NUTRITION
Advanced maturation feeds for biosecure production of robust nauplii Mark Rowel Napulan, Ramir Lee, Peter Van Wyk, Chris Stock, Craig L. Browdy, Zeigler Bros.
Attractability, palatability and consumption are key attributes for replacement live and fresh feeds.
The global export of specific pathogen-free (SPF) Penaeus vannamei broodstock was estimated to be 1.4 million animals in 2019. This equates to USD 77 million in trade at US D55 per animal. The majority of P. vannamei broodstock is exported from the Americas to Asia where 80% of world shrimp production is carried out. The use of SPF shrimp broodstock in Asia is driven by the regional use of small, biosecure pond systems. Shrimp maturation protocols in Asia are dominated by the use of live and fresh feeds due to their perceived
Hatchery Feed & Management Vol 10 Issue 1 2022
benefits in improving the fecundity of broodstock. These natural feeds, however, pose significant biosecurity risks. Polychaetes, an important dietary component in shrimp maturation, are confirmed carriers of Enterocytozoon hepatopenaei (EHP) and pathogenic Vibrio parahaemolyticus, the early mortality syndrome/acute hepatopancreatic necrosis disease (EMS/ AHPND) causing bacteria. In fact, EMS/AHPND was first reported to have been transferred from China to Thailand through the live polychaete trade, subsequently spreading throughout Asia.
