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Grazingland Animal Nutrition Lab

Laboratory offering decision support for better nutritional management of livestock and stewardship of natural resources

  • GAN Lab: Grazingland Animal Nutrition Laboratory
    • GAN Lab Services
    • FNIRS/NUTBAL Sampling Contracts for USDA/NRCS Customers
    • Pricing and Sampling Information
    • Additional Information on Nutritional Monitoring
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  • Decision Support Systems
    • NIRS: Near infrared reflectance spectroscopy
    • NUTBAL: Livestock nutrition balance decision support system
    • FRAMS: Forage risk assessment management system
    • BRASS: Burning risk assessment support system
    • LMIS: Livestock marketing information system
    • PestMan: Brush and weed management decisions for Texas and New Mexico
    • PHYGROW: Phyto mass growth model
  • Projects
    • USDA Forest Service BRASS: Burning Risk Advisory Support System
    • Mali Livestock and Pastoralist Initiative
    • Mongolia LEWS: Livestock Early Warning System
    • East Africa LEWS: Livestock Early Warning System
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Doug Tolleson, Ph.D.

Headshot of Doug Tolleson

Director
Email:  douglas.tolleson@ag.tamu.edu
Phone:  (325) 387-3168

Doug Tolleson, Ph.D., is associate professor and rangeland scientist at the Texas A&M AgriLife Research station in Sonora. He is also the director of the Grazingland and Animal Nutrition Lab. Prior to his current position, Tolleson was an extension specialist and research scientist at the University of Arizona V Bar V Ranch Experiment Station near Camp Verde, Arizona, from 2008 to 2016. Tolleson conducts research on rangeland vegetation monitoring to inform grazing and fire management efforts and employs near infrared reflectance spectroscopy to study grazing animal nutrition and physiology.

A member of
Texas A&M AgriLife

Texas A&M AgriLife Extension Service | Texas A&M AgriLife Research | Texas A&M Forest Service | Texas A&M AgriLife Veterinary Medical Diagnostic Lab | College of Agriculture & Life Sciences

Grazingland Animal Nutrition Lab

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