Historical Examples. 1  The vegetation was extravagant in its luxuriance and splendor. 2  Except a few lichens, there was not a mark of vegetation about it. 3  The grotto was completely lost to sight beneath the onslaught of vegetation. 4  The work of vegetation begins first in the irritability of the bark and leaf-buds. Essays, First Series Ralph Waldo Emerson There was no soil, no moss, no lichen, no trace of vegetation.
Nutrition labels tell you how much crude protein is in food. Protein is key to good health -- it's involved in immune function, oxygen transport and maintaining strong muscle tissue. Crude protein is a measure of how much protein is in food, based on laboratory tests studying the food's chemical composition. When you look for protein content on a food's nutrition label, the number you see refers to crude protein.
Chemically, each amino acid contains carbon, nitrogen, oxygen, and hydrogen in different amounts and in different placements. A few amino acids also contain sulfur. In the laboratory analysis for crude protein, the nitrogen content of feed is measured. It is assumed that protein contains 16% nitrogen.hat amino acid is called the first-limiting amino acid in the diet. The âfirst-limitingâ amino acid of any diet will depend upon the amino acid profile of the ingredients in the ration. For dairy cows, it is usually lysine or methionine.