Put 65% bioefficacy to the test

Diverse trials have shown that 65 parts of DL methionine (DLM) can achieve the same animal performance as 100 parts of liquid methionine hydroxy analogue (MHA-FA) or its calcium salt (MHA‑Ca). With PROXYMet™, you can put this concept to the test under your own commercial production conditions.

PROXYMet™ contains approximately 65% DLM and 35% carrier, allowing you to replace MHA‑FA or MHA‑Ca 1:1 while keeping the rest of your feeding program unchanged.

Methionine and Cysteine are usually the first performance limiting amino acids in broiler feed and typically third limiting in swine diets. Meeting the animals’ requirements for these essential amino acids is therefore key to achieving optimal performance. Commonly, DL methionine (99% purity), an amino acid, or MHA-FA (88% purity), an organic acid, are supplemented to meet those requirements.

The chemical differences between the two compounds influence their nutritional value, expressed as relative bioavailability (RBV), which has been confirmed in previous scientific publications to be 65% for MHA-FA relative to DL-Met on a product-to-product basis.

PROXYMet™ and MHA-FA compared on a balanced scale, showing their respective composition.

One small trial but one giant leap for your methionine savings

To allow customers to easily test the 65% relative bioavailability (RBV) for themselves, Evonik developed PROXYMet™, a mixture of ~65% DL-methionine and ~35% carrier (calcium carbonate without any nutritional value), to replace MHA-FA/Ca on a product-to-product basis, one to one, while everything else stays the same: same feed composition, same diet specification, same feeding procedure.

Getting started is as easy as one, two, three

Contact your local Evonik representative, for implementation support, conduct a free trial, and see the savings with PROXYMet™.

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Start the trial

We’ll set up a test run in your commercial operation under real conditions, with PROXYMet™. Application: replace MHA-FA or MHA-Ca 1:1 with PROXYMet™.

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Compare performance

After completing the production cycle, animal performance of both treatments will be compared. No differences are expected.

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Go with MetAMINO®

Once the 65% bioefficacy has been demonstrated, Evonik will support the switch from liquid methionine hydroxy analogue to MetAMINO® to unlock the full savings potential.


Get in touch with our experts

Whether you run a feed mill or livestock operation, produce meat, dairy, or eggs – Evonik is here to support you. Wherever you're located and whatever your needs, our Evonik Animal Nutrition specialists are ready to assist you.

Contact us
Get in touch with the experts of Evonik Animal Nutrition.

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