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Nutritional value of fresh processed and formulated diets for the green mud crab Scylla serrata juveniles

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Relation http://eprints.cmfri.org.in/7659/
 
Title Nutritional value of fresh processed and
formulated diets for the green mud crab
Scylla serrata juveniles
 
Creator Unnikrishnan, U
 
Subject Fish Nutrition
Theses
Crabs
 
Description Among the crustacean candidate species for aquaculture, mud crabs of the
genus Scylla are gaining importance as alternative to tiger shrimp especially in the
Asian scenario, in the context of consecutive white spot disease outbreaks rendering
shrimp culture, a risky affair. Literature currently available on mud crab culture has
scanty information on the nutritional requirement of the species, and little scientific
basis on feed management. Currently a number of locally available fresh or semiprocessed
feedstuffs including kitchen left-over and animal entrails are used globally
for mud crab aquaculture. The emerging scenario of mud crab culture demand
scientifically designed fresh and processed feed combinations and formulated off the
shelf-diets.
The survey on mud crab farming made during the study clearly indicate the
least concern on the feeds used and feed management. Currently farmers widely
use fresh, salted and dried trash fish being a cheap source, irrespective of the
quality. Feeding with fresh and cooked animal entrails was also practiced by some
farmers. The use of fresh and cooked molluscan meat like clam meat was recorded
rarely. The evaluation of currently used feeds and their combinations were done with
a view to identifying the best feeds among the presently used feeds to maximize the
feed utilization thereby reducing the wastage and to support faster growth rates of
mud crabs. The studies on energy budget were aimed at gathering information on
energy requirements and utilization at various moult stages and to optimise feed
rationing and maximize feed utilization. Feeding trials with pellet diets were
conducted to determine the protein requirement and to evaluate various diets
supplemented with different lipid sources singly and in combination. The information
generated from the studies on energy budget, protein requirement and evaluation of
lipid sources can be used in formulating nutritionally adequate, eco-friendly, off-the
shelf pellet feed for mud crab culture.
 
Date 2006
 
Type Thesis
NonPeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/7659/1/TH-151.pdf
Unnikrishnan, U (2006) Nutritional value of fresh processed and formulated diets for the green mud crab Scylla serrata juveniles. ["eprint_fieldopt_thesis_type_phd" not defined] thesis, Cochin University of Science and Technology, Cochin.