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The influence of dietary concentration of calcium and phosphorus on their retention in the body of the growing pig

Published online by Cambridge University Press:  27 March 2009

A. J. Mudd ,
W. C. Smith  and
D. G. Armstrong
A. J. Mudd
Affiliation:
School of Agriculture, University of Newcastle upon Tyne
W. C. Smith
Affiliation:
School of Agriculture, University of Newcastle upon Tyne
D. G. Armstrong
Affiliation:
School of Agriculture, University of Newcastle upon Tyne
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Summary

Three gilts and three castrated males weighing 23 kg live weight were given four semi-synthetic diets containing increasing amounts of Ca and P. The Ca and P contents (% dry basis) and Ca:P ratios for the four diets were A, 0·30, 0·38, 1:1·27; B, 0·58, 0·68, 1:1·17; C, 0·94, 1·13, l:l·20; D, 1·16, 1·47, 1:1·27. Each animal was slaughtered at 41 kg live weight and the whole body contents of Ca and P determined. Six pigs were slaughtered at 23 kg live weight and their bodies also analysed for Ca and P contents. Dietary concentration of Ca and P did not influence rate or efficiency of live weight gain nor carcass characteristics. Net retention of Ca and P increased with increasing dietary concentration of these elements. Analyses of isolated femurs suggested that optimal mineralization of the bone was associated with a net retention of 8·2 g Ca/kg live weight gain. The data were used to calculate a value of 32·9 mg/kg live weight/day for the endogenous loss of Ca in pigs of 23–41 kg body weight. The values have been used to compute a mineral requirement of dietary calcium which is in excellent agreement with that derived from estimates in the literature.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 73 , Issue 2 , October 1969 , pp. 189 - 196
Copyright
Copyright © Cambridge University Press 1969

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References

Agricultural Research Council (1967). The nutrient requirements of farm livestock. No. 3. Pigs. London: H.M.S.O.Google Scholar
Blair, R. & Benzie, D. (1964). The effect of level of dietary calcium and phosphorus on skeletal development in the young pig to 25 lb. liveweight. Br. J. Nutr. 18, 91–101.CrossRefGoogle Scholar
Gran, F. C. (1960). Studies on calcium and strontium-90 metabolism in rats. Oslo: Oslo University Press.Google ScholarPubMed
Hansard, S. L., Lyke, W. A. & Crowder, H. M. (1961). Absorption, excretion and utilization of calcium by swine. J. Anim. Sci. 20, 292–6.Google Scholar
Miller, E. R., Ullrey, D. E., Zutaut, C. L., Baltzer, B. V., Schmidt, D. A., Hoefer, J. A. & Luecke, R. W. (1962). Calcium requirement of the baby pig. J. Nutr. 77, 7–17.Google Scholar
Miller, E. R., Ullrey, D. E., Zutaut, C. L., Hoefer, J. A. & Luecke, R. W. (1964). Mineral balance studies with the baby pig; effects of dietary phosphorus level upon calcium and phosphorus balance. J. Nutr. 82, 111–4.CrossRefGoogle ScholarPubMed
Mudd, A. J., Smith, W. C & Armstrong, D. G. (1967). Studies on the retention of calcium and phosphorus by the growing pig. Anim. Prod. 9, 271.Google Scholar
Mudd, A. J., Smith, W. C. & Armstrong, D. G. (1969). The retention of certain minerals in pigs from birth to 90 kg live weight. J. agric. Sci., Camb. 73, 181–7.CrossRefGoogle Scholar
Oslage, H. J. (1964). Body composition and accretion of matter by growing fattening pigs. V. Mineral content and accretion of minerals by growing fattening pigs. Z. Tierphysiol. Tierernähr. Futtermittelk. 19, 330–57.CrossRefGoogle Scholar
Snedecor, G. W. (1956). Statistical Methods, 5th edn.Ames, Iowa: Iowa State University Press.Google Scholar