Aquaculture technical reports
Publications
Extruded shrimp feeds improve performance, so why are they not more popular?
2022
Over 90 percent of shrimp feed production in Asia is still based on the use of lower-cost compression-based pelleting techniques. Nutritional and economic superiority of using extruded shrimp feeds has been known for almost two decades. Shrimp fed with sinking extruded feeds display higher growth and improved feed conversion efficiency compared to shrimp fed with conventional pelleted feeds. The main drivers for the shrimp-farming sector to transition from the use of conventional pelleted feeds...
Genetically improved farmed tilapia: the GIFT that keeps on giving
2022
Today, tilapia is the second most cultured fish species in the world. After 28 years of selective breeding, WorldFish’s genetically improved farmed tilapia (GIFT) is now producing its twenty third generation and is being used by 17 governments around the world. The GIFT strain has improved by nearly 10 percent in growth performance per generation. The selective breeding method has also been successfully applied to other tilapia species, Indian major carps and Chinese silver...
Sustainable intensification of aquaculture using efficient nanobubble technology
2022
To intensify production, it is common for aquaculture producers to aerate water in production systems. Efficient distribution of dissolved oxygen in the production unit is important to avoid stress and crowding behaviour. Most mechanical aeration systems agitate the water surface to increase oxygen levels and as a result dissolved oxygen levels are highest near the water surface and aquatic animals may aggregate and crowd in areas where oxygen levels are highest. Commercial companies have...