Abstract
The topic taken from this research was fish feed. Feed was the most important part in aquaculture. Most of the operational costs of aquaculture activities came from feed. Thus, management in feeding had to be applied. Apart from the high operational costs, the feed also had an impact on the cultivation environment. Poor management in the use of feed will have a negative impact on the cultivation process, namely the mortality rate of cultivated species increases the species immune system decrease, susceptibility to viruses. The purpose of the research was to create a dynamic system model. Which, in the model a systemized algorithm was structured that would assist cultivators in carrying out aquaculture activities and with this model, problem that occur was immediately resolved. The dynamic system model was the method used in this research. This model was used to determine the optimization of feed use based on several variables that support the process of using the feed. The result showed that from a dynamic system, a causal relationship occurs, namely the feed used during cultivation was input. Which would affect the environment directly through 2 variables namely total feces and total uneaten feed. Due to these two variables, it would result in the accumulation of organic waste. In this research, the production of O.niloticus was 14 kg, the amount of feed used was 10 kg and the cultivation time was 65 days. The design of this dynamic system model was expected to enable tilapia (O.niloticus) cultivators to develop aquaculture businesses that was more environmentally friendly, effective, and efficient.
Keywords : Dynamic system; oreochromis niloticus; aquaculture; feed; organic matter.