Use of water flea as the supplementary feed to brine shrimp for nursing on giant tiger prawn, Penaeus monodon
2001
Manop Kanchanaburangura(Rajamangala Institute of Technology. Bangphra Campus, Chon Buri (Thailand). Faculty of Agriculture)
Efficacy of water flea, Moina spp. as the supplementary feed to brine shrimp, Artemia salina for nursing on giant tiger prawn, Penaeus monodon (PL5-PL25) were studied at the Department of Fisheries, Faculty Agriculture at Bangphra, Chonburi during October 8, 1998-April 30, 1999. After the static bioassay test, the salinity of 8-10 ppt, 6-4 hrs LC50 for water flea were used as rearing salinity. At the end of experiment, it was found that supplementation of water flea at 0, 30, 50 and 100 percent of brine shrimp to PL5 to PL25 did not show the differences in total lengths 1.45, 1.52, 1.58 and 1.48 centimeter (p GT 0.05), but the average final weight and survival rates were significantly different, 28.5, 40.1, 35.4 and 33.0 milligram and 58.62, 49.50, 56.53 and 38.58 percent respectively (p LT 0.05). The shrimp fed on 100 percent of water flea turned blue-green and showed the lowest survival rates, 38.58 percent due to canabalish in molting periods. However, the color was diappeared after the shrimp were fed on complete feed for 45 days in closed system pond. The results recommended that substitution of water flea to brine shrimp could be does up to 100 percent, but the ration above 50 percent will effect the colouration and survival rate of the shrimp.
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