Abstract:
The research and development of organic Nile tilapia (Oreochromis niloticus) culture in close system pond in Maha Sarakham Province aimed to develop organic Nile tilapia culture via research in new Royal theory agriculture farming of 4 coresearcher farmers. This study investigated basic knowledge of fish raising, appropriate organic feed formula development for Nile tilapia culture in close system ponds, and water and soil properties of culture ponds in Maha Sarakham. The results revealed that most of fish culture in Royal theory farming was extensive. Soil property was poor of soil fertility and high salinity. Water quality was moderate for aquaculture. Effect of commercial fish feed on the SGR, FCR, SR and cost production of Nile tilapia found commercial Tilapia feed showed highest efficiency on growth performance but when compared based on cost production, commercial Catfish feed was the most effective. From Nile tilapia culture using organic feed formula developed in this study it was found that the formula I and IV showed highest SGR and FCR. However, cost production was high when compared to the commercial feed. In addition, it was found that all data were varied in different areas in which dependence on diets quality, soil and water fertility, knowledge skills and farmer intention. It indicates that the farmers were poorly educated in fish nutrition and farm management, so they that should improve their professional skills provided by the government