How do you calculate crude protein in animal feed?

A measurement of protein content. In animal feeds, crude protein is calculated as mineral nitrogen x 6.25 (the assumption is that proteins of typical animal feeds contain 16% nitrogen in average).Click to see full answer. In this manner, how do you calculate crude protein in fish feed?Use the following procedure to calculate composition on a dry-matter basis. Crude protein value on an as-fed basis divided by dry-matter content of the feed times 100 equals the crude-protein content on a dry-matter basis. If alfalfa hay is used as an example, the crude protein value is 17 percent on an as-fed basis.Similarly, what is crude protein in cattle feed? Protein Defined Protein in beef cattle diets is commonly expressed as crude protein. To determine the crude protein content of a forage or feedstuff, first measure the nitrogen content of the feed. Then multiply the nitrogen value by 6.25, because proteins typically contain 16 percent nitrogen (1/. 16 = 6.25). Also to know is, how do you calculate protein in a cattle feed? Now, to figure out the protein % PER POUND in your mix, divide that total (75) by the amount of pounds in your mix (1# barley + 4# oats + 1# BOSS = 6#). 75 divided by 6 = 12.5% that is the Protein % of your mix in each pound.Why Kjeldahl method only measure the quantity of crude protein?A food is digested with a strong acid so that it releases nitrogen which can be determined by a suitable titration technique. Because the Kjeldahl method does not measure the protein content directly a conversion factor (F) is needed to convert the measured nitrogen concentration to a protein concentration.

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