Feed crude protein final measure - amino acid

Crude protein is the data obtained by multiplying the nitrogen content of the feed by 6.25. The level of crude protein reflects the level of nitrogen in the feed. The need for protein in animals is the need for amino acids, which are the basic units that make up proteins. Rather than crude protein or nitrogen. For example, non-protein content such as urea can reach 100-200%. Is urea a better feed ingredient than soybean meal and fish meal? The same true amino acid protein, such as feather meal and dried blood meal, has a high crude protein content, but its digestibility is very low, which is a poor protein material. Therefore, for feed, more attention should be paid to the digestible protein or amino acid content of the feed, focusing on the actual use of the feed, rather than the protein content of the label. U3m China Feed Industry Information Network - based on feed, serving animal husbandry