Proper Processing is Key to Pathogen Control in Recycled Manure Solids Bedding on Dairy Farms

Oct 24, 2025

Bedding choice is a crucial factor in both cow comfort and udder health, and dairy farms in the Midwest are increasingly turning to recycled manure solids (RMS) as a cost-effective and readily available option. But because RMS originates from manure, questions remain about whether it can harbor mastitis-causing bacteria or other pathogens. A new cross-sectional study in JDS Communications, published by Elsevier, explores how different processing methods affect pathogen levels, giving producers clearer insight into the benefits and limitations of RMS bedding.

“Recycled manure solids, obtained by separating the solids and liquids from manure slurry with and without further steps, are increasingly popular as bedding because they are comfortable for cows, economical, widely available, and support circular waste management systems that can help farms boost sustainability,” explained Felipe Peña-Mosca, DVM, MSc, PhD, postdoctoral associate at Cornell University (Ithaca, NY) and lead author on the study. “But questions remain about their potential to harbor bacteria that affect udder health and spread pathogens when RMS are shared between farms.”

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Video: What Does 20 MILLION Hogs a Year Look Like?

?? The Multi-Plant System Processing 20 Million Hogs Annually in the Midwest JBS USA operates multiple large-scale pork processing facilities across the Midwest, including major plants in Iowa, Minnesota, and Indiana. Combined, these facilities have the capacity to process approximately 20 million hogs annually.

Each plant operates high-speed automated slaughter systems capable of processing up to 20,000 head per day, followed by fabrication lines that break carcasses into primals, sub-primals, and case-ready retail products.

Hog procurement is coordinated through electronic marketing platforms that connect regional contract finishing operations and independent producers to plant demand schedules. This digital procurement system allows for steady supply flow and scheduling efficiency across multiple facilities.

Processing plants incorporate comprehensive food safety systems, including pathogen intervention technologies, rapid chilling processes, and integrated cold-chain management. USDA inspection is embedded throughout the harvest and fabrication stages to ensure regulatory compliance and product integrity. Finished pork products — from bulk primals to retail-ready packaged cuts — are distributed through coordinated logistics networks serving domestic and export markets.