Replacing of live food with artificial diet on growth and survival rates of white leg shrimp (Litopenaeus vannamei) larvae

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Abstract

Replacing live food with artificial diets in aquatic larviculture, especially in shrimp larvae
not only is caused convenience feeding, but also in economical view is very important. With
this object, in this survey, a density of 100.L-1 white leg shrimp larvae in 9 nutritional
treatments each with three replicates were cultured in 20L tanks each one was held with 10L
of 30% salty water using one air stone. The larvae were fed 4 times.day-1 with different diets,
including live foods (Cheatoceros gracilis and Artemia nauplii), artificial diets (handmade
and imported) and different combinations. The results showed that the growth rate and
survival percentage in larvae fed with combination feed treatments, were more desirable than
those fed with food and feed treatments and feeding with homemade and imported feeds
alone, raised high mortality in shrimp larvae during the experiment. Also, it was denoted that
even if the zoea larvae has been fed with live food, feeding with 100% artificial diets for the
resting larviculture period won't be possible because of decreasing significantly in growth
rate, total length and survival percent of shrimp larvae, compare to the other treatments. In
addition, replacing partly of live food with artificial diet without adverse affects on growth
and survival rates of white leg shrimp larvae will be possible and the observation supported
that the handmade feed with given formulation, had more suitable results comparing to the
imported one for mixing with live food economically. Therefore, we recommend that a
mixture the formulated diet and algae plus Artemia nauplii is used for culturing white shrimp
larvae.
*Corresponding author

Keywords

Iranian Scientific Fisheries Journal
Volume 20, Issue 3
May and June 2011
Pages 87-102

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