By Dr Alexandros Szmartis
There are 303 different species cultured in the
aquaculture in contrast to the whole livestock industry where the number of
cultured animal species is only eighteen. Out of the total three hundred and
three, there are two hundred and ten finfish species and thirty crustacean
species farmed.
Each individual species has different culture conditions and
biological needs as well as nutritional requirements and feeding behaviours.
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| Dr Alexandros Szmartis |
As a result, the amount of research and customised
applications for each one in aquaculture is multiple compared to livestock. In
addition to the vast variation among aquatic species (from crustacean to marine
carnivorous fish and fresh water filter feeder fish), the aquatic environment
where the species live contribute to an even bigger challenges to the farmers
and feed manufacturers.
A typical example is the shrimp industry, where the animals
have slow feeding behaviour. Being external masticators they nibble their feed
patiently which results in a prolonged residence time of the feed pellets in
the water. Consequently the nutrients that are present in the feeds are
being leached out of the pellets or dissolved in the water.
This is considered as one for the main issues of the industry because the consumed and utilised nutrient intake does not meet the intended levels provided from the feed to meet the species requirements.
This is considered as one for the main issues of the industry because the consumed and utilised nutrient intake does not meet the intended levels provided from the feed to meet the species requirements.
Read more HERE
The Aquaculturists
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