Trace Minerals for California Beef Cattle
University of California, Cooperative Extension
Contra Costa County Mineral Data
Selenium
Two herds have been sampled and were adequate for whole blood Se at 0.14 and 0.17 ppm. No individual cattle were below 0.10 ppm. Herds were located in the Antioch area and Vasco Road area, between Brentwood and Livermore. Based on this limited sampling, cattle are not suspected Se deficient in Contra Costa County. This is supported with Class 3 data from the California Veterinary Diagnostic Lab (CVDL)
Copper
Very limited numbers (29) of samples submitted to the CVDL averaged 0.44 ppm serum Cu which suggests deficiency. Additional samples are needed.
Zinc
Very limited numbers (22) of samples submitted to the CVDL averaged 0.90 ppm serum Zn which suggests adequate levels of Zn. Additional samples are needed.
Phosphorus
Insufficient data are available for conclusions.
|
Blood samples* |
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|
WEIGHTED AVERAGES |
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|
Se |
Cu |
Zn |
P |
|
|
0.124 |
0.44 |
0.90 |
no data |
All Values |
|
na |
na |
na |
na |
Class 1 data only (random samples) |
|
0.156 |
no data |
no data |
no data |
Class 2 data only (field trials, selected herds) |
|
0.082 |
0.44 |
0.90 |
no data |
Class 3 data only (sick cattle) |
|
Number of Individuals (used in weighted averages) |
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|
Se |
Cu |
Zn |
P |
|
|
35 |
29 |
22 |
0 |
All Values |
|
0 |
0 |
0 |
0 |
Class 1 data only (random samples) |
|
20 |
0 |
0 |
0 |
Class 2 data only (field trials, selected herds) |
|
15 |
29 |
22 |
0 |
Class 3 data only (sick cattle) |
|
Number of Samples |
||||
|
Se |
Cu |
Zn |
P |
|
|
20 |
0 |
0 |
0 |
No. of Individuals |
|
1 |
1 |
1 |
0 |
No. of Herds |
|
15 |
29 |
22 |
0 |
No. of Individuals in herds |
|
35 |
29 |
22 |
0 |
Total number of individuals |
|
Lowest and Highest Values (Individuals only) |
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|
Se |
Cu |
Zn |
P |
|
|
0.1030 |
0.00 |
0.00 |
0 |
Lowest individual value |
|
0.212 |
0.00 |
0.00 |
0 |
Highest individual value |
|
* Se whole blood, Zn & P serum, Cu whole blood or serum |
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