Ranch Diagnostics Lab Publications
Transforming nutritional monitoring of free-grazing herbivores: four decades of progress in fecal near-infrared reflectance spectroscopy . Kidane, N. , Tolleson, D. 2026.
Estimating enteric methane emissions in grazing livestock: a practical approach with fecal NIRS/Nutbal System. Rodrigues, B., Dudak, J., Winkler, T., Tolleson, D. 2025.
Animal performance in small ruminant grazing systems on semi-arid savanna rangelands. Dudak, J., Campbell, E., Rodrigues, B., Wardlaw, K., Tolleson, D. 2025.
Hands on nutritional monitoring of grazing livestock as a teaching tool . Wardlaw, K., Tolleson, D., Dudak, J., Campbell, E., Rodrigues, B. 2025.
Effectiveness of portable near infrared spectroscopy for chute-side determination of hot-iron brand age in growing beef cattle. Tolleson, D., Walker, R., Winkler, T., McCoy, C., Johnson, B. 2025.
Fecal near infrared reflectance spectroscopy for indirect prediction of methane emissions from grazing cattle. Rodrigues, B. Fox, W., Dudak, J., Winkler, T., McCoy, C., Tolleson, D. 2024.
Evaluation of nutritional monitoring techniques for beef cattle grazing Texas gulf coast rangelands. Dudak, J., Rodrigues, B., Carey, C., Winkler, T., McCoy, C., Tolleson, D. 2024.
Nutritional monitoring of rangeland beef cattle in the Edwards Plateau of Texas using region-specific fecal near-infrared spectroscopy predictions of diet quality . D. R. Tolleson, W. E. Fox, W. E. Pinchak, J. P. Angerer. 2024.
State of the art and the future of faecal analysis using infrared spectroscopy. Kho, E. A., J. N. Fernandes, A. J. Tilbrook, G. P. Fox, M. T. Lord, A. C. Kotze, et al. 2023.
Detection of winter tick, Dermacentor albipictus , infestations using near infrared reflectance spectroscopy of bovine feces. Hays, S., Rich, B, Longnecker, M., Angerer, J., Tolleson, D., Teel, P. 2023.
Land degradation in rangeland ecosystems Angerer, J. P., Fox, W. E., Wolfe, J. E., Tolleson, D. R., Owen, T. 2023.
Can Low-Cost, Handheld Spectroscopy Tools Coupled with Remote Sensing Accurately Estimate Soil Organic Carbon in Semi-Arid Grazing Lands? Goodwin, D.J.; Kane, D.A.; Dhakal, K.; Covey, K.R.; Bettigole, et. al. 2022.
Bovine fecal chemistry changes with progression of Southern Cattle Tick, Rhipicephalus (Boophilus ) microplus (Acari: Ixodidae) infestation. Brian T. Rich, Donald B. Thomas, Michael T. Longnecker, Douglas R. Tolleson, Jay Angerer, et al. 2022.
The application of NIRS to determine animal physiological traits for wildlife management and conservation . Morgan, L. R., K. J. Marsh, D. R. Tolleson, K. N. Youngentob. 2021.
A production-scale evaluation of nutritional monitoring and decision support software for free-ranging cattle in an arid environment. Brooks (Turner), R., Tolleson, D., Ruyle, G., Faulkner, D. 2021.
Evaluation of non-invasive field-expedient techniques for determining the age of hot-iron brand burn scars in cattle. Tolleson, D. R. and D. W. Schafer. 2021.
The application of near infrared spectroscopy to predict fecal nitrogen and phosphorus in multiple ruminant herbivore species. Tolleson, D. R., and J. P. Angerer. 2020.
Application of growing degree day to predict diet crude protein in rangeland beef cows. Diaz, J., Tolleson, D., Angerer, J., Christian, A., Fox, W. 2020.
Growing degree day: A non-invasive remotely-sensed method to monitor diet crude protein in free-ranging cattle. Tolleson, D. R., J. P. Angerer, U. P. Kreuter, J. E. Sawyer. 2020.
