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- Title
Mineralisation of tubular bones is affected differently by low phosphorus supply in growing‐finishing pigs.
- Authors
Sørensen, Kristina U; Shiguetomi‐Medina, Juan M; Poulsen, Hanne D
- Abstract
BACKGROUND: Phosphorus (P) supply is essential for bone mineralisation. Reduced P may result in osteopenia, whereas excessive P may result in environmental impacts. The objective was to study the long‐term effect of three dietary P levels on net bone mineralisation in growing‐finishing pigs. Eighteen female pigs were fed low P (LP (4.1)), medium P (MP (6.2)) or high P (HP (8.9 g P kg−1 DM)) from 39.7 until 110 kg. Trabecular, cortical and overall bone mineral density (BMD), ash, calcium (Ca) and P were determined after slaughter. RESULTS: The LP diet generally reduced the BMD, ash, Ca and P in all bones, though all measures were markedly lowered in femur compared with humerus. The trabecular BMD in LP pigs was only different in the distal section compared to the MP‐fed pigs (P < 0.05). In addition, ash, Ca and P were lower in the proximal and distal sections. No significant effect of HP was seen. Conclusively, LP caused lower net bone mineralisation, mainly of femur. The trabecular tissue of the distal bones seems to be most metabolically active. CONCLUSIONS: The MP level was sufficient for net bone mineralisation. Femur is recommended for studying bone fragility whereas humerus seems useful to study increased P retention. © 2019 The Authors. Journal of the Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
- Subjects
PHOSPHORUS; OSTEOPENIA; BONE density; BONE marrow; CALCIFICATION
- Publication
Journal of the Science of Food & Agriculture, 2019, Vol 99, Issue 7, p3628
- ISSN
0022-5142
- Publication type
Article
- DOI
10.1002/jsfa.9583