Trace Minerals for California Beef Cattle
University of California, Cooperative Extension
Tehama County Mineral Data
Selenium
Eleven herds (total of 110 head) were randomly sampled for selenium levels. The overall whole blood selenium level was 0.0488 ppm, which is generally considered deficient. Individual animal and location differences may result in deficiency in some cattle. Therefore, testing at individual locations would better define specific conditions.
Copper
Eleven herds (total of 55 head) had an overall serum copper average of 0.861 ppm, which is considered adequate for copper. Limited class 3 liver sample data suggests variable Cu levels with deficiencies at some locations. The interaction with other minerals and individual animal variation will determine the potential for copper deficiency at specific locations. Therefore, individual testing at specific locations is recommended.
Zinc
Class 3 data (n=43) suggests wide variation in Zn levels. Zn deficiency may occur at some locations. Further testing is needed.
Phosphorus
Insufficient data are available for conclusions.
|
Blood samples* |
||||
|
WEIGHTED AVERAGES |
||||
|
Se |
Cu |
Zn |
P |
|
|
0.074 |
0.82 |
1.28 |
no data |
All Values |
|
0.049 |
0.86 |
no data |
no data |
Class 1 data only (random samples) |
|
na |
na |
na |
na |
Class 2 data only (field trials, selected herds) |
|
0.122 |
0.78 |
1.28 |
no data |
Class 3 data only (sick cattle) |
|
Number of Individuals (used in weighted averages) |
||||
|
Se |
Cu |
Zn |
P |
|
|
169 |
108 |
43 |
0 |
All Values |
|
110 |
55 |
0 |
0 |
Class 1 data only (random samples) |
|
0 |
0 |
0 |
0 |
Class 2 data only (field trials, selected herds) |
|
59 |
53 |
43 |
0 |
Class 3 data only (sick cattle) |
|
Number of Samples |
||||
|
Se |
Cu |
Zn |
P |
|
|
0 |
0 |
0 |
0 |
No. of Individuals |
|
12 |
12 |
1 |
0 |
No. of Herds |
|
169 |
108 |
43 |
0 |
No. of Individuals in herds |
|
169 |
108 |
43 |
0 |
Total number of individuals |
|
Lowest and Highest Values (Individuals only) |
||||
|
Se |
Cu |
Zn |
P |
|
|
0.0000 |
0.00 |
0.00 |
0 |
Lowest individual value |
|
0.000 |
0.00 |
0.00 |
0 |
Highest individual value |
|
* Se whole blood, Zn & P serum, Cu whole blood or serum |
||||
|
Liver samples (dry wt. Basis) |
||||
|
WEIGHTED AVERAGES |
||||
|
Se |
Cu |
Zn |
P |
|
|
no data |
240.33 |
no data |
no data |
All Values |
|
na |
na |
na |
na |
Class 1 data only (random samples) |
|
na |
na |
na |
na |
Class 2 data only (field trials, selected herds) |
|
no data |
240.33 |
no data |
no data |
Class 3 data only (sick cattle) |
|
Number of Individuals (used in weighted averages) |
||||
|
Se |
Cu |
Zn |
P |
|
|
0 |
20 |
0 |
0 |
All Values |
|
0 |
0 |
0 |
0 |
Class 1 data only (random samples) |
|
0 |
0 |
0 |
0 |
Class 2 data only (field trials, selected herds) |
|
0 |
20 |
0 |
0 |
Class 3 data only (sick cattle) |
|
Number of Samples |
||||
|
Se |
Cu |
Zn |
P |
|
|
0 |
0 |
0 |
0 |
No. of Individuals |
|
0 |
1 |
0 |
0 |
No. of Herds |
|
0 |
20 |
0 |
0 |
No. of Individuals in herds |
|
0 |
20 |
0 |
0 |
Total number of individuals |
|
Lowest and Highest Values (Individuals only) |
||||
|
Se |
Cu |
Zn |
P |
|
|
0.0000 |
0.00 |
0.00 |
0 |
Lowest individual value |
|
0.000 |
0.00 |
0.00 |
0 |
Highest individual value |