Impacts of mineral nutrition include animal growth, reproduction, milk production and health, all of which affect ranch profi tability.
Table 4. Phosphorus consumption from different sources. Product
15:4 ADM mineral 0.25 12:9 ADM mineral 0.25 12:9 ADM mineral 0.125 Cottonseed meal DDGS1
2 2
1 Distillers dried grains with solubles
higher phosphorus content will reduce consumption because of other potential changes in products. If a cow eats 2 pounds of cottonseed meal once a
day as a protein/energy supplement, she receives an additional 10 grams of phosphorus. Distillers dried grains with solubles (DDGS) are be-
coming more popular as a protein/energy supplement. If fed at 2 pounds per day per head, it will supply the animal with approximately 6.4 grams of phosphorus. The data in Table 4 shows that it is not necessary
to change to a mineral with more phosphorus in the winter if a protein/energy supplement is fed. A common misconception is, “I don’t need calcium
in my mineral because my soil is high in calcium” or “my ranch is on a limestone base.”
tscra.org Normally, plants will not absorb much more calcium
on these types of sites than on lower-calcium soils. Forage sample results from Texas show that, on av-
erage, irrigated bermudagrass contained 0.43 percent calcium and native forages contained 0.48 percent. There is little difference between the 2, and feeding minerals without calcium may not be a good idea. This is especially true if the mineral is being fed to heavy milking cows or growing cattle with higher calcium requirements. Banta presented much more information than
space allows in this article. Contact TSCRA for in- formation on downloading his presentation for more education on selecting minerals that are right for your operation.
July 2016 The Cattleman 73
4 9 9
1.1 0.7
Intake (lbs) % Phosphorus Phosphorus Supplied (gm)
4.5
10.2 5.1
10.0 6.4
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