Biofloc systems were developed to improve environmental control over production. In places where water is scarce or land is expensive, more intensive forms of aquaculture must be practiced for cost-effective production. There are strong economic incentives for an aqua¬culture business to be more efficient with production inputs, especially the most costly (feed) and most limiting (water or land). High-density rearing of fish typically requires some waste treatment infrastructure. At its core, biofloc is a waste treatment system.
What is SPF?
SPF animals/mother shrimp are special stock of animals that are kept in specific pathogen free facilities under rigorous monitoring system, which are subjected to sensitive and accurate diagnostic methods. The animals are repeatedly bred under controlled conditions to maintain their freedom from specific pathogens and the SPF designation itself is tested on a regular basis over an extended period of time. The SPF animals are not innately resistant to the specified pathogens or infections, although they can possibly be developed as specific pathogen resistant (SPR) species. They are not produced to provide either superior genetic stock or improved culturing attributes such as faster‐growth. However, these characteristics can be incorporated into SPF stock to increase their commercial value. The SPF status of stock animals is lost once the animals are removed from the designated facility even if the animals are not infected or develop any other disease symptoms. The SPF animals may be referred to as “high health” stock once they are transferred to other well‐established unit with history of disease surveillance. Read more
A Revolutionary System of Biosecured Semi-intensive and Intensive shrimp and Fish Farming.
Biofloc technology has become a popular technology in the farming of Pacific white shrimp, Litopenaeus vannamei and now it is used in P. monodon, Tilapia and other fish farming. It is now a very popular system of semi-intensive and intensive shrimp and fish farming with low or no water exchange. It is comparatively much profitable and bio-secured system of aquaculture. The basic technology was developed by Professor Yoram Avnimelech (2000, 2005a&b) in Israel .This system is commercially using with success in shrimp farming in Indonesia, Malaysia and Australia.
Aquaculture is the world’s fastest growing food production sector. However, fish culture is currently suffering from serious losses due to infectious diseases. The use of antimicrobial drugs, pesticides and disinfectant in aquaculture disease prevention and growth promotion has led to the evolution of resistant strains of bacteria. Thus, the research into the use of probiotics for aquaculture is increasing with the demand for environment – friendly sustainable aquaculture. The benefits of such supplements include improved feed value, enzymatic contribution to digestion, and inhibition of pathogenic microorganisms, anti-mutagenic and anti-carcinogenic activity, and increased immune response. These probiotics are harmless bacteria that help the well being of the host animal and contribute, directly or indirectly to protect the host animal against harmful bacterial pathogens. The use of probiotics in aquaculture has got popularity due to the fact that gastrointestinal microbiota of aquatic organisms has been poorly characterized, and their effects are not studied extensively.