HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Aubel, C. E. Articles by Peterson, W. J. Search for Related Content PubMed Articles by Aubel, C. E. Articles by Peterson, W. J.

The Minimum Calcium and Phosphorus Requirements of Growing Pigs^*

C. E. Aubel, J. S. Hughes and W. J. Peterson

Kansas Agricultural Experiment Station

Abstract

Previous studies at the Kansas Agricultural Experiment Station have shown the requirements of phosphorus for growing pigs to be between 0.27 and 0.30 percent when the ration contained liberal amounts of calcium and vitamin D, Aubel and Hughes (1) and Aubel, Hughes, and Lienhardt (2). The work of other investigators, Mitchell (8), Spildo (9), Axelsson (3), has given results which place their minimum levels in close agreement.

Many experiments, Dunlop (6), Bohstedt (4), Theiler and associates (10), and Spildo (9), have been conducted in which varying levels of calcium and phosphorus have been fed, and minimum levels of calcium have been assigned for growing pigs. The minimum amounts of calcium, however, have not been accurately determined when fed with the minimum level of phosphorus.

It is the purpose of this paper to provide some indication of the minimum requirements of calcium that is necessary to insure normal growth and bone and blood formation in young pigs where the phosphorus level is maintained at 0.3 percent and ample vitamin D is supplied.

^* Contribution No. 141 from the Department of Animal Husbandry, and No. 257 from the Department of Chemistry.

The authors wish to give credit to Prof. D. L. Mackintosh for assistance in slaughtering, and to Dr. L. M. Roderick for the pathological inspection of the carcasses of the pigs used in these tests.