Growth of the post-larvae shrimp Macrobrachium vollenhovenii (Herklots, 1857) fed with food riches in earthworms and termites.

Abstract

The growth of the post-larvae in captivity depends quantitatively and qualitatively on food rich in protein. The present study was aimed to test four (04) feed rations on the growth of post-larvae in captivity. The pilot R1 ration (Raanan) is obtained in business, the R2 ration contains cornstarch and the rations R3 and R4 are respectively made up with the earthworms and termites flour. The post larvae weight of 0.23 ± 0.02 g are bred for ninety days and simultaneously in twelve vats (0.23 m3 ) and twelve basins (1 m3 ). The average values obtained for the weight in vats are 0.6 ± 0.15 g; 0.41 ± 0.25 g; 0.40 ± 0.13 g; 0.35 ± 0.1 g respectively for shrimp batches corresponding to rations R1, R2, R3 and R4. In basins, these weights are 0.45 ± 0.22 g for R1 and R2 and 0.40 ± 0.20 g and 0.31 ± 0.18 g, respectively, for R3 and R4. The survival rate varies between 42.02% ± 31.45 and 65.22 ± 17.39% in vats and 10.33 ± 4.73% and 20.67 ± 2.08% in basins. The high values of the Food Conversion index from 1.44 g/g to 2.8 g/g and the Proteinic Rate of Efficiency from 0.50 g/g and 0.98 g/g confirm the low rations performance in basins.