Shrimp yolk is the gonad of shrimp, and liver next to each other. Female shrimp to maturity, the head and neck will contain shrimp yolk, so shrimp yolk shrimp must be female shrimp. But no shrimp yellow is not necessarily male shrimp, female shrimp immature can not see shrimp yellow.

Shrimp contains 20% protein, is a high protein content of one of the food, is fish, eggs, milk several times or even a dozen times. Shrimp and fish, compared to the essential amino acid valine contained is not high, but is a nutritionally balanced source of protein, in addition, shrimp contain glycine, the higher the content of this amino acid, the higher the sweetness of shrimp.