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The effect of dietary intake of phosphorus on true absorption and excretion of phosphorus in Brazilian Santa Ines sheep

  • D. M. Vitti (a1), I. C. S. Bueno (a1), J. C. da Silva Filho (a2), T. Soares (a1), R. Patino Pardo (a3), M. E A Nasser (a4), E. de Almeida (a1), S. Sallam (a4) and V. Nascimento Filho (a1)...

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Phosphorus (P) is an essential nutrient in livestock production, involved in most metabolic processes in the body, and with an impact on bone development and growth. Diet supplementation with P can improve productivity, but at excess levels the P utilization can be low, and the high P excretion will lead to environmental pollution (Tamminga, 2003). P supplementation also adds substantially to the cost of feed. Using the isotopic dilution technique (Vitti et al., 2000), we have studied the effect of different P levels in diet on P absorption and excretion in Brazilian sheep, and identified the level at which true P absorption saturates.

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NRC, 2006. Nutrient Requirements of Small Ruminants. Academic Press, Washington, DC.
Tamminga, S., 2003. Pollution due to nutrient losses and its control in European animal production. Livestock Production Science, 84: 101–111.
Vitti, D.M.S.S.; Kebreab, E.; Lopes, J.B.; Abdalla, A.L.; Carvalhos, F.F.R.; Resende, K.T.; Crompton, L.A.; France, J. 2000. Journal of Animal Science, 78: 2706–2712.

The effect of dietary intake of phosphorus on true absorption and excretion of phosphorus in Brazilian Santa Ines sheep

  • D. M. Vitti (a1), I. C. S. Bueno (a1), J. C. da Silva Filho (a2), T. Soares (a1), R. Patino Pardo (a3), M. E A Nasser (a4), E. de Almeida (a1), S. Sallam (a4) and V. Nascimento Filho (a1)...

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