Research examines feeding regimes for freshwater prawns
U.S. commercial culture of freshwater prawns has increased thanks to added substrate, increased stocking densities and feed rates and size grading.
Nitrogen management for shrimp nutrition in low water-exchange production systems
Research in culture systems without water exchange indicates that dietary protein levels have great impact on dissolved inorganic nitrogen loading.
Growth trials replace fishmeal in red drum diets
Given the finite supply of fishmeal and other marine protein sources, alternative ingredients are needed to replace fishmeal for production diets for marine fish.
Preconditioning shrimp feeds, Part 4
Pressurized conditioners offer an alternative preconditioning technology to improve pellet quality, increase capacity and feed conversion and pasteurize feed.
Supplementing aquaculture diets with nucleotides
Nucleotides are basic building blocks of the nucleic acids DNA and RNA, and necessary elements in the their replication during cell division and renewal.
An evaluation of soybean meal quality
Soybean meal has the largest market share of all protein meals used in the production of single-stomach animals, and is a major component of aquafeeds.
Effects of feed protein levels on redclaw production in Mexico
The redclaw, an Australian freshwater crayfish, is produced in Mexico using aquafeeds formulated for fish, penaeid shrimp and freshwater prawns.
Microdiets for red drum larvae
Formulated microdiets, which are easier to maintain and have a lower production cost than live prey, offer an alternative food source to rotifers and artemia.
Formulated diets: Replacement for live food in marine fish larvae
Creating formulated diets for fish larvae is difficult because estimating nutritional requirements cannot be done using traditional nutritional approaches.
IFOAM drafts basic standards for organic aquaculture production
No official data are available concerning the production of certified organic aquaculture products, but it is primarily from European countries.
Preconditioning shrimp feeds, Part 3
Aquaculture feed manufacturers in the Americas – with the exception of a few countries like Ecuador – have relied on short-term, single-pass conditioners.
Minimizing environmental impacts of shrimp feeds
The choice of shrimp feeds or feeding regimes can have a profound effect on the rearing conditions and health of the cultured species.
Preconditioning shrimp feeds, Part 2
The effects of long steam preconditioning times of up to 30 minutes on the water stability of shrimp feeds were evaluated in early research studies.
Grow-out test of freshwater prawns finds effects of feed protein levels limited
The development of technological innovations would improve the economic viability of freshwater prawn culture in the Mississippi Delta.
NIR an accurate method for determining chemistry of shrimp feed ingredients
The potential for NIR spectroscopy for rapid and accurate prediction of the chemical composition of fishmeal and soybean meal deserves investigation.
Density control of extruded marine fish feeds
Several tools can help control the density of extruded marine fish feeds, including vented extruder barrels and separate cooking and forming extruders.