The TMR360™ approach: A holistic approach to dairy TMR feed safety

Total Mixed Ration (TMR) is essential in modern ruminant nutrition, delivering balanced nutrients in every bite. However, its complexity also makes it vulnerable. With multiple ingredients and constant exposure during storage and feeding, TMR can become a source of mycotoxins, harmful bacteria, and spoilage organisms like yeasts and molds.

Feed safety is a major hidden risk in dairy production. Contaminants such as mycotoxins and microbes interact, amplifying their impact on animal health, performance, and profitability. The TMR360™ program addresses this by providing integrated analysis of mycotoxins and microbial contamination—including yeasts, molds, enterobacteria, and pathogens—to protect feed quality and farm performance.

Trouw Nutrition TMR360™ Program
Identify hidden risks, manage contamination, and improve feed quality and performance.

The TMR360™ program is a comprehensive feed risk assessment developed by Trouw Nutrition to evaluate and manage hygienic challenges that can compromise the safety and quality of dairy TMR.

It provides an integrated analysis of mycotoxins and microbial contamination, including yeasts, molds, Enterobacteriaceae, and pathogenic microorganisms. These contaminants can negatively affect feed stability, animal health, and performance—ultimately reducing income over feed costs and overall farm profitability.

By combining advanced laboratory diagnostics with expert technical
interpretation, TMR360 enables farmers, producers and nutritionists to:

  • Identify hidden feed safety risks posed by various contaminants
  • Understand the combined impact on animal health and productivity
  • Based on the results, tailored mitigation strategies are recommended
    to support feed quality, gut integrity, animal resilience and
    production efficiency.

Key Contaminants in TMR

Mycotoxins: The Invisible Threat 

Mycotoxins are toxic secondary metabolites produced by fungi, commonly present in silages, grains, and by-products.

  • Invisible and chemically stable, persisting even after molds are no longer visible.
  • Often undetected without laboratory analysis.
  • Typically responsible for chronic, subclinical effects rather than acute symptoms.

Negative effects of most common mycotoxins:

  •  Aflatoxins → liver damage, immune suppression, milk contamination
  • Deoxynivalenol (DON) → lameness, immunosuppression
  • Zearalenone (ZEN) → irregular heats, reduces conception rate, ovarian cysts, abortions
  • DON, T2 toxin → reduces milk production, mastitis, gastroenteritis, hemorrhagic bowel, reduces ruminal function and intestinal absorption, diarrhea, ketosis
  • DON, T2 toxin, Fumonisin (FUM) → feed refusal, reduced intake, reduced feed efficiency

Co-contamination is the rule, not the exception. Multiple mycotoxins frequently occur simultaneously, even at low concentrations, they may have a synergistic effect and thus cause problems, even at low concentrations. 

The Synergy Problem: When 2 + 2 = 7

Even when individual contaminants are below recognized risk thresholds, their combined effects can significantly amplify negative outcomes.

In lactating cows, a TMR containing a spectrum of low-level mycotoxins can markedly suppress milk production and reduce dry matter intake—often more severely than exposure to the same toxins individually.

At the same time, the presence of mycotoxins alongside spoilage organisms like yeasts and molds can impair rumen fermentation, reduce fiber digestibility, and compromise the rumen’s natural detoxification capacity.

Mycotoxins also affect more than digestion. They can disrupt gut barrier function and weaken immune responses, creating favorable conditions for harmful bacteria to grow and spread.

It’s not just the level of contamination—it’s the interaction. Small risks, when combined, can have a major impact on performance and profitability.