New-generation rotifer diets improve hatchery operations
Unlike artemia, which is largely a commodity item, rotifers need to be raised at farm sites and nutritionally tailored to the requirements of the species being cultured.
MHA supplementation in soy-based diets improves performance of rainbow trout
Methionine hydroxy analog (MHA) supplementation and the addition of other amino acids in soybean-based trout diets can improve their nutritional values.
Extruded shrimp feeds reemerge
The process for making extruded shrimp feeds has flexibility to produce diets with a wide range of fat levels, densities, shapes and sizes.
Extrusion processing of aquatic feeds, Part 1
Depending on the extrusion processing conditions and ingredients used, different products such as floating or sinking feed can be produced.
Feed color affects growth, feed utilization of Nile tilapia
Experiment evaluates effects of feed color on the growth and survival of Nile tilapia fingerlings reared in a recirculating system.
Best management practices for salmon feeds
BMPs for salmon feed manufacturers cover formulation and evaluation of ingredients, while farmers should focus on amount, frequency and delivery of feed.
Inline quality assurance, part 3
In the pelleting cost center, the ingredient mixture is placed in a holding bin above the pellet mill until it is pelleted.
Thraustochytrids: Potential DHA source for marine fish nutrition
In the ongoing challenge of developing larval feeds for aquaculture, thraustochytrids – nonphotosynthetic, heterotrophic marine organisms – have potential as a source of fatty acids.
Inline quality assurance, part 2
The mixing cost center is the heart of the feed-manufacturing process. It is critical that it is under strict quality assurance guidelines.
Growth trials study feeding frequency in shrimp
Feeding frequency is a key part of feed management. Distributing a daily ration as multiple feedings improves growth and improves water quality.
Sorghum a potential energy source in tilapia feed
Sorghum could be used to replace corn meal in aquafeed. It is currently used in the preparation of nonruminant and ruminant feeds.
Banana meal tested as feed ingredient for Nile tilapia fingerlings
Green banana meal contains high carbohydrate levels and low levels of ash and fiber, making it a potential energy source for omnivorous fish species.
New ingredients for shrimp feeds, Part 2
"New" ingredients like seaweed meals, particularly from various kelp species, provide trace minerals and vitamin A, and increase the palatability of shrimp feeds.
Mexico research studies digestibility in fishmeals
Fishmeal quality is dependent on the freshness of the fish, oxidation of the fats and digestibility. Protein digestibility depends on processing conditions.
Cassia seeds a potential protein source in tilapia feed
A study by the authors evaluated the nutritive value of cassia seeds and their digestibility in Nile tilapia, a prominent freshwater aquaculture species.
Inline quality assurance, part 1
However, starting with high-quality ingredients does not ensure high-quality feed unless strict guidelines are implemented in all processing cost centers.