Inventory system improvement for poultry

R&R is a company located in Menganti, Gresik, East Java that sells poultry with a short life cycle. The purchase price of poultry from suppliers and customer demand fluctuates daily. The objectives of this research are suggesting daily demand forecasting, predicting selling price, and determining the optimal single order quantity (SOQ) to maximize profit for the company. The results of the study showed that the SOQ method could maximize the profit by considering the results of daily demand forecast, selling price and purchase price prediction to compare with the real condition. During the planning horizon, the increase of total profit was 60.23% and 6.39% in total revenue. There is an application that was developed to support determination of optimal quantity of poultry by the company