J. Anim Sci.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Williams, S. N.
Right arrow Articles by Warnick, A. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Williams, S. N.
Right arrow Articles by Warnick, A. C.

Journal of Animal Science, Vol 69, Issue 3 1232-1242, Copyright © 1991 by American Society of Animal Science

JOURNAL ARTICLE

Criteria to evaluate bone mineralization in cattle: I. Effect of dietary phosphorus on chemical, physical, and mechanical properties

S. N. Williams, L. A. Lawrence, L. R. McDowell, N. S. Wilkinson, P. W. Ferguson and A. C. Warnick
Anim. Sci. Dept., University of Florida, Gainesville 32611-0691.

Fourteen Angus heifers (210 +/- 6 kg initial BW) were allotted randomly to either a low P (LP: .12% P, DM basis) or an adequate P (AP: .20% P, DM basis) diet fed for 14 to 16 mo under drylot conditions on concrete floors to determine the influence of dietary P on chemical, physical, and mechanical properties of bone. Three weeks postpartum, after 14 to 16 mo on their diets, heifers were slaughtered and the right and left third metacarpals (McIII) were excised; soft tissue was removed and metacarpals were frozen in .9% saline. Metacarpals were subjected to a three-point flexure test using an Instron Testing Machine with a crossload speed of 50 mm/min to determine mechanical properties. Broken McIII were reassembled and a 2-cm section was removed at point of loading for determination of chemical and physical properties. Breaking load (BL) was greater (P less than .05) for McIII from the AP than for those from LP heifers (1,348 vs 1,179 kg). Breaking strength (BS) was greater (P less than .05) for AP than for LP heifers (202.5 vs 189.2 MPa). Animals receiving AP diets had greater (P less than .01) bone mineral content (12.6 vs 11.2 g/2-cm slice) and percentage of bone ash (68.0 vs 67.2%) than did LP animals. No differences (P greater than .10) were observed between treatment groups in Ca, P, or Mg percentage in bone ash. Circular, elliptical, radiographic, and planimeter area indices all were greater (P less than .05) in AP than in LP animals (1,048, 729, 1,069, and 570 vs 932, 660, 957, and 523 mm2, respectively). These data indicate that mechanical properties of bovine third metacarpals are sensitive to dietary P and reflect P status in the bovine. Mineral content of bone was highly correlated with its mechanical and physical properties.


This article has been cited by other articles:


Home page
 J DAIRY SCIHome page
N. M. Esser, P. C. Hoffman, W. K. Coblentz, M. W. Orth, and K. A. Weigel
The effect of dietary phosphorus on bone development in dairy heifers
J Dairy Sci, April 1, 2009; 92(4): 1741 - 1749.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
B. E. Keene, K. F. Knowlton, M. L. McGilliard, L. A. Lawrence, S. M. Nickols-Richardson, J. H. Wilson, A. M. Rutledge, L. R. McDowell, and M. E. Van Amburgh
Measures of Bone Mineral Content in Mature Dairy Cows
J Dairy Sci, November 1, 2004; 87(11): 3816 - 3825.
[Abstract] [Full Text] [PDF]

Home page
 Exp. Biol. Med.Home page
N. D. Turner, J. R. Knapp, F. M. Byers, and J. J. Kopchick
Physical and Mechanical Characteristics of Tibias from Transgenic Mice Expressing Mutant Bovine Growth Hormone Genes
Experimental Biology and Medicine, February 1, 2001; 226(2): 133 - 139.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1991 by the American Society of Animal Science.