Karen E. Lloyd

Spears, J. W., Lloyd, K. E., Pickworth, C. A., Huang, Y. L., Krafka, K., Hyda, J., & Grimes, J. L. (2019). Chromium propionate in broilers: human food and broiler safety. Poultry Science, 98(12), 6579–6585. https://doi.org/10.3382/ps/pez444

Budde, A. M., Sellins, K., Lloyd, K. E., Wagner, J. J., Heldt, J. S., Spears, J. W., & Engle, T. E. (2019). Effect of zinc source and concentration and chromium supplementation on performance and carcass characteristics in feedlot steers. JOURNAL OF ANIMAL SCIENCE, 97(3), 1286–1295. https://doi.org/10.1093/jas/skz016

Spears, J. W., Lloyd, K. E., & Krafka, K. (2017). Chromium concentrations in ruminant feed ingredients. JOURNAL OF DAIRY SCIENCE, 100(5), 3584–3590. https://doi.org/10.3168/jds.2016-12153

Gill, J. C., Lloyd, K. E., Bowman, M., Siciliano, P. D., & Pratt-Phillips, S. E. (2017). Relationships Among Digestible Energy Intake, Body Weight, and Body Condition in Mature Idle Horses. JOURNAL OF EQUINE VETERINARY SCIENCE, 54, 32–36. https://doi.org/10.1016/j.jevs.2017.02.017

Brooks, M. A., Grimes, J. L., Lloyd, K. E., Krafka, K., Lamptey, A., & Spears, J. W. (2016). Chromium propionate in broilers: effect on insulin sensitivity. POULTRY SCIENCE, 95(5), 1096–1104. https://doi.org/10.3382/ps/pew018

Huang, Y. L., Ashwell, M. S., Fry, R. S., Lloyd, K. E., Flowers, W. L., & Spears, J. W. (2015, June). Effect of dietary copper amount and source on copper metabolism and oxidative stress of weanling pigs in short-term feeding. JOURNAL OF ANIMAL SCIENCE, Vol. 93, pp. 2948–2955. https://doi.org/10.2527/jas.2014-8082

Huang, Y., Yang, J., Xiao, F., Lloyd, K., & Lin, X. (2015). Effects of Supplemental Chromium Source and Concentration on Growth Performance, Carcass Traits, and Meat Quality of Broilers Under Heat Stress Conditions. Biological Trace Element Research, 170(1), 216–223. https://doi.org/10.1007/s12011-015-0443-z

Zheng, C., Huang, Y., Xiao, F., Lin, X., & Lloyd, K. (2015). Effects of Supplemental Chromium Source and Concentration on Growth, Carcass Characteristics, and Serum Lipid Parameters of Broilers Reared Under Normal Conditions. Biological Trace Element Research, 169(2), 352–358. https://doi.org/10.1007/s12011-015-0419-z

Brooks, M. A., Grimes, J. L., Lloyd, K. E., Verissimo, S., & Spears, J. W. (2013). Bioavailability in chicks of zinc from zinc propionate. JOURNAL OF APPLIED POULTRY RESEARCH, 22(2), 153–159. https://doi.org/10.3382/japr.2012-00525

Fry, R. S., Spears, J. W., Lloyd, K. E., O'Nan, A. T., & Ashwell, M. S. (2013). Effect of dietary copper and breed on gene products involved in copper acquisition, distribution, and use in Angus and Simmental cows and fetuses. JOURNAL OF ANIMAL SCIENCE, 91(2), 861–871. https://doi.org/10.2527/jas.2011-3888

Fry, R. S., Ashwell, M. S., Lloyd, K. E., O'Nan, A. T., Flowers, W. L., Stewart, K. R., & Spears, J. W. (2012). Amount and source of dietary copper affects small intestine morphology, duodenal lipid peroxidation, hepatic oxidative stress, and mRNA expression of hepatic copper regulatory proteins in weanling pigs. JOURNAL OF ANIMAL SCIENCE, 90(9), 3112–3119. https://doi.org/10.2527/jas.2011-4403

Spears, J. W., Whisnant, C. S., Huntington, G. B., Lloyd, K. E., Fry, R. S., Krafka, K., … Hyda, J. (2012). Chromium propionate enhances insulin sensitivity in growing cattle. JOURNAL OF DAIRY SCIENCE, 95(4), 2037–2045. https://doi.org/10.3168/jds.2011-4845

Brooks, M. A., Grimes, J. L., Lloyd, K. E., Valdez, F., & Spears, J. W. (2012). Relative bioavailability in chicks of manganese from manganese propionate. JOURNAL OF APPLIED POULTRY RESEARCH, 21(1), 126–130. https://doi.org/10.3382/japr.2011-00331

Fry, R. S., Brown, T. T., Jr., Lloyd, K. E., Hansen, S. L., Legleiter, L. R., Robarge, W. P., & Spears, J. W. (2011). Effect of dietary boron on physiological responses in growing steers inoculated with bovine herpesvirus type-1. RESEARCH IN VETERINARY SCIENCE, 90(1), 78–83. https://doi.org/10.1016/j.rvsc.2010.04.016

Spears, J. W., Lloyd, K. E., & Fry, R. S. (2011). Tolerance of cattle to increased dietary sulfur and effect of dietary cation-anion balance. JOURNAL OF ANIMAL SCIENCE, 89(8), 2502–2509. https://doi.org/10.2527/jas.2010-3265

