Effect of Coated Vitamin C on the Growth of Macrobrachium rosenbergii (de Man) Juveniles
Effect of Coated Vitamin C on the Growth of Macrobrachium rosenbergii (de Man) Juveniles
Date
2005
Authors
Ittoop, Gijo
Sebastian, M.J.
Nair, CM
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)Cochin
Abstract
Experiment was conducted to study the effect of dietary vitamin C on growth and food
conversion ratio of Macrobrachium rosenbergii juveniles, to determine the optimum dietary
requirement of Vitamin C and to characterize the deficiency syndromes, if any. CVC F-90,
a hydrogenated vegetable oil coated form of vitamin C, with 90% available ascorbic acid
was used as the vitamin source. Growth and food conversion ratio were found to have
significantly improved by incorporating dietary vitamin C. Deficiency syndromes like
incomplete moulting and black lesions at the tip of walking legs were noticed below a level
of 75 mg CVC F-90 / kg of dry diet. The maximum weight gain of 194.92% was obtained
with a dietary level of 150 mg CVC F-90 / kg dry diet. Non-linear regression estimate based
on percentage weight gain showed the optimum requirement to be 200.3 mg CVC F-90 /
kg dry diet that is equivalent to 182.97 mg Ascorbic Acid Equivalent/kg dry diet.
Description
Keywords
Macrobrachium rosenbergii, CVC F-90, vitamin C, ascorbic acid, deficiency syndrome
Citation
Fishery Tech 42(1):31-36