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Production and hatching rate of resting egg of freshwater rotifer, Brachionus calyciflorus pallas fed the different diets

Park, H.G.; Kwon, O.Nam; Park, K.Y.; Kim, K.Y.

Journal of the Korean Fisheries Society 33(3): 225-229

2000


Accession: 011202672

This study was performed to investigate production and hatching rate of the resting egg of freshwater rotifer, Brachionus calyciflorus fed the 5 different diets (ESP, freshwater Chlorella, baker's yeast, the mixture of 70% ESP and 30% freshwater Chlorella, and the mixture of 30% baker's yeast and 70 % freshwater Chlorella). The highest productions of resting eggs were 123.3 eggs/ml and 126.7 eggs/ml in the mixture of 70% ESP and 30% freshwater Chlorella, and the mixture of 30% baker's yeast and 30% and 70% freshwater Chlorella, respectively, which were significantly better than ESP, freshwater Chlorella or baker's yeast alone (P<0.05). Hatching rate of the resting eggs from rotifer fed the mixture of 70% ESP and 30% freshwater Chlorella was the highest, 71.9% although this value was not significantly different compared with the mixture of 30% baker's yeast and 70% freshwater Chlorella, and freshwater Chlorella (P<0.05). The results showed that the mixture of baker's yeast or ESP with the freshwater Chlorella seemed to be the best feeding regime for the production and hatching rate of resting egg of freshwater rotifer.

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