Shrimp Farming

Rickettsial Infections This infection is not recorded yet from Indian waters, systemic rickettsial infections were reported from cultured P. monodon from Malaysia and Singapore. In P. monodon, the rickettsia occurred within large cytoplasmic vacuoles where it formed-microcolonies of 19 to 33 f.lm in diameter. In heavy infections, cells with rickettsial inclusions were widespread in mesodermally and ectodermally derived tissues, but absent in endodermally derived tissues such as midgut, hepatopancreas and caeca. Experimental treatment using medicated feeds containing 1.5 to 2. 0 kg of oxytetracycline per 1000 kg  offered  was found to be successful in reducing monalities. Vibriosis Vibrio sp. were found to constitute the predominant normal microflora of the culturable species of shrimps. Due to their rich presence in the shrimp's microflora, researchers have found Vibrio sp. as frequent and opponunistic pathogen of the shrimps. The opponunistic pathogenic Vibrio s...

In light of the devastating disease problems currently plaguing the global  shrimp farming  industry, water exchange has apparently become a risky management option for maintaining acceptable water quality. The biosecure shrimp farming system is an evolving culture practice which provides means to achieve a higher degree of biosecurity. Biosecurity in aquaculture is the sum of all procedures in place to protect living organisms from contracting, carrying, and spreading diseases and other non-desirable health conditions, with biotherapeutic agents like probiotics. The Central Institute of Brackish water Aquaculture (CIBA) has developed a Bio secure Shrimp Farming Technology (BSFT) based on three years of study, which includes several yard experiments and two pond trials, involving investigations on utilization of bio therapeutic agents, water and sediment quality parameters in relation to modifications in culture practices. It differs from conventional farming with reg...

Aquaculture is one of the fastest growing food-production sectors but the economic impact that parasites and bacterial, fungal and viral diseases have on the industry is highly significant for the many countries that rely heavily on this industry. Research into the diseases that affect penaeid shrimps that are grown in aquaculture systems is therefore vital, writes Bob Carling for TheFishSite. Two diseases that are currently being actively in Shrimp farming are: 1. The bacterial infection, Acute Hepatopancreatic Necrosis Disease (AHPND) – also called Early Mortality Syndrome (EMS) 2. The fungal infection, hepatopancreatic microsporidiosis caused by Enterocytozoon hepatopenaei (EHP). AHPND Acute Hepatopancreatic Necrosis Disease (AHPND) is a problem of the main countries that farm shrimps – China, Thailand, Vietnam and Malaysia. AHPND can occur in the first 30 days after stocking shrimp into ‘grow-out’ ponds, which is why AHPND is commonly, but ...

Biosecurity is the management practices that prevent non-infected, healthy animal populations from being exposed to infectious or parasitic agents. Common biosecurity measures include: 1. Sanitation:                        Sanitation includes the cleaning and disinfecting of hatcheries, holding facilities, tanks, ponds, handling and vaccination equipment, etc. Cleaning must be done before disinfecting. Disinfectants include chlorine, heat, steam, formalin, and other chemical compounds. All of the chemical disinfectants are toxic, so all equipment should be rinsed well after disinfecting. 2. Vertical disease transmission:                        Vertically transmitted diseases (from parent to offspring) can be prevented by using healthy, disease-free broodstock. 3. Egg disinfection:                     ...