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Fresh liver slices were shock-frozen in liquid nitrogen, then carefully powdered in a suitable kitchen mixer. The moistened powder had been given to larvae, kept in buckets (600 ind/buck). Comparison for food utilization was made in the 1st experiment with sibs of silver carp bighead carp hybrids fed living zooplankton and an artificial casein-gelatin diet in freeze-fractured form. After 2 weeks,...
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