Assessment of Reference Values for Copper and Zinc in Blood Serum of First and Second Lactating Dairy Cows
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....
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| Language: | English |
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Wiley
2010-01-01
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| Series: | Veterinary Medicine International |
| Online Access: | http://dx.doi.org/10.4061/2010/194656 |
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| author | Markus Spolders Martin Höltershinken Ulrich Meyer Jürgen Rehage Gerhard Flachowsky |
| author_facet | Markus Spolders Martin Höltershinken Ulrich Meyer Jürgen Rehage Gerhard Flachowsky |
| author_sort | Markus Spolders |
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| description | 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. |
| format | Article |
| id | doaj-art-f9ce61da19394b0798d7d6ee43a712d7 |
| institution | Kabale University |
| issn | 2042-0048 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Veterinary Medicine International |
| spelling | doaj-art-f9ce61da19394b0798d7d6ee43a712d72025-02-03T05:52:41ZengWileyVeterinary Medicine International2042-00482010-01-01201010.4061/2010/194656194656Assessment of Reference Values for Copper and Zinc in Blood Serum of First and Second Lactating Dairy CowsMarkus Spolders0Martin Höltershinken1Ulrich Meyer2Jürgen Rehage3Gerhard Flachowsky4Institute of Animal Nutrition, Friedrich-Loeffler-Institute (FLI)—Federal Research Institute for Animal Health, Bundesallee 50, 38116 Braunschweig, GermanyClinic for Cattle, University of Veterinary Medicine Hanover, Bischofsholer Damm 15, 30173 Hannover, GermanyInstitute of Animal Nutrition, Friedrich-Loeffler-Institute (FLI)—Federal Research Institute for Animal Health, Bundesallee 50, 38116 Braunschweig, GermanyClinic for Cattle, University of Veterinary Medicine Hanover, Bischofsholer Damm 15, 30173 Hannover, GermanyInstitute of Animal Nutrition, Friedrich-Loeffler-Institute (FLI)—Federal Research Institute for Animal Health, Bundesallee 50, 38116 Braunschweig, GermanyThe 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.http://dx.doi.org/10.4061/2010/194656 |
| spellingShingle | Markus Spolders Martin Höltershinken Ulrich Meyer Jürgen Rehage Gerhard Flachowsky Assessment of Reference Values for Copper and Zinc in Blood Serum of First and Second Lactating Dairy Cows Veterinary Medicine International |
| title | Assessment of Reference Values for Copper and Zinc in Blood Serum of First and Second Lactating Dairy Cows |
| title_full | Assessment of Reference Values for Copper and Zinc in Blood Serum of First and Second Lactating Dairy Cows |
| title_fullStr | Assessment of Reference Values for Copper and Zinc in Blood Serum of First and Second Lactating Dairy Cows |
| title_full_unstemmed | Assessment of Reference Values for Copper and Zinc in Blood Serum of First and Second Lactating Dairy Cows |
| title_short | Assessment of Reference Values for Copper and Zinc in Blood Serum of First and Second Lactating Dairy Cows |
| title_sort | assessment of reference values for copper and zinc in blood serum of first and second lactating dairy cows |
| url | http://dx.doi.org/10.4061/2010/194656 |
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