• Dr. S. JANARDANA REDDY

The present study was carried out to evaluate the effect of probiotic bacteria Bacillus subtilis on survival, growth, biochemical constituents and energy utilization in Pacific whiteleg shrimp, Litopenaeus vannamei. Experimental diets were prepared with different concentrations of B. subtilis at the rate of 2%, 4% and 6% and the feed without probiotic bacteria ,0%, considered as control feed. The above diets were fed to L. vannamei for a period of 90 days. The feed influenced on various growth parameters such as survival rate, weight gain, specific growth rate, feed conversion efficiency, and protein efficiency and all are increased significantly at 4% Bacillus subtilis assimilated diet fed PL of shrimp. The biochemical constituents of proteins, amino acids, carbohydrates, lipid and ash and moisture contents were also significantly increased (P <0.05) at 4% B. subtilis assimilated diet in PL of shrimp. From the above results, we can conclude that Bacillus subtilis might have a promising role in shrimp culture. This kind of perspective can be the better option for the establishment of sustainable aquaculture.

Litopenaeus vannamei, Bacillus subtilis, Post Larvae, growth parameters, biochemical constituents, Promising role.

"Impact of Bacillus subtilis on Growth, Biochemical Constituents and Energy Utilization of the Post Larvae of Shrimp, L. vannamei", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 4, page no.42-57, April-2020, Available :http://www.jetir.org/papers/JETIR2004009.pdf

"Impact of Bacillus subtilis on Growth, Biochemical Constituents and Energy Utilization of the Post Larvae of Shrimp, L. vannamei", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 4, page no. pp42-57, April-2020, Available at : http://www.jetir.org/papers/JETIR2004009.pdf