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Journal of Animal and Veterinary Advances
Year: 2006  |  Volume: 5  |  Issue: 11  |  Page No.: 995 - 999

The Effect of Supplemental L-Carnitine on Growth, Proximate Composition, Survival and Cold Tolerance of Kuruma Prawn, Marsupenaeus japonicus (Penaeidae: Decapoda) Juveniles

Gokcen Yagcioglu and Mevlut Aktas    

Abstract: Juvenile kuruma prawn, Marsupenaeus japonicus with an initial weight of 1.64±0.69 g were reared on pellets supplemented with 300, 600 and 1200 mg kg-1 L-carnitine for 8 weeks in 1.2 m diameter round concrete tanks. The results showed that L-carnitine supplementation did not influence weight gain and survival rate at the end of the 56 days feeding period compared with the control group (p>0.05). However, muscle proximate composition of the juveniles was significantly affected by L-carnitine supplementation (p<0.05). Lipid level decreased whilst protein content increased in those fed either 300 or 600 mg kg-1 L-carnitine. At the end of the feeding trial, the shrimp exposed to a cold shock to examine their tolerance. No significant effect of L-carnitine on cold tolerance M. japonicus juveniles was observed.

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