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| 1967-71 | West Texas State Univ., Canyon, TX; major, Agriculture (Animal Science Option); minor, Biology; B.S. 1971. |
| 1971-73 | Oklahoma State Univ., Stillwater , OK ; major, Animal Science; M.S. 1973. |
| 1973-75 | Oklahoma State Univ., Stillwater , OK ; major, Animal Nutrition; minor, Biochemistry; Ph.D. 1975 |
| 1971-75 | Graduate Research Assistant, Oklahoma State Univ., Stillwater , OK |
| 1975-76 | Visiting Assistant Professor, Department of Animal Science, Texas Tech Univ., Lubbock, TX |
| 1976-89 | Research Animal Scientist (Nutrition), BRD Unit, USDA, ARS, Conservation and Production Research Laboratory, Bushland , TX |
| 1989-95 | Research Leader, BRD Unit, USDA, ARS, Bushland , TX |
| 1995-present | Research Animal Scientist (Nutrition)/Lead Scientist, REMM Unit, USDA-ARS, Bushland , TX . |
American Registry of Professional Animal Scientists (Served on Editorial Board 1995-1997)
American Society of Animal Science (Served on Editorial Board 1986-1988 and as Section Editor 1999-2002)
Diplomate, American College of Animal Nutrition.
American Society for Nutritional Sciences
lains Nutrition Council (President 1988-1989).
1. Decrease potential environmental hazards associated with animal feeding operations
2. Develop techniques to reduce emissions and transport of ammonia from beef cattle feedyards using improved nutritional, and management practices.
3. Determine and improve the feeding value of byproduct feeds produced from sorghum-based ethanol production.
4. Develop methods to improve the utilization of and decrease the excretion of nitrogen, and phosphorus by feedlot cattle
5) Develop practical feeding and management practices which will decrease the quantity and improve the quality (i.e. increase N:P ratio) of feedlot manure without adversely affecting beef cattle production efficiency.