Abstract: Siberian sturgeon (Acipenser baerii) larvae were raised with Lim nodrilus sp., Artemia nauplii, Moina sp., and artificial commercial di et for 30 days to investigate the effects of different initial feeding diets on the growth, survival, and body biochemical composition of the larvae. The results showed that A. nauplii was the best initial feeding diet, with the survival rate of A. baerii larvae being significant higher (9667%) than the others. Feeding with Limnodrilus sp. gave the highest growth rate of A. baerii larvae, while fee ding with artificial commercial diet gave the lowest efficiency on the growth ra te and survival rate of the larvae. The larvae raised with different diets had s ignificantly different body biochemical composition. After fed with artificial c ommercial diet, the larvae had the highest moisture content but the lowest crude protein and crude ash contents. Taking A. nauplii as the initial feeding d iet and then feeding with Limnodrilus sp. could gave the ideal growth and survival rates of A. baerii larvae.

Key words: flue-cured tobacco, development stage model, plant physiological development period, growing degree days.