| Autor: |
Visek, W.J., Monroe, R.A., Swanson, E.W., Comar, C.L. |
| Zdroj: |
The Journal of Nutrition; May 1953, Vol. 50 Issue: 1 p23-33, 11p |
| Abstrakt: |
Endogenous fecal calcium was estimated directlyin normalcattle by a method which consisted of 10 daily intravenous injections of radiocalcium, comparison of the specific activities of blood and feces taken on the 4th to 8th day post-injection, and routine determination of calcium balance. The daily endogenous fecal values for three 8-year-old dairy cows averaged 7 gm and for two yearling Hereford steers about 4 gm. The endogenous fecal calcium was not significantly changed when the dietary calcium was varied from normal to a high level. In two animals on a low calcium diet a decrease in endogenous fecal calcium was indicated. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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