2025/05/23 by Aliasgari, Elahe
#Litopenaeus vannamei #biofloc #probiotic #shrimp farming
paper · doi:10.71735/amc.2024.5548
Due to the limited natural resources, applied in the aquaculture industry, less dependent methods have been used. The comprehensive system of bacteria plays an important role as a water purifier from organic matter and toxic nitrogen compounds and waste into food. The method is fieldwork and taking notes of the results. In the form of four treatments (350 liters) with three repetitions in each treatment in the form of 1. Native probiotics 2. Commercial probiotics 3. Native and commercial probiotics 4. Control with specified concentration. Preparation of western white shrimp larvae and preparation of Bacillus subtilis and Bacillus licheniformis in two forms of traders and natives (from the digestion of juvenile huso) and study of shrimp hemolymph (glucose, cholesterol, uric acid, protein) and weight, length, length of carapace and SGR. During the test, the nitrogen-to-carbon ratio is kept constant at around 15.5. Significant changes occurred following the use of both native and commercial probiotics in the studied indices, including the most significant increase in total protein from 5.39 g to 9.32 g and shrimp weight from 10 g to 13.26 and a decrease in coefficient Food conversion up to 40%, while increasing the fertility of shrimp, followed by an increase in uric acid to 1.52 grams. Native probiotics improved indices such as immunoglobulin up to 120 mg with a significant difference compared to other treatments, improved feed length, and conversion ratio, and total weight and total protein.