of growth and proximate composition in
pelagicus juveniles fed with selected feeds in
aquaculture system (RAS)
Kohinoor, A. Arshad*, S.M.N. Amin, Mohd. S. Kamarudin and M.A. Sulaiman
Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, 43400 UPM
Serdang, Selangor Darul Ehsan, Malaysia
Author E-mail: firstname.lastname@example.org
Paper received : 15.07.2017
Revised received : 20.10.2017
Re-revised received :
Accepted : 28.12.2017
Aim: The experiment was
conducted to determine the suitability of using scad fish, Acetes shrimp
and common squid for the direct and indirect application as diets for the
juvenile rearing of the blue swimming crab Portunus pelagicus.
Methodology: A total of 54
crab juveniles with an initial weight of 2.46 ±0.94 g were randomly stocked
in triplicate at 6 crabs per 60 l tank (0.26 m²) experimental units and fed
twice daily with three different types of feed namely scad fish, squid tissue
and frozen Acetes shrimp for a period of 31 days.
Results: At the end of the
trail, ammonia and nitrite-nitrogen compound were significantly higher in
Acetes shrimp fed group. It is found that final body weight (g) of P.
pelagicus was significantly higher when fed with squid, however no
significant differences were noticed between scad fish and Acetes shrimp fed
groups. The whole body proximate composition was similar in all the diet fed
individuals except the level of lipid which was higher in squid compared to
scad fish and Acetes shrimp. Significantly (p<0.05) better food conversion
ratio (FCR) was observed in juvenile crab fed with squid even though scad
fish possessed the highest crude protein of 83.33%.
Interpretation: Overall, the
results suggested that squid meal could be recommended for P. pelagicus
juvenile culture. Hence, squid meal may be incorporated in crab artificial
diet as protein source to attain better survival and growth.
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