Application of fecal near-infrared reflectance spectroscopy profiling for the prediction of diet nutritional characteristics and voluntary intake in beef cattle. J. R. Johnson, G. E. Carstens, S. D. Prince, K. H. Ominski, K. M. Wittenberg, M. Undi, et al. 2017.
Near Infrared Spectroscopy in Wildlife and Biodiversity . Carrie K. Vance, C. K. Tolleson, D. R., Kinoshita, K., Rodriguez, J., J. W. F. 2016.
Application of fecal near-infrared spectroscopy and nutritional balance software to monitor diet quality and body condition in beef cows grazing Arizona rangeland . Tolleson, D. R., Schafer, D. W. 2014.
The effects of a rotational cattle grazing system on elk diets in Arizona piñon–juniper rangeland. Tolleson, D., Halstead, L., Howery, L., Schafer, D., Prince, S. Banik, K. 2012.
Use of near infrared reflectance spectroscopy to discriminate between the physiological status of Giant Pandas. Wiedower, E., R. Hansen, A. Kouba, C. Vance, J. Stuth, D. Tolleson. 2012.
Precipitation timing and grazer performance in a tallgrass prairie. Craine, J. M., E. G. Towne, D. R. Tolleson, J. B. Nippert. 2012.
F orage Quality Photo Guide – Evaluating Diet Quality Selected by Grazing Beef Cattle Using Photographic Guidelines R. K. Lyons, R. V. Machen J. W. Stuth. 2011.
Shining Light on Manure Improves Livestock and Land Management. Walker, J., Tolleson, D., Byrns, S., Benge, P. 2010.
Climate change and cattle nutritional status. J. M. Craine, A. J. Elmore, K. C. Olson D. R. Tolleson. 2010.
Effect of previous experience on grazing patterns and diet selection of Brangus cattle in the Chihuahuan Desert. Bailey, D. W., M. G. Thomas, J. W. Walker, B. K. Witmore, D. R. Tolleson. 2010.
Effects of a lone star tick (Amblyomma americanum ) burden on performance and metabolic indicators in growing beef steers. D.R. Tolleson, P.D. Teel, J.W. Stuth, O.F. Strey, T.H. Welsh Jr. et al. 2010.
Use of a portable near-infrared spectrophotometer to predict nutrient composition of feces from holstein cattle fed high-concentrate diets. J. D. Allen, D. R. Tolleson, L. W. Hall, C. D. Burrows, G. Xie, G. C. Duff. 2010.
Use of near infrared spectroscopy to discriminate between and predict the nutrient composition of different species and parts of bamboo: Application for studying Giant Panda foraging ecology. Wiedower, E., R. Hansen, H. Bissell, R. Ouellette, A. Kouba, J. Stuth, B. Rude, D. Tolleson. 2009.
Fecal NIRS to predict diet quality in donkeys. Kidane, N. F., J. W. Stuth, D. R. Tolleson. 2008.
Fecal NIRS: detection of tick infestations in cattle and horses. Veterinary Parasitology . Tolleson, D. R., P. D. Teel, J. W. Stuth, O. F. Strey, T. H. Welsh, Jr, G. E. Carstens. 2007.
Faecal near infrared reflectance spectroscopy to predict diet quality for sheep . H. Li, D. Tolleson, J. Stuth, K. Bai, F. Mo, S. Kronberg. 2007.
Predicting diet quality of white-tailed deer via NIRS fecal profiling. Showers, S. E., D. R. Tolleson, J. W. Stuth, J. C. Kroll, B. H. Koerth. 2006.
Determination of sex and species in red and fallow deer by near infrared reflectance spectroscopy of the faeces. Tolleson, D. R., R. D. Randel, J. W. Stuth, D. A. Neuendorff. 2005.
Direct and indirect means of predicting forage quality through near infrared reflectance spectroscopy J Stuth, A Jama, D Tolleson, Field Crops Research, 2003.
Monitoring the nutritional status of grazing animals using near infrared spectroscopy. Stuth, J. W., and D. R. Tolleson. 2000.