by
Phileo by Lesaffre
Fishmeal is considered the best source of nutrients for aquaculture feeds due to the balanced nutrient composition and the high digestibility of its ingredients. However, the continuous depletion of fish stocks recorded worldwide, together with increased aquaculture production, is causing a shortage of fishmeal supply for the aquaculture industry.
As an immediate consequence, the price of fishmeal has spiked, which is putting
the profitability of shrimp aquaculture production at risk. It is, therefore,
imperative that producers identify alternative protein sources that allow for
an environmentally sustainable and economically viable shrimp production.
Protein sources of vegetable origin are a valid alternative to partially replace fishmeal. Plant-based ingredients are largely available, economically advantageous when compared to fishmeal, and they have a good nutritional value. However, some features of vegetable materials make the transition from fishmeal to plant-based ingredients quite problematic.
Ingredients of vegetable origin often contain anti-nutritional factors (ANFs), which are biological compounds such as tannins, saponins, and glycoalkaloids that are naturally produced by plants to defeat predators in their natural environment.
These compounds have a bitter taste and, therefore, result in a reduced acceptability and palatability of the feed. Moreover, shrimps are able to detect the feed in the water thanks to the presence of chemical signals present in fishmeal, such as amino acids, small peptides, amines and nucleotides, that attract them.
Reducing the quantity of such key biochemical triggers through the partial substitution of fishmeal level with plant-based ingredients in aquafeeds negatively affects attractiveness of the feed and, consequently, reduces the feed intake.
Ultimately, decreased feed palatability and feed intake have a dramatic effect on shrimp growth performance, which, in turn, severely hinder productivity and economic viability.
Read more HERE.
Fishmeal is considered the best source of nutrients for aquaculture feeds due to the balanced nutrient composition and the high digestibility of its ingredients. However, the continuous depletion of fish stocks recorded worldwide, together with increased aquaculture production, is causing a shortage of fishmeal supply for the aquaculture industry.
Protein sources of vegetable origin are a valid alternative to partially replace fishmeal. Plant-based ingredients are largely available, economically advantageous when compared to fishmeal, and they have a good nutritional value. However, some features of vegetable materials make the transition from fishmeal to plant-based ingredients quite problematic.
Ingredients of vegetable origin often contain anti-nutritional factors (ANFs), which are biological compounds such as tannins, saponins, and glycoalkaloids that are naturally produced by plants to defeat predators in their natural environment.
These compounds have a bitter taste and, therefore, result in a reduced acceptability and palatability of the feed. Moreover, shrimps are able to detect the feed in the water thanks to the presence of chemical signals present in fishmeal, such as amino acids, small peptides, amines and nucleotides, that attract them.
Reducing the quantity of such key biochemical triggers through the partial substitution of fishmeal level with plant-based ingredients in aquafeeds negatively affects attractiveness of the feed and, consequently, reduces the feed intake.
Ultimately, decreased feed palatability and feed intake have a dramatic effect on shrimp growth performance, which, in turn, severely hinder productivity and economic viability.
Read more HERE.
The Aquaculturists
This blog is maintained by The Aquaculturists staff and is supported by the
magazine International Aquafeed which is published by Perendale Publishers Ltd
For additional daily news from aquaculture around the world: aquaculture-news
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