Estimating Supplemental Concentrate Needs
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Use this Supplemental Concentrate Needs Calculator to calculate the amount of a given supplement to meet requirements of metabolizable energy (ME) and metabolizable protein (MP) for different types of goats consuming various basal dietary forages. Enter the data into the table and
then click the Calculate Supplemental Concentrate Needs button. The results will be
displayed in the table at the bottom of the page.
Sources used in this calculation method are:
Luo, J., A. L. Goetsch, T. Sahlu, I. V. Nsahlai, Z. B. Johnson, J. E. Moore, M. L. Galyean, F. N. Owens, and C. L. Ferrell. 2003. Prediction of metabolizable energy requirements for maintenance and gain of preweaning, growing, and mature goats. Small Ruminant Research 53:231-252.
NRC. 2000. Nutrient Requirements of Beef Cattle, 2000 Update. National Academy Press, Washington, DC.
Nsahlai, I. V., A. L. Goetsch, J. Luo, Z. B. Johnson, J. E. Moore, T. Sahlu, C. L. Ferrell, M. L. Galyean, and F. N. Owens. 2004. Metabolizable energy requirements of lactating goats. Small Ruminant Research 53:253-273.
Sahlu, T., A. L. Goetsch, J. Luo, I. V. Nsahlai, J. E. Moore, M. L. Galyean, F. N. Owens, C. L. Ferrell, and Z. B. Johnson. 2004. Nutrient requirements of goats: developed equations, other considerations and future research to improve them. Small Ruminant Research 53:191-219.
UIP concentrations were derived from:
Preston, R. L. 2000. Typical composition of feeds for cattle and sheep. In: Beef 36(10), 10-20. Intertec Publ. Co. Overland Parks, KS.
For substitution and stimulation calculations, the following were
some of the sources reviewed:
Horn, G. W., and F. T. McCollum, III. 1987. Energy supplementation of grazing ruminants. In: M. B. Judkins (Editor) Grazing Livestock Nutrition Conference. pp 125-136. University of Wyoming, Laramie.
McCollum, F. T., III, and G. W. Horn. 1990. Protein supplementation of grazing livestock: A review. Prof. Anim. Sci. 6(2):1-16.
Moore, J. E., M. H. Brant, W. E. Kunkle, and D. I. Hopkins. 1998. Effects of supplementation on voluntary forage intake, diet digestibility, and animal performance. J. Anim. Sci. 77(Suppl. 2):122-135.