Jones-Hamilton Co. announces that Dr. Trisha Marsh Johnson has joined the company as Senior Manager, Veterinary Services. Johnson, who was part of the original team to launch PLT - Poultry Litter Treatment in 1994, will provide technical support to the Agricultural Division, including helping with the facilitation and execution of research initiatives.

In addition, Johnson will work with corporate veterinarians, animal welfare managers and technical reps on issues related to litter management and continue her efforts on poultry environmental quality, animal welfare, and governmental affairs at the state and federal levels. 

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Johnson received her doctorate in Veterinary Medicine from Oklahoma State University and her Masters of Avian Medicine form University of Georgia.