Grazingland Animal Nutrition Laboratory

05/08/2026

04/22/2026

Happy Earth Day from the GAN Lab! 🌎🌱🫶🏼 Our work focuses on creating practical, science-driven solutions that make livestock and wildlife management more efficient and environmentally responsible. From reducing chemical waste to improving sustainability, every step forward matters. Move sustainability forward & Partner with the GAN Lab today!

04/03/2026

Amazing day at the GAN Lab!

We had the pleasure of hosting a group from for our "Train the Trainer" workshop as part of a new collaboration that’s just getting started.

Great conversations, great people, and lots of ideas ahead. This is just the beginning!

Thank you all for visiting Texas and spending the day with us!

03/20/2026

We are headed to the Cattle Raisers Convention & Expo 2026 in Fort Worth (March 27-29)! 🤠

Come visit us at BOOTH #847 to learn how nutritional monitoring can support smarter grazing and livestock management decisions.

Looking forward to connecting with you!

03/09/2026

03/05/2026

Yesterday we welcomed a group of cattle producers from Mexico to Texas A&M AgriLife.

The visit began at the Texas A&M Animal Reproductive Biotechnology Center (Repro Lab) at the RELLIS Campus, where the group learned about current work in reproductive technologies and their applications in livestock production.

The group then continued their visit at the Grazingland Animal Nutrition Lab, where lab manager Dr. Barbara Rodrigues shared how f***l NIRS technology is used to monitor the nutritional status of grazing animals and support better management decisions in rangeland systems.

They also attended a session at the Department of Rangeland, Wildlife and Fisheries Management, where Dr. David Matarrita-Cascante presented on “Changing Rural Areas and Agrifood Systems in Texas”, and GAN Lab director, Dr. Doug Tolleson discussed “Nutritional Monitoring of Grazing Animals” and its applications for grazing management.

It was a great opportunity to exchange ideas about grazing management, rangeland stewardship, and the role of science and technology in supporting producers.

Thank you to everyone involved in organizing the visit.

¡Muchas gracias por su visita! Fue un gusto recibirlos y compartir ideas sobre producción ganadera y manejo de pastizales. Esperamos que esta sea la primera de muchas oportunidades para seguir colaborando.

02/23/2026

We respectfully acknowledge the University of Arizona is on the land and territories of Indigenous peoples. Today, Arizona is home to 22 federally recognized tribes, with Tucson being home to the O’odham and the Yaqui. The university strives to build sustainable relationships with sovereign Native...

02/23/2026

Sonora Research Station 110th Anniversary Celebration

02/18/2026

Congratulations to Christopher McCoy, for successfully defending his master’s thesis!

His research focused on developing soil near-infrared spectroscopy calibrations for West Texas Aridisols and North Texas Panhandle Alfisols and Mollisols to support rapid and accurate soil analysis across diverse rangeland systems.

We are proud of his hard work and excited to see the continued development and application of this research.

02/14/2026

Love is in the range this Valentine’s Day 💘

From cattle to bison, sheep to wildlife, we’re wild about what we do and the producers and partners we serve.

Thank you for trusting the GAN Lab to support your herds, your land, and your decisions.

Happy Valentine’s Day from all of us 🐂🐐🦬