This study was conducted to evaluate in the field the results obtained in the controlled laboratory of feeding the Nile tilapia incorporating the filamentous green algae Rhizoclonium riparium var implexum in practical diet.
A super intensive culture system at PSU-Binmaley using a stocking density of 26 fish per m2 was used to test the growth and survival of Nile Tilapia fed with a diet incorporating the filamentous green algae.
The daily feed intake of the Rhizoclonium group was significantly the least and thus also the feed cost while the final body weight was significantly the highest.
When the profitability is projected into one-hectare unit, the Rhizoclonium-based culture under a super intensive system resulted in the highest estimated gross revenue of Php 1.51 Million in just 64 days. The estimated additional profit of the Rhizoclonium-based culture over that of the commercial feed-based was Php 0.49 Million in just two months exclusive of other costs such as labor, tilapia fingerlings, among others.