Lallemand announces Castex as new President, General Manager

Castex to succeed Le Treut
calendar icon 5 December 2023
clock icon 2 minute read

On Feb. 1, 2024, Mathieu Castex, Ph.D., will succeed Yannig Le Treut, DVM, as President & General Manager of Lallemand Animal Nutrition. Dr. Castex comes to the position after serving as the company’s Director of Research & Development since 2014.

Dr. Le Treut successfully led Lallemand Animal Nutrition since 2012. To ensure a seamless transition, he will take on the role of Senior Vice President & Special Advisor at the Lallemand Group level, while supporting Lallemand Animal Nutrition’s management team and leadership transition over the next several years.

“I am extremely pleased that, in Mathieu, we have a leader with a strong scientific background, aligned with the product offerings we have for our customers around the world. In addition, his product management and commercial experience make him an excellent choice to build on the success Yannig achieved over the past decade leading the Lallemand Animal Nutrition team” said Bill Nankervis, Executive VP and COO of the Lallemand Group. “I’m looking forward to continuing to work closely with Yannig in his new capacity.”

Dr. Castex adds, “I am delighted to be able to continue to channel my fervor for microbiology, animals and animal breeding in the service of the Animal Nutrition business unit. I am honored to be entrusted with succeeding Yannig in leading this remarkable team and business, which he played an integral role in establishing and strengthening. I am confident that our specialized teams — when coupled with science-based products, innovation, and our dedication to customer satisfaction — represent a winning formula for success for us, our partners and our industry.”

Dr. Castex joined Lallemand Animal Nutrition in 2009 as the product manager leading the yeast derivatives and aquaculture portfolio. He graduated from AgrosParisTech in Paris, France, now part of the University Paris-Saclay, and holds a doctoral degree in microbiology and physiology of nutrition. Dr. Castex’s experience includes research and development, product management and business development within animal nutrition and health.

Laurence Williams

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