Fry, R. S., Lloyd, K. E., Jacobi, S. K., Siciliano, P. D., Robarge, W. P., & Spears, J. W. (2010). Effect of dietary boron on immune function in growing beef steers*. JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION, 94(3), 273–279. https://doi.org/10.1111/j.1439-0396.2008.00906.x

Lloyd, K. E., Fellner, V., McLeod, S. J., Fry, R. S., Krafka, K., Lamptey, A., & Spears, J. W. (2010). Effects of supplementing dairy cows with chromium propionate on milk and tissue chromium concentrations. JOURNAL OF DAIRY SCIENCE, 93(10), 4774–4780. https://doi.org/10.3168/jds.2010-3198

Hansen, S. L., Ashwell, M. S., Legleiter, L. R., Fry, R. S., Lloyd, K. E., & Spears, J. W. (2009). The addition of high manganese to a copper-deficient diet further depresses copper status and growth of cattle. BRITISH JOURNAL OF NUTRITION, 101(7), 1068–1078. https://doi.org/10.1017/S0007114508057589

Hansen, S. L., Schlegel, P., Legleiter, L. R., Lloyd, K. E., & Spears, J. W. (2008). Bioavailability of copper from copper glycinate in steers fed high dietary sulfur and molybdenum. JOURNAL OF ANIMAL SCIENCE, 86(1), 173–179. https://doi.org/10.2527/jas.2006-814

Legleiter, L. R., Liu, H. C., Lloyd, K. E., Hansen, S. L., Fry, R. S., & Spears, J. W. (2007). Exposure to low dietary copper or low copper coupled with high dietary manganese for one year does not alter brain prion protein characteristics in the mature cow. JOURNAL OF ANIMAL SCIENCE, 85(11), 2895–2903. https://doi.org/10.2527/jas.2007-0215

Stahlhut, H. S., Whisnant, C. S., Lloyd, K. E., Baird, E. J., Legleiter, L. R., Hansen, S. L., & Spears, J. W. (2006). Effect of chromium supplementation and copper status on glucose and lipid metabolism in Angus and Simmental beef cows. ANIMAL FEED SCIENCE AND TECHNOLOGY, 128(3-4), 253–265. https://doi.org/10.1016/j.anifeedsci.2005.11.002

Hansen, S. L., Spears, J. W., Lloyd, K. E., & Whisnant, C. S. (2006). Feeding a low manganese diet to heifers during gestation impairs fetal growth and development. JOURNAL OF DAIRY SCIENCE, 89(11), 4305–4311. https://doi.org/10.3168/jds.S0022-0302(06)72477-8

Hansen, S. L., Spears, J. W., Lloyd, K. E., & Whisnant, C. S. (2006). Growth, reproductive performance, and manganese status of heifers fed varying concentrations of manganese. JOURNAL OF ANIMAL SCIENCE, 84(12), 3375–3380. https://doi.org/10.2527/jas.2005-667

Legleiter, L. R., Spears, J. W., & Lloyd, K. E. (2005). Influence of dietary manganese on performance, lipid metabolism, and carcass composition of growing and finishing steers. Journal of Animal Science, 83(10), 2434–2439. https://doi.org/10.2527/2005.83102434x

Spears, J. W., Schlegel, P., Seal, M. C., & Lloyd, K. E. (2004). Bioavailability of zinc from zinc sulfate and different organic zinc sources and their effects on ruminal volatile fatty acid proportions. LIVESTOCK PRODUCTION SCIENCE, 90(2-3), 211–217. https://doi.org/10.1016/j.livprodsci.2004.05.001

Creech, B. L., Spears, J. W., Flowers, W. L., Hill, G. M., Lloyd, K. E., Armstrong, T. A., & Engle, T. E. (2004). Effect of dietary trace mineral concentration and source (inorganic vs. chelated) on performance, mineral status, and fecal mineral excretion in pigs from weaning through finishing. Journal of Animal Science, 82(7), 2140–2147. https://doi.org/10.2527/2004.8272140x

Spears, J. W., Engle, T. E., Platter, W. R., Lloyd, K. E., Belk, K. E., & Horton, J. (2003). Effects of high dietary calcium propionate and dietary cation-anion balance on calcium metabolism and longissimus muscle tenderness in finishing steers. Professional Animal Scientists, 19(6), 424. https://doi.org/10.15232/s1080-7446(15)31461-3

Roberts, E. S., Heugten, E., Lloyd, K., Almond, G. W., & Spears, J. W. (2002). Dietary zinc effects on growth performance and immune response of endotoxemic growing pigs. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES, 15(10), 1496–1501. https://doi.org/10.5713/ajas.2002.1496

Armstrong, T. A., Spears, J. W., & Lloyd, K. E. (2001). Inflammatory response, growth, and thyroid hormone concentrations are affected by long-term boron supplementationin gilts. Journal of Animal Science, 79(6), 1549–1556. https://doi.org/10.2527/2001.7961549x

Engle, T. E., Spears, J. W., Brown, T. T., & Lloyd, K. E. (1999). Effect of breed (Angus Vs Simmental) on immune function and response to a disease challenge in stressed steers and preweaned calves. Journal of Animal Science, 77(3), 516–521. https://doi.org/10.2527/1999.773516x