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 Muehlenbein, E. L.
Right arrow Articles by Johnson, A. B.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Muehlenbein, E. L.
Right arrow Articles by Johnson, A. B.

Journal of Animal Science, Vol 79, Issue 7 1650-1659, Copyright © 2001 by American Society of Animal Science

JOURNAL ARTICLE

Effects of inorganic and organic copper supplemented to first-calf cows on cow reproduction and calf health and performance

E. L. Muehlenbein, D. R. Brink, G. H. Deutscher, M. P. Carlson and A. B. Johnson
Department of Animal Science, University of Nebraska, Lincoln 68583-0908, USA.

Two experiments were conducted to determine whether the supplementation of Cu in the organic or inorganic form to 2-yr-old cows, before and after calving, affects reproduction rate, calf health and performance, passive transfer of immunoglobulin, or liver and serum Cu concentrations compared with unsupplemented controls. Cows (n = 75 in 1997; n = 120 in 1998) were randomly assigned by estimated calving date and body condition score to one of three treatments: 1) Control, control; 2) Inorganic, inorganic Cu supplement (200 mg Cu from CuSO4); 3) Organic, organic Cu supplement (100 mg Cu from AvailaCu). In 1998, a fourth treatment was added; 4) CU-ZN, organic Cu and Zn (400 mg Zn from AvailaZn in the Organic diet). Cows were fed a hay-based diet and individually fed supplements for approximately 45 d before and 60 d after calving (approximately January 15 to May 15 each year). Liver biopsies were obtained from cows before supplementation began, and from cows and calves at 10 and 30 d after calving. Blood samples were obtained from both cows and calves at calving, and colostrum samples were collected for IgG and mineral content. Cow liver Cu concentrations before supplementation began were 58 mg/kg in 1997 and 40 mg/kg (DM basis) in 1998. By 10 d after calving, liver Cu concentrations of Control cows had decreased (P < 0.05) to 24 mg/kg (Cu deficient) in both years, whereas liver Cu concentrations of Cu-supplemented cows increased (P < 0.05) in both years. Calf liver Cu concentrations at 10 d of age were similar (P > 0.10) for all treatment groups. No differences (P > 0.10) were found in colostrum Cu concentrations, or in calf health among treatments. No differences (P > 0.10) were found in cow BW change, calf serum Cu concentrations, calf weaning weights, or in cow 60-d pregnancy rates among treatments in either year. In 1998, cows in the Organic group had higher (P < 0.05) 30-d pregnancy rate than Control cows. Neither serum samples nor placental tissue were reliable indicators of Cu status in cows. Feeding supplemental Cu (either inorganic, organic, or organic with extra Zn) to cows with liver Cu concentrations of approximately 50 mg/kg before calving did not improve cow 60-d pregnancy rates or the health and performance of their calves when compared with unsupplemented cows.


This article has been cited by other articles:


Home page
 J ANIM SCIHome page
J. E. Sprinkle, S. P. Cuneo, H. M. Frederick, R. M. Enns, D. W. Schafer, G. E. Carstens, S. B. Daugherty, T. H. Noon, B. M. Rickert, and C. Reggiardo
Effects of a long-acting, trace mineral, reticulorumen bolus on range cow productivity and trace mineral profiles
J Anim Sci, June 1, 2006; 84(6): 1439 - 1453.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
J. K. Ahola, T. E. Engle, and P. D. Burns
Effect of copper status, supplementation, and source on pituitary responsiveness to exogenous gonadotropin-releasing hormone in ovariectomized beef cows
J Anim Sci, August 1, 2005; 83(8): 1812 - 1823.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
U. Bernabucci, B. Ronchi, N. Lacetera, and A. Nardone
Influence of Body Condition Score on Relationships Between Metabolic Status and Oxidative Stress in Periparturient Dairy Cows
J Dairy Sci, June 1, 2005; 88(6): 2017 - 2026.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
J. A. Vanegas, J. Reynolds, and E. R. Atwill
Effects of an Injectable Trace Mineral Supplement on First-Service Conception Rate of Dairy Cows
J Dairy Sci, November 1, 2004; 87(11): 3665 - 3671.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
J. K. Ahola, D. S. Baker, P. D. Burns, R. G. Mortimer, R. M. Enns, J. C. Whittier, T. W. Geary, and T. E. Engle
Effect of copper, zinc, and manganese supplementation and source on reproduction, mineral status, and performance in grazing beef cattle over a two-year period
J Anim Sci, August 1, 2004; 82(8): 2375 - 2383.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2001 by the American Society of Animal Science.