Evolving vacuum coaters can apply coatings to feed with up to 40 percent oil levels. It may soon be used to reduce inclusion levels of fat- and water-soluble vitamins in feeds.
A super-intensive RAS grow-out trial produced 5.7 kg of shrimp per square meter in 14 weeks using minimal water volume and only 0.34 percent daily water exchange.
Mechanical water circulation can prevent stratification and provide more dissolved oxygen near pond bottoms. Strong water mixing can also control algae growth.
Preliminary results indicate that rainfall events and animal feed lots contribute to increasing the amount of fecal contamination in bivalve mollusks.
Witholding feed from channel catfish during the manifestation of enteric septicemia is a common practice, but discontinued feeding after an ESC challenge increased mortality.
South African abalone culture is growing and many of the land-based tank production systems use wild-harvested kelp to feed the animals.
A model shrimp breeding program in Mexico used a large data set to estimate the heritability of body weight in different environments and the mean family breeding value for body weight using BLUP methodology.
Research on the great scallop in Norway has focused on improving the rearing environment and enhancing larval and spat yield.
Determining changes in the genetic diversity of selected hatchery stocks provides a means to monitor inbreeding, control loss of genetic diversity and achieve sustainable levels of genetic gain.
The Hubbs-SeaWorld Research Institute’s Mission Bay Laboratory has had limited success hatching and rearing eggs from captive wild yellowtail jack broodstock, but its program is improving.