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AN168, a 4-page fact sheet by Jeffrey N. Carter, discusses the nutritional contributions of by-product feedstuffs and how to compare the economic values of different feedstuffs. Includes a table of protein and energy concentrations of selected feedstuffs. Published by the UF Department of Animal Science, February 2007.
AN168/AN168: Total Protein Requirement of Beef Cattle II: Protein Components (ufl.edu)
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Bodine, T.N., and H.T. Purvis. 2003. Effects of supplemental energy and/or degradable intake protein on performance, grazing behavior, intake, digestibility, and fecal and blood indices by beef steers grazed on dormant native tallgrass prarie. J. Anim. Sci. 81:304-317. https://doi.org/10.2527/2003.811304x
Bodine, T.N., H.T. Purvis, and D.L. Lalman. 2001 Effects of supplement type on animal performance, forage intake, digestion, and ruminal measurements of growing beef cattle. J. Anim. Sci. 79:1041-1051. https://doi.org/10.2527/2001.7941041x
Cochran, R.C., H.H. Köster, K.C. Olson, J.S. Heldt, C.P. Mathis, and B.C. Woods. 1998. Supplemental protein sources for grazing beef cattle. Pages 123-136 in Proc 9th Annu. Rumin. Nutr. Symp., Gainesville, FL.
Moore, J.E., and W.E. Kunkle. 1995. Improving forage supplementation programs for beef cattle. Pages 65-74 in Proc 6th Annu. Rumin. Nutr. Symp., Gainesville, FL.