PENAEUS
VANNAMEI LARVAL STAGES NUTRITIONAL NEEDS
From:
gongora34 [mailto:Gongora@racsa.co.cr]
To: shrimp@yahoogroups.com
Sent: July 03, 2003
QUESTION:
I
wish I could get technical information on what I should look for in
commercial diets and feed for Penaeus vannamei larval stages nutritional
essential needs.
Protein,
fat, lipids, ash, aminoacids, HUFA, vitamins, minerals…
The
most extended analysis will be welcome.
If
you discern between Zoea 1 to Mysis 3… and PL-1 to PL-15, it would be
great!
***************
COMMENTS
1:
There
are a lot of documented references to the exact requirements of shrimp
larvae in their different stages. Practically though ( you
mentioned you were looking at commercial diets) it is not just the
nutritional content of the diet that is important you need to make sure
you can actually get this nutrition into the larvae. Factors such as
particle size and water stability become critical.
You can of course research all this but the easiest and most practical
solution would be to stick to a reputable commercial diet ( INVE,
Ziegler, Higashimaru, Cargill, Biomarine and many others manufacture
excellent diets ) which will state clearly the particle size and the stage
of larvae it is intended for.
Many people hedge there bets by mixing three or four different diets in
a general Zoea, Mysis and PL diet.
If you do want to research crustacean larval nutrition I would recommend two
books; one by the World Aquaculture Society “Crustacean Nutrition”
available on their website and another whose exact title escapes me,
but it was produced by the FAO and the author is Dr. Albert Tacon. Both of
these books are fully referenced and you can go into as much detail as you
wish.
Chris Denmark
e-mail : cdenmark@seafarmsgroup.com
***************
COMMENTS
2 :
A
few items you must look at, nutritional content and particle size are a
few of them, others are digestibility, raw materials used, and proccess,
which give the larval feed the nutritional and water stability you are
looking for. Once you have this info, the results in a commercial
production should give you the best choice.
Fabian Jijon Tinoco
Business Unit Representative
INVE Aquaculture Nutrition
INVE del ECUADOR