Rumen-Protected Methionine
Rumen-Protected Methionine for animal feed, supplied from audited Chinese mills with a full specification and certificate of analysis on enquiry.
About this ingredient

In ruminants, unprotected methionine is degraded by rumen microbes before it reaches the small intestine, so most of what you pay for is lost. Rumen protected methionine is coated or matrix bound so that it passes the rumen intact and releases in the abomasum.
It is used mainly in high yielding dairy cows, where metabolisable methionine supply limits milk protein output. The figures worth asking for are rumen bypass rate and intestinal availability, since a product can score well on one and poorly on the other.
Where it is used
- High yielding dairy rations, for milk protein yield
- Transition cow diets
- Beef finishing, where amino acid supply limits gain
Formulation note
Compare rumen protected methionine on metabolisable methionine delivered, calculated from rumen bypass and intestinal release. Use it where your ration model shows methionine limiting milk protein.
Specification on request
We have not published a full specification sheet for this ingredient yet. Send us your tonnage and destination port and we will return the complete specification, a recent certificate of analysis and a delivered price.
Buying Rumen-Protected Methionine from China
- Minimum order: one container.
- Terms: FOB Chinese port or CIF your destination port.
- Packing: standard export bags, with jumbo bags or custom packing on request.
- Shelf life: 12 months when stored dry and sealed.
- Quality: every lot is tested before shipment, and SGS, Intertek or CCIC inspection can be arranged at the load port.
- Documents: certificate of analysis, commercial invoice, packing list, bill of lading and certificate of origin, plus health or phytosanitary certificates where your import rules require them.
Frequently asked questions
Why does methionine need rumen protection?
Rumen microbes break down unprotected methionine before it reaches the small intestine, so little of it is absorbed by the cow.
Which cows benefit from rumen protected methionine?
High yielding dairy cows and transition cows, where methionine supply limits milk protein production.
What figures should I compare between products?
Compare rumen bypass rate, intestinal digestibility and the resulting amount of absorbable methionine per dose.
Other proteins in the range

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Tell us the product, the tonnage and the port
Send those three things and we come back with a delivered price, a full specification and a recent certificate of analysis. Usually the same working day.