Effect of Salinity and Quality of Feed on Food Conversion Efficiency in the Post Larvae of the Prawn Penaeus indicus (H. Milne Edwards)

Vijayakumaran, M (1996) Effect of Salinity and Quality of Feed on Food Conversion Efficiency in the Post Larvae of the Prawn Penaeus indicus (H. Milne Edwards). In: The Fourth Indian Fisheries Forum, Proceedings, 24-28 November, 1996, Kochi.

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Abstract

Food conversion efficiency of the postlawae of Penuerrr indiclrs was studied in three salinity regimes (low saline - 16.48 ppt., ambient sea water - 33.05 ppt. and high saline - 44.90 ppt.) using clam meat, a compounded feed and a combination of both as feeds. The survival ranged from 97.5 to 100% in low, 80 to 9510 in ambient and 62.5 to 85% in high saline conditions. Maximum weight increase was recorded in clam-fed postlarvae in 33.05 ppt. The highest net energy conversion efficiency (19.1%) was recorded in clam-fed postlawae in 33.05 ppt. salinity. Protein conversion efticiency was more than net energy conversion efficiency in pellet and mixed food fed postlarvae and lower in the clam fed ones. Protein efticiency ratio varied significantly between salinities and more so between feeds. The study shows that it is energetically expedient to grow postlawae of P intliclrs in salinities ranging from low (16.48ppt) to normal sea water.

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