EM•1® for Livestock
Looking for guidance specific to your operation — cattle, dairy, poultry, swine, or another species? Contact our technical team.
This page covers livestock applications of EM•1® across cattle, dairy, poultry, swine, and other animal production systems. For related applications, see EM•1® for Composting (manure and waste transformation) and EM•1® for Wastewater (effluent and lagoon management).
EM•1® Microbial Inoculant, manufactured by EMRO USA under authorization from EM Research Organization, Inc. (Japan), is used by livestock producers as part of broader feed, water, and farm-environment management programs. This page explains what EM•1® is, where producers typically apply it, and what independent research has actually measured. Contact EMRO USA for volume pricing and program support.
What EM•1® Is
EM•1® Microbial Inoculant is a liquid co-culture of naturally occurring microorganisms — lactic acid bacteria, yeasts, and photosynthetic bacteria — produced through a fermentation process developed by EM Research Organization, Inc. (Japan). Read more about what EM Technology® is and how it works.
Where Livestock Producers Apply EM•1®
Producers incorporate EM•1® at several points in an operation, depending on their management practices and existing program:
Feed program applications
Incorporated into feed management practices where permitted by the operation's program and applicable regulations.
Drinking water
Added to water systems alongside existing water management practices.
Silage & forage
Applied at ensiling as part of a forage preservation program.
Corral & facility treatment
Applied to corrals, drainage areas, and waste accumulation zones.
Manure composting
Used in composting programs — see EM•1® for Composting.
Effluent / lagoon management
Applied to waste holding systems — see EM•1® for Wastewater.
Independent Research
In 2003, Feed Innovation Services conducted an in-vitro rumen fermentation study in cooperation with Wageningen University's Department of Animal Nutrition (Netherlands), commissioned by EM Agriton BV. The study evaluated the effect of EM-treated grass silage on volatile fatty acid (VFA) production and methane generation in a laboratory rumen fermentation model.
What the study measured
Grass silage treated with EM showed a measured shift in volatile fatty acid profile — higher propionic acid and lower acetic acid production — compared to untreated control silage in this laboratory setting. Calculated and measured methane production also decreased. The study was conducted in vitro; it did not measure live-animal outcomes such as milk yield, milk protein, or growth.
Source: Feed Innovation Services / Wageningen University, Department of Animal Nutrition, commissioned by EM Agriton BV (Netherlands), April 2003. In-vitro laboratory study. Ask our technical team for the full study documentation.
EM•1® Across Livestock Species
Producers across the following species incorporate EM•1® into their operations. Application points vary by species and system — contact our team to discuss your specific operation:
| Species | Common Application Points |
|---|---|
| Beef cattle | Feed-management programs, water systems, corral/facility application, manure management |
| Dairy cattle | Feed-management programs, water systems, silage application, facility environment |
| Poultry | Feed-management programs, water systems, litter/house environment |
| Swine | Feed-management programs, water systems, confinement facility environment |
| Small ruminants | Feed-management programs, water systems, manure management |
| Horses & equine | Feed-management programs, water systems, stable environment, manure management |
Certified Organic Operations
A note on organic compliance
EM•1® is OMRI Listed® for specified uses in organic production. Organic livestock operations should verify product use, rates, and application methods with their certifying agent before use — OMRI listing applies to the specific product and use category, and does not by itself validate any production or performance outcome.
"EMRO USA is the sole authorized manufacturer of EM Technology® products in the United States and Canada, operating under direct agreement with EM Research Organization, Inc. (Japan) since 2002."
Related EM Technology® Applications
EM•1® for Composting
Manure and farm organic waste composting.
EM•1® for Wastewater
Effluent lagoon and waste system management.
EM•1® for Agriculture
An overview of EM•1® across commercial crop production.
EM•1® for Aquaculture
EM•1® in shrimp and fish production systems.
What Is EM Technology®?
The science behind Effective Microorganisms®.
Our Certifications
USDA Organic, OMRI Listed®, and more.
Questions About Your Operation?
Whether you manage a commercial feedlot, dairy operation, poultry or swine facility, or an integrated farm, our technical team can talk through how EM•1® fits into your existing program.
📧 orders@emrousa.com
📞 520-492-2010
Mon–Fri, 9:00 AM – 5:00 PM MST
EM®, Effective Microorganisms®, EM Technology®, and EM•1® are trademarks of EM Research Organization, Inc. (Japan) and/or EMRO USA, Inc. OMRI Listed® is a registered trademark of the Organic Materials Review Institute.