Assessment of Reference Values for Copper and Zinc in Blood Serum of First and Second Lactating Dairy Cows
Joint Authors
Rehage, Jürgen
Flachowsky, Gerhard
Meyer, Ulrich
Spolders, Markus
Höltershinken, Martin
Source
Veterinary Medicine International
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-03-30
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The influence of different copper and zinc contents in rations on blood serum concentrations in dependence on feeding (Groups A and B) and lactation (Lactation 1 and 2) was tested in a feeding trial with 60 German Holstein cows.
All animals received a diet based on maize and grass silage ad libitum.
30 cows received a concentrate supplemented with copper and zinc as recommended (Group A), whereas the other 30 animals were offered a concentrate with roughly double the amount of copper and zinc (Group B).
Blood samples were taken several times during the lactation to analyse serum concentrations of copper and zinc.
Copper serum concentration was influenced neither by the different feeding (11.7 μmol/L in Group A and 12.3 μmol/L in Group B) nor by the lactation (12.0 μmol/L in Lactation 1 and 12.1 μmol/L in Lactation 2).
Zinc serum concentration was significantly influenced as well as by feeding (14.1 μmol/L in Group B and 12.5 μmol/L in Group A) and lactation (14.2 μmol/L in the second lactation and 12.8 μmol/L for first lactating cows).
For an exact diagnosis of trace element supply, blood serum is a not qualified indicator; other sources (feedstuffs, liver, hair) must also be investigated.
American Psychological Association (APA)
Spolders, Markus& Höltershinken, Martin& Meyer, Ulrich& Rehage, Jürgen& Flachowsky, Gerhard. 2010. Assessment of Reference Values for Copper and Zinc in Blood Serum of First and Second Lactating Dairy Cows. Veterinary Medicine International،Vol. 2010, no. 2010, pp.1-8.
https://search.emarefa.net/detail/BIM-453534
Modern Language Association (MLA)
Spolders, Markus…[et al.]. Assessment of Reference Values for Copper and Zinc in Blood Serum of First and Second Lactating Dairy Cows. Veterinary Medicine International No. 2010 (2010), pp.1-8.
https://search.emarefa.net/detail/BIM-453534
American Medical Association (AMA)
Spolders, Markus& Höltershinken, Martin& Meyer, Ulrich& Rehage, Jürgen& Flachowsky, Gerhard. Assessment of Reference Values for Copper and Zinc in Blood Serum of First and Second Lactating Dairy Cows. Veterinary Medicine International. 2010. Vol. 2010, no. 2010, pp.1-8.
https://search.emarefa.net/detail/BIM-453534
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-453534