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April 11, 2013



Krill Hydrolysate Works as an Artemia Replacement


From Abstract: In this study, the effects of two microencapsulated feeds were evaluated on the development, growth, survival, proteolytic activity and biochemical composition of white shrimp larvae (Penaeus vannamei).  The treatments were: basal microcapsules, microcapsules containing krill hydrolysate and a live food control (Artemia franciscana nauplii).  All treatments also received algae (Chaetoceros ceratosporum and Tetraselmis chuii).  No significant differences were found in development index and survival among larvae.  A specific growth rate was calculated.  Daily growth rate was significantly higher in larvae fed the live food control (15 ± 0.06%), intermediate in larvae fed krill hydrolysate microcapsules (11 ± 0.04%) and lowest in larvae fed basal microcapsules (7.5 ± 0.5%).  In the full copy of the study (see next paragraph), extensive information is provided on the composition of the diets.


Shrimp News: If you are a member of the World Aquaculture Society, you can view or download this study at the Society’s Website for free.  You’ll need to enter your email address and password.  Once you are logged in, click on the blue picture of the of the Journal of the World Aquaculture Society on the right side of the page.  On the page that opens, you’ll see another picture of the journal with the words “Current Issue” under it.  Click on “April 2013”.  On the page that opens, this study will be the third one down on the list.  Click on it.  On the page that opens, click on the words “View Full Article (HTML)” or “Get PDF (575K)”, which appear on the right side of the page above the abstract.


Source: Journal of the World Aquaculture Society.  Replacement of Artemia franciscana Nauplii by Microencapsulated Diets: Effect on Development, Digestive Enzymes, and Body Composition of White Shrimp, Litopenaeus vannamei, Larvae.  Pedro Gallardo (Unidad Multidisciplinaria de Docencia e Investigación, Facultad de Ciencias, UNAM, Sisal, Yucatán, Mexico), Gemma Martínez, Gabriela Palomino, Adriana Paredes, Gabriela Gaxiola, Gerard Cuzon and Ruth Pedroza-Islas.  Volume-44, Issue-2, Pages 187-197, April 3, 2013.


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