Abstract

Effects of a dry pelleted diet on survival, moulting, growth and reproduction were studied during one year in intensive culture of Astacus leptodactylus. This diet was the only source of food during the experiment. After 3 months, the survival rate was 90% of the experimental crayfish. 50% of the population survived after 6 months. The mortality was caused by bacterial and fungal infections detected in the crayfish. The whole reproductive cycle was achieved under these conditions. Egg development was accomplished in 16 weeks, laying occurred on the first days of December, and hatching at the end of March. Diet consumption was estimated at 0.3% of wet body weight per day.

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