May 1, 2023 · From this feed amount, additional 200 grams is added every day until Day 15 of culture. On the 16th day, a mixture of PO1B/ PO2B is used up to four times a day until an average weight of 5 g is achieved. From this weight until 10 g, the vannamei feed is shifted to PO3B, followed by PO4B or grower feeds until they reach 15 g.