With its rich and savory taste, the freshwater eel has seen an increase in appreciation in local and international markets. Taking advantage of this, a study initiated by scientists from Cagayan Valley aims to propel the culture of eels with their simple yet stunning innovation.
The freshwater eel industry in the Philippines has become a valuable contributor to the national economy. In recent years, the Philippines has been a major source of eels for Japan, China, South Korea, and Taiwan. Meanwhile, local markets have also seen a significant consumption of eels, especially in the regions.
To further propel the eel industry, Dr. Isagani P. Angeles, Jr. of the Isabela State University (ISU) started a research project that improved feeding practices in eel farms. The project aims to increase the survival rate of eels during culture using aquatic plants, such as ‘kangkong’ and Azolla as feed supplements. Such plants were proven to improve the immune system of the eels against bacterial infections.
With eight months of research, Dr. Angeles and his team generated results that showcase improvements in the production of eels. By adding 2% kangkong and 2% Azolla extracts to the diet, the eels presented a positive immune response against Aeromonas hydrophila infection, a major problem in the industry. Also, the eels exhibited increased weight, growth, and survival rate.
Dr. Angeles recommends that the formulated diet is fed daily for six months until the eels grow to six inches.
Dr. Angeles and his team plan to contribute more to the eel industry and turn Cagayan Valley into an eel capital. According to them, further research and development on eels' status, species composition, and diversity in other parts of the country like Ilocos, Bicol, Cotabato, and Butuan are in the pipeline.