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 Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Harmon, B. G. Articles by Baker, D. H. Search for Related Content PubMed PubMed Citation Articles by Harmon, B. G. Articles by Baker, D. H.

Effect of Source and Level of Dietary Phosphorus on Structure and Composition of Turbinate and Long Bones

University of Illinois, Urbana-Champaign

Abstract

One-hundred-twenty pigs averaging 30 kg were used in two experiments to study the effect of level and source of phosphorus on turbinate and long bones. Dicalcium phosphate or soft phosphate was added to a cornsoybean meal diet containing 0.34% phosphorus to provide either 0.50 or 0.74% dietary phosphorus. Pigs were slaughtered at 90 kg for serum and bone analysis. Weight gain, serum phosphorus and turbinate and rib ash, calcium and phosphorus values increased with increases in dietary phosphorus, the responses plateauing at 0.50% phosphorus for each of these criteria, Dicalcium phosphate supported more rapid gains than soft phosphate although rib and turbinate ash values were similar for the two sources. Trace mineral composition of turbinates was influenced by level and source of phosphorus. The difference of greatest magnitude was the fluoride content, which was greatly increased in pigs receiving soft phosphate. Histological observations showed no differences related to treatment except that the invasion of turbinates by cartilage was greatest in pigs receiving the phosphorus-deficient diet.