively uncommon and often more expensive than rendering. Contact your county solid waste authority to determine if this is an option in your area.

Livestock mortality composting is regulated under both Illinois and Wisconsin law. On-farm composting requires specific site design, ongoing management, and monitoring. It is more commonly used by large cattle operations that generate carcasses regularly. The Illinois Department of Agriculture and Wisconsin DATCP can provide guidance on composting requirements.

Which Option Is Right for Your Situation?

• Sudden death, healthy production cattle or hog: Rendering is typically the best choice — often the most affordable and environmentally sound.
• Euthanized horse or beloved companion animal: Cremation (private or communal) is usually the appropriate choice. Rendering is not an option due to pentobarbital.
• Rural farm with ample land, away from water: Burial may be feasible if you have the equipment and the setbacks are met.
• Horse that died of natural causes (no euthanasia drugs): Rendering or burial are both options; rendering is typically easiest.
• Small farm animal (goat, sheep, small pig): Burial is more manageable for smaller animals; rendering may also be available.

We Can Help You Decide

When you call Brier Hill Livestock Removal, we'll discuss your situation and help you understand which disposal options are available and appropriate. We're not here to upsell you — we're here to help you make the right decision for your farm and your animal.

Call us any time at (815) 543-1891. We serve all of Northern Illinois and Southern Wisconsin with prompt, licensed, compassionate service.