Trace Minerals for California Beef Cattle
University of California, Cooperative Extension
San Luis Obispo County Mineral Data
Selenium
Samples (n=78) from 8 herds had an average whole blood selenium level of 0.143 ppm which indicates San Luis Obispo county is not selenium deficient. Herds sampled were located near Cambria, Paso Robles, San Luis Obispo, Santa Maria and Shandon. A few cattle had individual selenium levels of 0.03 to 0.04 ppm, which is on the borderline to selenium responsive.
Copper
Class 3 liver data averaged 131 ppm (SD 151) suggesting some Cu deficiency. More complete testing is needed.
Zinc
A large number of Class 3 samples indicate Zn is adequate.
Phosphorus
Insufficient data are available for conclusions.
|
Blood samples* |
||||
|
WEIGHTED AVERAGES |
||||
|
Se |
Cu |
Zn |
P |
|
|
0.172 |
0.63 |
1.30 |
no data |
All Values |
|
0.159 |
no data |
no data |
no data |
Class 1 data only (random samples) |
|
0.087 |
no data |
no data |
no data |
Class 2 data only (field trials, selected herds) |
|
0.184 |
0.63 |
1.30 |
no data |
Class 3 data only (sick cattle) |
|
Number of Individuals (used in weighted averages) |
||||
|
Se |
Cu |
Zn |
P |
|
|
278 |
160 |
121 |
0 |
All Values |
|
60 |
0 |
0 |
0 |
Class 1 data only (random samples) |
|
18 |
0 |
0 |
0 |
Class 2 data only (field trials, selected herds) |
|
200 |
160 |
121 |
0 |
Class 3 data only (sick cattle) |
|
Number of Samples |
||||
|
Se |
Cu |
Zn |
P |
|
|
78 |
0 |
0 |
0 |
No. of Individuals |
|
1 |
1 |
1 |
0 |
No. of Herds |
|
200 |
160 |
121 |
0 |
No. of Individuals in herds |
|
278 |
160 |
121 |
0 |
Total number of individuals |
|
Lowest and Highest Values (Individuals only) |
||||
|
Se |
Cu |
Zn |
P |
|
|
0.0300 |
0.00 |
0.00 |
0 |
Lowest individual value |
|
0.350 |
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 |
131.33 |
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 |
131.33 |
no data |
no data |
Class 3 data only (sick cattle) |
|
Number of Individuals (used in weighted averages) |
||||
|
Se |
Cu |
Zn |
P |
|
|
0 |
59 |
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 |
59 |
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 |
59 |
0 |
0 |
No. of Individuals in herds |
|
0 |
59 |
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 |