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Mepron®, the concentrated and rumen-stable methionine source for dairy cows, is crucial for achieving the correct amino acid balance in dairy rations. When utilized alongside expert support, Mepron® allows you to embrace the ideal protein feed approach. By supplementing with Mepron®, you can enhance the profitability of your dairy farm while also focusing on managing food safety, animal welfare, and environmental concerns.

Ingredient Name: DL-Methionine

Functions: Amino Acid

Features: Balanced Amino Acids Profile, Free-Flowing

Labeling Claims: Dust-free, Non-Toxic

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Ingredient Name
Animal Feed & Nutrition Functions

Features & Benefits

Labeling Claims
Animal Feed & Nutrition Features
Key Attributes
  • Supplementing with Mepron® improves your competitiveness through lower feed costs without compromising performance.
  • Mepron® optimizes protein utilization and increases the milk yield of cows.
  • Mepron® contributes to improved herd health and fertility of dairy cows due to optimized nutrient supply and by lowering the nitrogen load in the metabolism.
  • Mepron® is virtually dust-free, offers excellent performance during conveying and has a perfect flowability. It can be included in premixes, mineral mixes and feed mixes by any technical process.
  • Supplementing with Mepron® reduces environmental pollution by lowering nitrogen excretion.
  • Mepron® significantly increases profitability, while enabling sustainable farming.

Applications & Uses

Animal Species

Mepron® is produced by coating methionine with a protective film.

The Mepron® pellet (1.8 x 3 – 4 mm) containing DL-Methionine is virtually dust-free, has a very high durability and a low loss on drying (max. 2 %). Its technical properties result in excellent performance during conveying and in perfect flowability. Mepron® can be mixed homogeneously. The rate of rumen protection is not affected when mixed with potentially abrasive components (mineral mixes), when handled at extremely high ambient temperature or when subjected to low pH (silage). The mechanical stress during transport with common conveyers (screw, elevator, pneumatic transport) has no effects on the rumen protection of Mepron®. Pelletizing of mixtures containing Mepron® is not recommended.

Direction for Use

Mepron® is the rumen-protected source of methionine for ruminants with time-dependent release. Methionine is the amino acid most commonly limiting dairy cows’ performance. Mepron® is included into dairy rations to achieve a better amino acid balance. Typical inclusion ranges from 10 to 20 g per cow per day, depending on performance and ration composition.


Physical Form
White, free flowing cylindrical granulate
Insoluble in
Water (at 25°C)
Typical Properties
ValueUnitsTest Method / Conditions
Bulk Density700 - 720kg/m³-
Particle Size1.8*3-⁴mm-
DL-Methioninemin. 85.0%-
Ash Contentmax. 2.0%-
Loss on Dryingmax. 2.0%-

Regulatory & Compliance

Regulatory Affairs

Mepron® is approved for use in all ruminant species according to European feed law and is labeled accordingly. Mepron® is not subject to dangerous goods regulations.

Technical Details & Test Data

Nutritional Matrix
Rumen bypass 80 %
Digestibility 90 %
Crude protein (N x 6.25) 50 %
Crude fiber 3.0 %
Crude fat 1.0 %
Crude ash 2.0 %
NEL 8.1 [MJ/kg]
1.94 [Mcal/kg]
0.88 [Mcal/lb]

Safety & Health

Safety and Enviroment

Mepron® can be handled safely. According to EU chemicals legislation, it is non-toxic, and, if correctly handled, it does not irritate the skin and mucous membranes. Skin sensitization has never been reported, and is unlikely to occur. Accordingly, it is not classified as a hazardous chemical. The usual regulations for safety and hygiene should be followed.

Packaging & Availability

Packaging Type
Packaging Information
  • Paper bag 2-ply + one line PE-coated, 25 kg net.
  • Bulk bag / FIBC, 1000 kg net.

Storage & Handling

Shelf Life
3 years
Storage Condition

Mepron® should be kept cool and dry in unopened original packaging. Storage conditions of 5°-30 °C and 20-75 % rel. humidity are recommended. Under these conditions, stability and active content are guaranteed for 3 years from manufacturing date on. The manufacturing date is part of the lot number on the package label.