Trace Minerals for California Beef Cattle
University of California, Cooperative Extension
San Joaquin County Mineral Data
Selenium
San Joaquin County is selenium deficient. The average whole blood Se value was 0.038 ppm from 158 samples. When samples are selected randomly from the county's cattle population, which is a better sampling method for estimating population status, the average is 0.012 ppm. Numerous samples have been reported below 0.01 ppm which is extremely low. Supplementation is suggested when deficiency occurs.
Copper
Serum Cu from samples at the CVDL averaged 0.78 which suggests adequate Cu levels. However, liver samples, which are superior as diagnostic tools, from 22 samples at the CVDL averaged 119 ppm Cu (SD 135). Liver Cu levels at or below 100 ppm are deficient. Therefore, the large variation in liver Cu suggests some cattle are Cu deficient. Additional testing is needed to identify areas and herds with Cu deficiencies.
Zinc
Twelve samples from the CVDL averaged 1.09 ppm Zn suggesting adequate status. However, the small number of samples is too small for confidence is the assessment. Further testing is needed to identify areas and herds with Zn deficiencies.
Phosphorus
Insufficient Data
|
Blood samples* |
||||
|
WEIGHTED AVERAGES |
||||
|
Se |
Cu |
Zn |
P |
|
|
0.038 |
0.78 |
1.09 |
no data |
All Values |
|
0.012 |
no data |
no data |
no data |
Class 1 data only (random samples) |
|
0.019 |
no data |
no data |
no data |
Class 2 data only (field trials, selected herds) |
|
0.079 |
0.78 |
1.09 |
no data |
Class 3 data only (sick cattle) |
|
Number of Individuals (used in weighted averages) |
||||
|
Se |
Cu |
Zn |
P |
|
|
158 |
38 |
12 |
0 |
All Values |
|
69 |
0 |
0 |
0 |
Class 1 data only (random samples) |
|
30 |
0 |
0 |
0 |
Class 2 data only (field trials, selected herds) |
|
59 |
38 |
12 |
0 |
Class 3 data only (sick cattle) |
|
Number of Samples |
||||
|
Se |
Cu |
Zn |
P |
|
|
99 |
0 |
0 |
0 |
No. of Individuals (from multiple herds) |
|
1 |
1 |
1 |
0 |
Herd Data(single value for a herd): No. of Herds |
|
59 |
38 |
12 |
0 |
Herd Data: No. of Individuals in herds (above) |
|
158 |
38 |
12 |
0 |
Total number of individuals |
|
Lowest and Highest Values (Individuals only) |
||||
|
Se |
Cu |
Zn |
P |
|
|
0.0080 |
no data |
no data |
no data |
Lowest individual value |
|
0.112 |
no data |
no data |
no data |
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 |
119.00 |
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 |
119.00 |
no data |
no data |
Class 3 data only (sick cattle) |
|
Number of Individuals (used in weighted averages) |
||||
|
Se |
Cu |
Zn |
P |
|
|
0 |
22 |
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 |
22 |
0 |
0 |
Class 3 data only (sick cattle) |
|
Number of Samples |
||||
|
Se |
Cu |
Zn |
P |
|
|
0 |
0 |
0 |
0 |
No. of Individuals (from multiple herds) |
|
0 |
1 |
0 |
0 |
Herd Data(single value for a herd): No. of Herds |
|
0 |
22 |
0 |
0 |
Herd Data: No. of Individuals in herds (above) |
|
0 |
22 |
0 |
0 |
Total number of individuals |
|
Lowest and Highest Values (Individuals only) |
||||
|
Se |
Cu |
Zn |
P |
|
|
no data |
no data |
no data |
no data |
Lowest individual value |
|
no data |
no data |
no data |
no data |
Highest individual value |