Solid-state fermentation novel process for improving nutritional value of plant feedstuffs
Solid-state microbial fermentation for upgrading nutritional characteristics of raw plant materials is a potential pretreatment for animal feeds.
To increase profits, consider the what-ifs
Simple economic modeling can show that by considering aquaculture production inputs as investments rather than costs, opportunities for increased profits can be quickly identified.
A look at India’s fish feed industry
India's fish-farming industry makes limited use of modern feeds, providing potential for the feed sector to grow. Commercial feeds are predominantly used for pangasius farming, followed by a rising popularity in carp culture.
Mushroom feed additive stabilizes lipid, color of yellowtail meat
In a trial, lipid oxidation and metmyoglobin formation in the dark meat of yellowtail during chilled storage were significantly controlled by feeding mushroom extract to the fish as a supplement.
Alternative lipids spare fish oil in rainbow trout feeds
Alternative lipids have achieved varied success in ensuring adequate growth and fatty acid composition in fillets. The authors evaluated rainbow trout raised on diets containing fish oil or a blend of fish and standard or modified lipids varying in fatty acid composition.
Multiple methods for phytoplankton assessment
The simplest tool for assessing phytoplankton abundance in aquaculture ponds is the Secchi disk. An electronic turbidimeter can be used to measure the amount of light scattered by a water sample.
Lifecycle analysis model quantifies ecological footprint of salmon feed
EWOS and Canadian researchers have developed a model to measure the ecological footprints of aquafeeds using ISO-compliant lifecycle analysis methodologies.
Single-cell proteins from food byproducts provide protein in aquafeed
Wastes produced during food processing can be treated to generate a valuable single-cell protein ingredient for aquafeed with protein and amino acid content similar to fishmeal.
Research validates forecast declines in shrimp fishmeal, fish oil requirements
The required level of fishmeal in white shrimp diets can be reduced to 5 percent through substitution as long as fish oil content is kept at 2 percent.
Turning to the sea: Can seaweed help us raise more food more efficiently?
Discussion of aquaculture development should consider trophic levels. Seaweed culture, for example, could possibly double plant food production by farming less than 1 percent of the ocean’s surface.
Methionine hydroxy analog supplements low-fishmeal shrimp diets
In a study, the authors evaluated the performance of juvenile white shrimp grown at high density and fed diets with varying levels of methionine. Trends toward improvements in feed intake were observed for diets with reduced fishmeal and HMTBa supplementation.
Mycotoxin prevention in aquaculture feeds
Mycotoxins are naturally occurring, toxic chemical compounds produced by molds. When they infect aquaculture feeds and feed ingredients, mycotoxins can affect growth, reproduction and immunity in fish.
Methionine supplement form affects feed leaching, but not shrimp growth
A study compared the effects of two forms of methionine supplemented at different levels in feeds for Pacific white shrimp. Test diets containing methionine bound in soy protein had less leaching of methionine than the diets containing crystalline methionine.
Soybean oil spares fish oil, increases sustainability of cobia feeds
The authors evaluated graded substitution of fish oil with soybean oil in feeds for juvenile cobia and found a substantial amount of dietary fish oil can be spared without sacrificing production performance.
White shrimp study compares commercial feed attractants
A recent study in Brazil tested the efficacy of nine commercial feed attractants for Litopenaeus vannamei. Condensed fish-soluble protein, an amino acid complex with digested bivalve mollusk, and whole squid protein hydrolysate stimulated the highest feeding responses.
Moving toward sustainable fish feeds
The aquaculture industry has significantly reduced fishmeal levels in feeds for major farmed species. To further reduce fishmeal use, new research approaches are essential.