Profit maximization of whiteleg shrimp (Litopenaeus vannamei) intensive culture in Situbondo Regency, Indonesia

Shrimp is one of the major commodities of aquaculture in Indonesia. The culture of whiteleg shrimp (Litopenaeus vannamei) in Indonesia has an important role in economic growth, employment and welfare of coastal communities in Indonesia, including Situbondo Regency. This research purpose was to estimate the maximal profit at the intensive culture of whiteleg shrimp in Situbondo Regency, Indonesia. Our research model used polynomial growth model and profit maximization to estimate the optimal time of whiteleg shrimp culture at the maximal profit. This research model was applied to whiteleg shrimp intensive culture at BPBAP Situbondo, especially at IPU (location unit) of Gelung Village. The profit maximization used the first derivative of profit equation to culture time equal to zero. We used singleprice and multi-price in the simulation of research. In the case of our research, the intensive culture of whiteleg shrimp can reach the maximum profit in 159 days (single-price model) or 160 days (multi-price model). But, if we calculate the opportunity cost, so the intensive culture of whiteleg shrimp can make the optimal benefit if use three cycle of culture per year