Effects of probiotics on the survival and growth of Catla catla, Labeo rohita, Cirrhinus mrigala and Pangasius hypophthalmus under polyculture system

Aquaculture is one of the fastest growing food sector of the world and accounts for almost 50% of the world fish production. Sustainable production is affected chiefly by factors such as poor water quality management,nutritionaly imbalanced supplementary feed and the disease incidence. To control of these diseases, indiscriminate use of antimicrobial drugs in fish farming lead to the emergence of antibiotic resistant bacteria. Probiotics play an important role in growth increment and stress mitigation in fish. In the present investigations two types of commercial probiotics (PVS Labs, Andhra Predesh) were used i.e Amruth (fish) as feed probiotic- treatment-1 and Procon- PS (fish) as water and soil probiotics micro feed as feed probiotic on treatment-2 and control pond without probiotics were selected ponds at Kaikaluru of Krishna district, Andhra Pradesh, India. The ponds are stocked with catla (Catla catla), rohu (Labeo rohita), mrigala (Cirrhinus mrigala) and Pangas (Pangasius hypophthalmus) with the stocking ratio of 3: 9: 3: 6. And the culture period goes to one year i.e. August, 2013- July 2014. The results clearly showed that the concentrations of ammonia, nitrite and orthophosphates are low in the experimental ponds compare with control pond. Further the investigations reveal that growth and survival are obtained higher in probiotic treated ponds than that of control pond.