Calcium and Phosphorus Requirements
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Calcium (Ca) and phosphorus (P) requirements of goats are based on recommendations of NRC (2007). These requirements and calculations are described below, with abbreviations, assumptions, and units defined first.
Sources used in this calculation method are:
Luo, J., A. L. Goetsch, I. V. Nsahlai, J. E. Moore, M. L. Galyean, Z. B. Johnson, T. Sahlu, C. L. Ferrell, C. L., and F. N. Owens. 2004. Prediction of voluntary feed intake by lactating, Angora, growing and mature goats. Small Rum. Res. 53:357-378.
NRC. 2007. Nutrient Requirements of Small Ruminants. National Academy Press. Washington, DC.
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. Energy and protein requirements of goats: developed equations, other considerations, and future research to improve them. Small Rum. Res. 53:191-220.