Biofloc Composition

Furthermore though not essential there was no cysteine found in any of the biofloc group. At the end of the study an increase in the percentage of protein 47 and a reduction in the percentage of lipids 2 was observed when compared with values recorded at the beginning of the study.

Vannamei Shrimp Pd Shrimp Fresh Meat Fresh Fish Photography

Fish and shrimp are grown in an intensive way minimum of 300 g of biomass per square meter 7 with zero or minimum water exchange.

Biofloc composition. The biofloc quality in terms of fish nutrition containing 38 protein 3 lipid 6 fiber 12 ash and 19 kJ g 1 energy on dry matter basis in the present study was appropriate for tilapias except for the very low crude lipid levels. Primary biochemical composition of bioflocs The crude protein content of the bioflocs was determined as nitrogen N 625 with the Kjeldahl method. Tintinids ciliates copepods cyanobacteria and nematodes were identified in all the biofloc treatments nematodes being the most dominant group of organisms in the biofloc.

Biofloc technology BFT is as an environmentally friendly aquaculture technique based on in situ microorganism production. Each treatment was performed in triplicate. Therefore biofloc can complement the diet of reared animals which uses the natural productivity in the culture system as a feed source Wasielesky et al.

The crude lipid content of the bioflocs was determined by ether extraction using a Soxhlet apparatus. Biofloc consists of a mix of chemoautotrophic and heterotrophic bacteria and photoautotrophic algae. Biofloc particles contain a variety of microorganisms such as bacteria microalgae protozoa and zooplankton Ray et al.

The biofloc was further analysed to see whether it contained essential fatty acids for the fish. The present study evaluates the biofloc technology BFT in light-limited tank culture of Nile tilapia Oreochromis niloticus. Two biofloc treatments and one control were managed in 250 l indoor tanks.

005 were recorded for ash and fiber. Biofloc consists of microorganisms such as heterotrophic bacteria algae dinoflagellates and diatoms fungi ciliates flagellates rotifers nematodes metazoans and detritus that conglomerate together and perform symbiotic processes to maintain the water quality maintain bio-security support high density of shrimp culture and reduce water exchange in the aquaculture system. BFT fed a diet of 35 crude protein CP BFT fed a diet of 24 CP and clean water control without biofloc with 35 CP.

The proximate and chemical composition of biofloc and proximate composition of the shrimp was significantly different between the biofloc treatments and control. The average values between the drying methods for protein lipid total NFE and energy were also significantly different while no significant differences p. In other words biofloc is a symbiotic process that includes confined aquatic animals heterotrophic bacteria and other microbial.

The nutritional composition of the biofloc varied with time. Biofloc technology BT is defined as the use of aggregates of bacteria algae or protozoa held together in a matrix along with particulate organic matter for the purpose of improving water quality waste treatment and disease prevention in intensive aquaculture systems. Among the chemoautotrophs one group of nitrifiers oxidizes ammonium NH4 to nitrite NO2 and another oxidizes nitrite to nitrate NO3.

The amino acid composition of the biofloc differed amongst biofloc size groups. In general biofloc seems to be rich in valine lysine leucine phenylalanine and threonine but deficient in methionine. There were 2728 polyunsaturated 2829 monounsaturated 3035.

A total of 1800 Litopenaeus vannamei juveniles 287 001 g were cultured in biofloc technology with a density of 200 shrimp m 2 and fed with three isoproteic experimental diets at different lipid levels 85 g kg 1 95 g kg 1 and 105 g kg 1. Biofloc Floc PreparationContact With Me 601116362634 Imo Whatsappfor contact with meFallow me on google plus. Statistically there were significant differences within the means of the two biofloc sources in terms of their proximate compositions p 005.

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