Aquaculture America 2020

February 9 - 12, 2020

Honolulu, Hawaii

TESTING PERFORMANCE OF FISHMEAL FREE RABBITISH Siganus lineatus FEED IN PALAU

Julio Camperio, Frederick Barrows and Robert Jones
 
The Nature Conservancy
4245 Fairfax Dr Suite 100, Arlington, VA 22203
Email: juliocamperio@gmail.com
 

Aquaculture is quickly becoming more widely accepted and developed as a means of efficiently and sustainably producing protein for a growing population. Some countries already have a strong aquaculture industry and are investing in fine tuning and perfecting their techniques and practices; other countries have a young industry which is still in de velopment with considerable potential. Island countries like Palau have limited resources to produce food on the islands and reach a stable level of food security. This is why aquaculture is currently being developed in Palau through a join t  effort between The Nature Conservancy and the Bureau of Marine Resources. Golden l ined rabbitfish (Siganus lineatus ) are currently being farmed in Palau in floating ocean cages and ponds due to high demand for human consumption which has led to dwindling wild stocks.  The feed that is being used for r abbitfish in Palau is  actually intended  for milkfish (Chanos chanos ) and it contains fish meal. As aquaculture adopts more sustainable practices, alternative sources of protein are being researched and implemented into feeds to reduce the overall environmental impact. At the same time, the fish nutrition sector is also adapting by developing feeds specialized for specific species rather than general fish categorizations. This paper will investigate the feed performance of four experimental diets for rabbitfish that do not contain any fish meal but rather alternative sources of protei ns.  Key performance indicators like growth, feed conversion ratio and protein efficiency ratio will be presented comparing these four diets with the commercially used m ilkfish feed. In the first trial, the two experimental diets that were tested had similar feed conversion ratios than the control, while in the second trial the other two experimental diets had a better performance across all treatments. These results show that a feed for rabbitfish could be produced without the use of fish meal while at the same time increasing growth performances.