Guanidinoacetic acid is the main endogenous substance that synthesizes creatine in the animal body. Adding guanidinoacetic acid to feed as an effective precursor of creatine can promote muscle energy metabolism and reduce the decomposition of carbohydrates, fats and proteins for energy, thereby accelerating animal growth and improving feed conversion rate.
Adding 300-500 grams of guanidinoacetic acid per ton of fish feed can significantly reduce the feed coefficient and increase the daily weight gain, feed intake and survival rate of fish. The reason why guanidinoacetic acid can improve the utilization rate of fish feed may be that it increases the source of creatine, thereby increasing the content of creatine phosphate, promoting energy metabolism, improving energy utilization, promoting protein anabolism, and ultimately improving improve feed utilization.
After adding guanidinoacetic acid to the feed, there was no obvious change in the hepatopancreas of fish, indicating that as a direct energy supply substance, the metabolic process of guanidinoacetic acid does not increase the metabolic burden on the hepatopancreas of fish. The physical indicators of fish reflect the health status and nutritional level of the fish. For fish of the same size, an increase in fatness means the fish is in good shape and gains weight quickly.