Health & Welfare

Culture water pre-inoculation of probiotics in Pacific white shrimp nurseries

This study showed that a longer inoculation of probiotics will improve shrimp postlarvae growth and survival, and that a new technique developed for more accurately estimating postlarvae weight can significantly reduce the food that must be supplied. 

READ
Testing an intensive shrimp hatchery system using biofloc technology
Article image for Testing an intensive shrimp hatchery system using biofloc technology

Health & Welfare

Testing an intensive shrimp hatchery system using biofloc technology

The use of biofloc technology (BFT) is increasing in the commercial production of several important aquatic species, as it can increase production and efficiency and minimize the potential impacts of effluents. This study showed that BFT systems without water exchange and supplemented with molasses or dextrose as a carbon source yield adequate production and water quality during the hatchery phase of L. vannamei. 

Stocking density affects super-intensive biofloc nursery shrimp production
Article image for Stocking density affects super-intensive biofloc nursery shrimp production

Health & Welfare

Stocking density affects super-intensive biofloc nursery shrimp production

The authors performed a study to determine the tolerance of shrimp postlarvae to the crowding effects of high-density stocking in terms of production performance. Postlarvae were stocked in heavily aerated microcosm tanks with biofloc at 1,500; 3,000; 6,000 or 9,000 shrimp/m3. High survival was observed at all densities. Final biomass values increased with higher stocking densities, but there was no significant difference between the 6,000 and 9,000 shrimp/m3 treatments or the 1,500 and 3,000 shrimp/m3 treatments. 

What size are your postlarvae?
Article image for What size are your postlarvae?

Health & Welfare

What size are your postlarvae?

Although the characteristics of shrimp postlarvae have changed over time, the standard method used to identify their size has not. Usually, the “size” of postlarvae is considered their chronological age after completing metamorphosis. 

Biosecurity: Not just a word
Article image for Biosecurity: Not just a word

Health & Welfare

Biosecurity: Not just a word

Most aquaculture farms rely on general strategies for biosecurity that implement protocols learned from others. Establishing effective biosecurity, however, can be complicated due to multiple interacting variables.