BIOFLOC TECHNOLOGY- FARMERS FRIENDLY CONCEPT TO INCREASE WHITE LEG SHRIMP Penaeus vannamei PRODUCTION IN THE OUTDOOR LINED POND

Aquaculture is  one of vital sector to  recompense foo d demand. Although, some improper inten sified practices leads to diseases and effluent discharge, this circumstances would adversely affect culture species, target production and environment. To curtail this problem, sector should adopt right technologies. Among that, biofloc technology can fulfil the necessities of aquaculture industry without annoying environment.  The present review explored the necessity of biofloc with special reference to farmers friendly technology to enhance the shrimp production

Shrimp (Penaeus vannamei) culture is highly profitable business, whilst risk based culture, it must be intensively cared to success the culture.  During culture period, several problems aroused such as  poor biosecurity, over/under feed input, sludge accumulation and lack of management paves water pollution which leads to disease occurrence . For example, those who are practicing  normal  shrimp culture in 3 hectare pond with high operational cost, instead of that, if would have been adopting biofloc technology in 1 hectare pond with less operational cost can get more production than normal culture practice.

Biofloc technology is the right  choice to shrimp farmers. Intensive aeration (heartbeat) and supplementation of carbon source (heart) is the base of biofloc development. Biofloc has been continuously maintained by ideal carbon nitrogen ratio in the culture water. For example, 10 to 20ppm of carbon source added to neutralize the 1ppm of total ammonia in the culture system along with consideration of floc volume (15 ml/l) , water coloration and climatic condition. While using this technology the following benefits can be obtain ed which enhance water quality and conserve water budget, more than 20% feed input/cost can be minimized, sludge can be recycled, more than 40% medicine cost can be minimized due to presence of beneficial bacteria which degrade the activity of pathogenic bacteria. Hence, biofloc technology is boon to aquaculture sector to increase the shrimp productio n without annoying environment. The remaining contents will be presented during conference.