Norway study finds extrusion temperature
A study by the AKVAFORSK Institute of Aquaculture Research sought to determine if extrusion temperatures negatively affect digestibility of nutrients in aquafeed.
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.
Preconditioning shrimp feeds, Part 1
To obtain highly water stable pelleted feeds, the mash should be preconditioned for more than 90 seconds at temperatures higher than 90 degrees-C.
Aquatic feed manufacturing, part 3
The mixing process is the heart of aquatic feed manufacturing. All the ingredients of a formula designed for the target animal are put together.
Aquatic feed manufacturing, part 2
The first processing step in the production of shrimp feeds is the grinding of ingredients for a formula, either individually or as a group.
Advantages of aerated microbial reuse systems with balanced C:N, part 2
Aerated microbial reuse systems utilize intense aeration and mixing to produce yields of 10 to 30 metric tons per hectare per cycle with little or no water exchange.
Mixed maturation diets improve shrimp broodstock performance
An optimal maturation diet is a crucial factor in the successful sexual maturation and reproduction of shrimp in breeding operations.
Processing and diet size affect feed pellet quality, performance
Oceanic Institute documents a shrimp feed processing method involving large feed crumbled into smaller feed particles to produce various diet sizes.
Extrusion production of aquatic feeds
Extrusion cookers and extruders have similarities and many not-so-subtle differences that have effects on end products' characteristics.
Aquatic feed manufacturing, part 1
High-quality aquatic feed manufacturing depends on accurate definition of nutrition requirements, selection of quality ingredients and proper methods.
Phytase unlocks plant potential in aquafeeds
Phytase is a phosphatase enzyme with a specificity of action for the phosphate groups on the phytic acid structure, cleaving off those groups in a strict order.
Alternative ingredients for tilapia aquafeeds
The increasing production of tilapia is increasing the demand for fishmeal as a protein source for formulated aquafeeds.
Feed management for RAS, part 2
The higher cost of feeds for RAS can be offset by better management, since it is easier to feed frequently and monitor uneaten or wasted feed.
Protein requirements for pacu
Because of the natural feeding habits of the Brazilian fish pacu, it is relevant to evaluate the use of vegetable protein in their feed.
Tiny Arctic crustacean improves larval and broodstock diets
A tiny Arctic crustacean can boost larval and broodstock nutrition as the organism is analogous to artemia in some respects.
Specialty feeds for shrimp larviculture
Traditionally, live foods such as diatoms and the brine shrimp artemia have been used in shrimp larviculture.