To optimize production and economic efficiency by cows consuming forages that are either prevalent or have potential to become prevalent in Arkansas.
To evaluate methods of improving forage utilization by ruminants.
ANSC 3152 Applied Animal Nutrition
ANSC 3151L Applied Animal Nutrition Lab
ANSC 5253 Advanced Livestock Production (with Dr. Rosenkrans)
ANSC 6253 Forage Ruminant relations with Dr. Philipp
PhD degree in 1986 from the University of Missouri – Research emphasis - Ruminant Nutrition
MS degree in 1983 from the Univiversity of Kentucky – Research emphasis - Ruminant Nutrition
BS degree in 1980 from the University of Tennessee – Major, Animal Science
Beck, P., B. Stewart, H. Gray, S. Gadberry, J. Tucker, D. Hubbell, J Butterbaugh, T. Hess, K. Coffey, and B. Rudolph. 2014. Effect of daily or alternate day distillers grains supplementation with or without monensin on performance of grazing calves. Professional Anim. Sci. 30:515-526.
Coblentz, W. K., R. E. Muck, M. A. Borchardt, S. K. Spencer, W. E. Jokela, M. G. Bertram, and K. P. Coffey. 2014. Effects of dairy slurry on silage fermentation characteristics and nutritive value of alfalfa. J. Dairy Sci. 97:7197-7211.
Bass, A.E., D. Philipp, K.P. Coffey, J.D. Caldwell, R.T. Rhein, A.N. Young, W.K. Coblentz. 2012. Chemical composition, intake by sheep, and in-situ disappearance in cannulated cows of bermudagrass hayed at two moisture concentrations and treated with a non-viable Lactobacillus-lactic acid preservative. Anim. Feed Sci. Technol. 117:43-51.
Powell, J.G., J.T. Richeson, E.B. Kegley, K.P. Coffey, G. F. Erf, A.H. Brown, Jr., W. Downum, D.T. Ensley, 2012. Immunologic, health, and growth responses of beef calves administered pentavalent modified-live virus respiratory vaccine in the presence of maternal antibody versus a traditional vaccination regimen. Bovine Practitioner 46(2):122-130.
Smith, S. A., J. D. Caldwell, M. P. Popp, K. P. Coffey, J. A. Jennings, M. C. Savin, and C. F. Rosenkrans, Jr. 2012. Tall fescue toxicosis mitigation strategies: comparisons of cow-calf returns. J. Agric. Appl. Econ. 44(4):577-592.
Caldwell, J. D., K. P. Coffey, W. K. Coblentz, J. A. Jennings, D. S. Hubbell, III, D. L. Kreider, M. L. Looper, D. L. Galloway, E. B. Kegley, and C. F. Rosenkrans, Jr. 2011. Weaning and post-weaning performance by fall-born beef calves weaned on different dates in the spring from Neotyphodium coenophialum-infected tall fescue pastures. Livestock Sci. 135:44-52.
Sales, M. A., M. J. Larson, S. T. Reiter, A. H. Brown, Jr., M. A. Brown, M. L. Looper, K. P. Coffey, and C. F. Rosenkrans, Jr. 2011. Effects of bovine cytochrome P450 single nucleotide polymorphism, forage type, and body condition on production traits in cattle. J. Anim. Physiol.Nutr.doi:10.1111/j.1439-0396.2011.01176.x
Francis, P. B., T. G. Montgomery, W. A. Whitworth, K. P. Coffey, and P. A. Beck. 2010. Annual ryegrass response to increased seeding rate and nitrogen fertilization. Online. Forage and Grazinglands doi:10.1094/FG-2010-0604-01-RS.
Kanani, J., D. Philipp, K. P. Coffey, E. B. Kegley, C. P. West , S. Gadberry, J. Jennings, A. N. Young, and R. Rhein. 2014. Comparison of acid-detergent lignin, alkaline-peroxide lignin and acid-detergent insoluble ash as internal markers for predicting fecal output and digestibility by cattle offered bermudagrass hays of varying nutrient composition. J. Anim. Sci. Biotechnol. 5:7
Kanani, J., D. Philipp, K. P. Coffey, A. N. Young, R. Rhein, and J. D. Caldwell. 2014. Nutritive value and in situ digestibility of pearl millet hay as affected by moisture concentration and bale sampling depth. Prof. Anim. Sci. 30:235-242.
Smith, S. A., M. P. Popp, D. Philipp, K. P. Coffey, E. E. Gbur, and T. G. Montgomery. 2014. Overseeding Bermudagrass Pastures with Ryegrass and Clovers: Estimating Partial Returns. J. Am. Soc. Farm Managers Rural Appraisers (108-123).
Caldwell, J. D. K. P. Coffey, J. A. Jennings, D. Philipp, A. N. Young, J. D. Tucker, D. S. Hubbell, III, T. Hess, M. L. Looper, C. P. West, M. C. Savin, M. P. Popp, D. L. Kreider, D. M. Hallford, and C. F. Rosenkrans, Jr.. 2013. Performance by spring and fall-calving cows grazing with full access, limited access, or no access to Neotyphodium coenophialum-infected fescue. J. Anim. Sci. 91:465-476.
Caldwell, J. D. D. Philipp, K. P. Coffey, L. A. Hardin, A. E. Bass, , A. N. Young, R. T. Rhein, and W. K. Coblentz. 2013. Intake and digestibility by sheep, in-situ disappearance in cannulated cows, and chemical composition of crabgrass hayed at two moisture concentrations and treated with a non-viable Lactobacillus-lactic acid additive. Anim. Feed Sci. Technol. 186: 27 – 35.
Coblentz, W. K., K. P. Coffey, A. N. Young, and M. G. Bertram. 2013. Storage characteristics, nutritive value, energy content, and in vivo digestibility of moist large-rectangular bales of alfalfa-orchardgrass hay treated with a propionic-acid based preservative. J. Dairy Sci. 96:2521-2535.
Mays, A. R., M. L. Looper, B. C. Williamson, K. P. Coffey, W. K. Coblentz, G. E. Aiken, and C. F. Rosenkrans, Jr.. 2013. Forage and breed effects of behavior and temperament of pregnant beef heifers. J. Anim. Sci. Biotechnol. 4(1): 20. doi:10.1186/2049-1891-4-20.
Montgomery, T. G., K. P. Coffey, W. K. Coblentz, P. B. Francis, , W. A. Whitworth, and K. J. Bryant, 2013. Growth-performance of heifers grazing wheat and ryegrass sod-seeded into bermudagrass pastures following different tillage intensities on different seeding dates. Online. Forage and Grazinglands doi:1094/FG-2013-0226-01-RS.