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Subject: Aquaculture × Author: Shyla, G × Start date: 1997 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Effect of cuttlefish liver lipid on the growth of macrobrachium rosenbergii (de Man) juveniles
    (Department of Aquaculture, College of Fisheries, Panangad, 2001) Shyla, G; KAU; Mathew, P M
    Giant freshwater prawn is an important species suitable to culture in both fresh and low saline waters. For successful farming of freshwater prawns, nutritionally balanced cheap diet is a prime necessity. The present study was designed to develop a nutritionally balanced feed for freshwater prawn by using cuttlefish liver as a cheap source of lipid. In this study juveniles of Macrobrachium rosenbergii were used for evaluating the effect of various levels of lipid on growth, food conversion ratio, survival rate, protein utilization and body composition. For this six experimental diets designated as T 1 to T 6 were prepared by using clam meat, groundnut oil cake, wheat bran, tapioca powder, vitamin mineral mixture and cellulose powder. Test diets (T2 to T6) were prepared by adding different levels (l to 5%) of cuttlefish liver lipid with an increment of 1 % by replacing equal amount of cellulose powder. Total lipid content of the diets T\, T2, T3, T4, r, and T6 were 7.53%, 8.61%, 9.85%, 10.73%,12.01% and 13.41%, respectively. Completely randomized design with six treatments each having three replications was used for analyzing the results. Ten numbers of juveniles were randomly distributed in each tank Feeding w<..;c done for a period of 60 days. Test animals fed with a diet containing 2% of cuttlefish liver lipid with a total lipid content of 9.85% showed better growth, food conversion efficiency and protein utilization. But survival rate was not affected by the addition of cuttlefish liver lipid. The protein content of body of test animals was maximum for the treatment, T3 having 2% cuttlefish liver lipid. Lipid and moisture contents of the body were at desirable levels for this treatment. Hence, it is found that, the diet containing 2% of cuttlefish liver lipid with a total lipid of9.85% is good for M rosenbergii.