G
glycine
V
valine
Amino acids which are not synthesized in the body and must be provided in the diet to meet an animal’s metabolic needs
Essential Amino Acids:
These amino acids are need not be provided through diet, because they can be biosynthesized in adequate amounts within the organism.
Non-Essential Amino Acids:
synthesized within the organism but their synthesis is not in sufficient amounts (provided in the diet; Arginine and Histidine)
Semi-essential amino acids
Alanine
Nonessential
Histidine
Essential
Arginine
Nonessential
Asparagine
Nonessential
Cysteine
Nonessential
Isoleucine
Essential
Leucine
Essential
Glutamate
Nonessential
Glutamine
Nonessential
Glycine
Nonessential
Lysine
Essential
Methionine
Essential
Phenylalanine
Essential
Proline
Nonessential
Serine
Nonessential