vibrio control_aquaculture

VIBCON is the biological ORIGIN powder with bacillus group strains from C-MAX BIO SCIENCES It is mainly controls vibrio diseases

Recent collapses of the shrimp industry in Vietnam, India, Bangladesh, the Philippines and China have been partly attributed to an increase in the incident of Vibriosis. The industry has also been seriously affected by the emergence of a number of pathogenic viruses notably the Yellowhead baculovirus; however the ability of VIBCON to reduce stress in shrimp through the control of pollutants and the inhibition of Vibriosis will enable the shrimp to withstand viral attacks with a greater expectation of survival. The Fisheries and Oceans, Canada, SeaLane Diseases of Shellfish agrees that maintaining water quality has been proven to decrease the incidence of disease.

Vibrio spp. ferment glucose, test positive on the oxidase test, and grow well in non-selective culture media. [7] Most of the species, especially the pathogenic strains, require sodium chloride, so they should not grow well in fresh water. Electrolytes stimulate their growth, so a nicely balanced shrimp or fish feed will encourage their proliferation. Vibrio spp. prefer a pH from 7 to 9, as they are acid sensitive. Their growth is severely inhibited in an acid environment, as is the growth of Cyanobacteria, another species unwelcome in shrimp and fish farms. Most ponds with a problem with Vibrio spp. have reported a concurrent problem with hydrogen sulfide buildup in the sludge. Vibrio spp. feeds on various forms of sulfur, which includes hydrogen sulfide. The Standard Methods test for identifying pathogenic Vibrio spp. is a two stage procedure. First the bacteria is grown on an alkaline peptone agar. Then it is subcultured on a Thiosulphate, citrate, bile salt, sucrose agar. [4] Examining the nutrients required for Vibrio spp. proliferation, citrate, sucrose, sulfur and salt stand out for the selection of a product to compete with Vibrio spp

FOB:1899
MOQ:100-1kg

Some shrimp farmers have reported a degree of success in limiting the pathogenic strains of Vibrio spp. by using molasses instead of table sugar (sucrose) in their feed., as a means of boosting the carbon to nitrogen nutrient balance, so that the heterotrophic bacteria population increases in the pond, digesting a higher proportion of excess ammonia. Although there is some disagreement in the industry, most environmental engineers notice optimum bacterial utilization of organic carbon pollution, when the nutrient balance matches C= 100, N = 6, and P = 1.2, with a ratio of C:N = 17:1 :and N:P = 5. Shrimp farmers can then manipulate the selective utilization of specific nutrients in a pond by altering the nutrient ratio. For example, when ammonia levels are high, addition of an easily digested carbon source, like molasses, to produce a ratio of C:N = 12 will force the heterotrophic cultures to utilize a higher level of ammonia, present in pond water, to balance the molasses, since molasses is easier to digest than the organic carbon pollutants naturally present (feces, leftover feed, petroleum and fertilizer runoff). Environmental engineers and Alken-Murray have noticed that when heterotrophic bacteria digest petroleum hydrocarbons, they require and utilize a higher level of ammonia-nitrogen than for digestion of simple carbohydrates, sewage,etc. The ideal balance for petroleum remediation is C=100,N=10, P= 2, so although the N:P ratio remains 5:1, the C:N ratio changes from 17:1 to 10:1.

• Item Code: VIBCON