Jul 12, 2021 · The status of the Kenyan fish feed industry. In semi-intensive and intensive aquaculture systems, feeds typically account for between 40–60% of production costs (Shitote et al., 2001; Ali and Jauncey, 2004; Liti et al., 2006).Contribution of 50 percent and above in the total operating cost indicates that fish feed is the most costly item in aquaculture production.