| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Journal of Animal Science, Vol 72, Issue 10 2722-2727, Copyright © 1994 by American Society of Animal Science
JOURNAL ARTICLE |
G. P. Gengelbach, J. D. Ward and J. W. Spears
Department of Animal Science, North Carolina State University, Raleigh 27695-7621.
A study was conducted to determine the effects of copper (Cu) depletion by feeding diets high in either iron (Fe) or molybdenum (Mo) on performance and Cu status of beef cows and calves. Thirty-eight 2-yr-old beef heifers, entering the last one-third of gestation, were randomly assigned by expected calving date to one of four diets: 1) control (CON; corn silage-soybean meal-based diet, 4 mg of Cu/kg), 2) control + 600 mg of Fe (as FeCO3)/kg, 3) control + 5 mg of Mo (as Na2MoO4)/kg, and 4) control + 10 mg of Cu (as CuSO4)/kg. From d 28 until after the end of the calving season (d 125), heifers receiving supplemental Cu had higher (P < .05) plasma Cu levels and ceruloplasmin activities than heifers fed the other diets. By d 224, plasma Cu concentrations of heifers fed the CON and Fe diets had increased to levels similar to those observed in the Cu-supplemented heifers, whereas the Mo heifers exhibited the lowest (P < .05) plasma Cu of the four treatments from d 168 through the remainder of the 280-d trial. Plasma Cu concentrations and ceruloplasmin activities were greater (P < .05) in Cu-supplemented than in non-Cu-supplemented calves (diets 1, 2, and 3) from d 168 onward, and the Fe- and Mo-supplemented calves did not differ in either measurement at any time during the trial. Rate of gain did not differ among calves fed the CON, Fe- or Cu-supplemented diets, whereas the Mo-supplemented calves gained at a much slower (P < .05) rate.(ABSTRACT TRUNCATED AT 250 WORDS)
This article has been cited by other articles:
|
|
 |
|
  S. L. Hansen, N. Trakooljul, H.-C. Liu, A. J. Moeser, and J. W. Spears Iron Transporters Are Differentially Regulated by Dietary Iron, and Modifications Are Associated with Changes in Manganese Metabolism in Young Pigs J. Nutr., August 1, 2009; 139(8): 1474 - 1479. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S. L. Hansen and J. W. Spears Bioaccessibility of iron from soil is increased by silage fermentation J Dairy Sci, June 1, 2009; 92(6): 2896 - 2905. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 L. R. Legleiter, J. W. Spears, and H. C. Liu Copper deficiency in the young bovine results in dramatic decreases in brain copper concentration but does not alter brain prion protein biology J Anim Sci, November 1, 2008; 86(11): 3069 - 3078. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. L. Hansen, P. Schlegel, L. R. Legleiter, K. E. Lloyd, and J. W. Spears Bioavailability of copper from copper glycinate in steers fed high dietary sulfur and molybdenum J Anim Sci, January 1, 2008; 86(1): 173 - 179. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. R. Legleiter, H. C. Liu, K. E. Lloyd, S. L. Hansen, R. S. Fry, and J. W. Spears Exposure to low dietary copper or low copper coupled with high dietary manganese for one year does not alter brain prion protein characteristics in the mature cow J Anim Sci, November 1, 2007; 85(11): 2895 - 2903. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. R. Legleiter and J. W. Spears Plasma diamine oxidase: A biomarker of copper deficiency in the bovine J Anim Sci, September 1, 2007; 85(9): 2198 - 2204. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. L. Hansen, J. W. Spears, K. E. Lloyd, and C. S. Whisnant Growth, reproductive performance, and manganese status of heifers fed varying concentrations of manganese J Anim Sci, December 1, 2006; 84(12): 3375 - 3380. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. L. Hansen, J. W. Spears, K. E. Lloyd, and C. S. Whisnant Feeding a low manganese diet to heifers during gestation impairs fetal growth and development. J Dairy Sci, November 1, 2006; 89(11): 4305 - 4311. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. E. Tiffany, V. Fellner, and J. W. Spears Influence of cobalt concentration on vitamin B12 production and fermentation of mixed ruminal microorganisms grown in continuous culture flow-through fermentors J Anim Sci, March 1, 2006; 84(3): 635 - 640. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. G. Solaiman, C. E. Shoemaker, W. R. Jones, and C. R. Kerth The effects of high levels of supplemental copper on the serum lipid profile, carcass traits, and carcass composition of goat kids J Anim Sci, January 1, 2006; 84(1): 171 - 177. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. E. Tiffany and J. W. Spears Differential responses to dietary cobalt in finishing steers fed corn-versus barley-based diets J Anim Sci, November 1, 2005; 83(11): 2580 - 2589. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. R. Legleiter, J. W. Spears, and K. E. Lloyd Influence of dietary manganese on performance, lipid metabolism, and carcass composition of growing and finishing steers J Anim Sci, October 1, 2005; 83(10): 2434 - 2439. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. L. Wright and J. W. Spears Effect of Zinc Source and Dietary Level on Zinc Metabolism in Holstein Calves J Dairy Sci, April 1, 2004; 87(4): 1085 - 1091. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. E. Tiffany, J. W. Spears, L. Xi, and J. Horton Influence of dietary cobalt source and concentration on performance, vitamin B12 status, and ruminal and plasma metabolites in growing and finishing steers J Anim Sci, December 1, 2003; 81(12): 3151 - 3159. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. A. Mullis, J. W. Spears, and R. L. McCraw Estimated copper requirements of Angus and Simmental heifers J Anim Sci, April 1, 2003; 81(4): 865 - 873. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. W. Spears and E. B. Kegley Effect of zinc source (zinc oxide vs zinc proteinate) and level on performance, carcass characteristics, and immune response of growing and finishing steers J Anim Sci, October 1, 2002; 80(10): 2747 - 2752. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
