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Effect of dietary phosphorus level on bone composition of dairy cows

Published online by Cambridge University Press:  23 November 2017

C.P. Ferris
Affiliation:
Agri-Food and Biosciences Institute, Hillsborough, United Kingdom
M.A. McCoy
Affiliation:
Department of Agriculture and Rural Development, Belfast, United Kingdom
D.J. Kilpatrick
Affiliation:
Agri-Food and Biosciences Institute, Newforge, United Kingdom
Corresponding
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Extract

There is increasing environmental pressure to reduce phosphorus (P) inputs to agricultural systems, including dairy systems. In a recent study (Ferris et al., 2007) dairy cow performance (milk yield, milk composition, food intake and fertility) was found to be unaffected when dairy cows were offered diets containing reduced levels of dietary phosphorus over a four-year period. However, if cows are offered diets containing inadequate dietary P levels for an extended period, bone P reserves may become depleted. The aim of this experiment was to examine the effect of reducing dietary P level on bone composition. Bone samples were collected from cows culled/removed from the study described by Ferris et al. (2007).

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Copyright © The British Society of Animal Science 2008

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References

Ferris, C.P., Patterson, D.C., McCoy, M.A. and Kilpatrick, D.J. (2007) In: High value grassland. Proceedings of the BGS/BES/BSAS Conference Occasional Symposium No. 38, British Grassland Society, pp. 141 – 146.Google Scholar

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