The effects off egg custard on groeth and survival rate of patin bunga (Pangasius sutchi) larvae.

Abstract

This study was carried out to determine the effects of egg custard on growth and survival rate of patin bunga (Pangasius sutchi) larvae. Two days old larvae (6 to 7 mm) were reared for 36 days in 20 L aquarium which filled with 15 L water. The stocking density was 20 larvae L-1• Three replicates were done for each treatments and control. The result showed that larvae fed with egg custard showed the lowest growth rate that were 0.01225 g ± 0.79 for total increment of wet weight and 15.851 mm± 0.768 for total length. The highest growth rate shown by larvae fed with mixed diet ( egg custard and control diet) that were 0.03062 g ± 0.00017 for total increment of wet weight and 23.583 mm ± 1.091 for total length followed by control (Artemia, Moina sp. and commercial pallet), 0.02632 g ± 0.00073 for total increment of wet weight and 21.413 mm± 0.79 for total length. For survival rate, larvae fed with egg custard give the lowest percentage that was 38 % followed by larvae fed with mixed diets (72 %) and control give the highest percentage that was 85 %. From the proximate analysis, egg custard gives the lowest level of nutritional value that were 34.32 % protein, 6.81 % crude lipid, 12.47 % of moisture and 11.05 % ash. There were significant different between treatment and control for wet weight and survival rate where p< 0.05 meanwhile no significant different in total length (p>0.05).