Effect of dietary protein levels in the formulated diets on growth and survival of juvenile spiny lobster Panulirus homarus (Linnaeus)

Margaret Muthu Rathinam, A and Kizhakudan, Joe K and Vijayagopal, P and Jayasankar, Vidya and Leslie, V A and Sundar, R (2014) Effect of dietary protein levels in the formulated diets on growth and survival of juvenile spiny lobster Panulirus homarus (Linnaeus). Indian Journal of Fisheries, 61 (2). pp. 67-72.

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Abstract

Effect of dietary protein level on the growth and survival of juvenile spiny lobster Panulirus homarus was evaluated. Pellet diets containing three different protein levels of 340 g kg-1 (diet A), 400 g kg-1 (diet B) and 460 g kg-1 (diet C), and a control diet of clam meat (diet D) with 470 g kg-1 protein were used. The duration of the experiment was 90 days. Survival was 100% for lobsters fed on diet C, 95% for lobsters fed on diet A, and 85% and 60% respectively for lobsters fed diets B and D. The results indicated that diet C gave the highest growth of 0.088 (± 0.10) mm CL followed by diet B with 0.055 (± 0.12) mm and diet A with 0.044 (± 0.10) mm in comparison to the control diet (diet D) with 0.077 (± 0.12) mm growth per day which indicated that next to clam meat, diet C with 460 g kg-1 protein level gave highest growth. The specific growth rate (SGR) was 0.627 ±0.03, 0.547 ± 0.03 and 0.354 ± 0.01 respectively for the diets C, B and A in comparison to the SGR of the clam diet (diet D) which was 0.685 ± 0.05. Diet C with a protein level of 460 g kg-1 gave good survival, SGR and FCR next to clam meat diet (D).

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