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Effect of different biofloc system on water quality, biofloc composition and growth performance in Litopenaeus vannamei (Boone, 1931)

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Relation http://eprints.cmfri.org.in/10614/
 
Title Effect of different biofloc system on water quality,
biofloc composition and growth performance in
Litopenaeus vannamei (Boone, 1931)
 
Creator Rajkumar, M
Pandey, P K
Aravind, R
Alagarsamy, V
Bharti, Vivekanand
Purushothaman, C S
 
Subject Aquaculture
 
Description The experiment was conducted with three biofloc
treatments and one control in triplicate in 500 L
capacity indoor tanks. Biofloc tanks, filled with
350 L of water, were fed with sugarcane molasses
(BFTS), tapioca flour (BFTT), wheat flour
(BFTW) and clean water as control without biofloc
and allowed to stand for 30 days. The postlarvae
of Litopenaeus vannamei (Boone, 1931) with an
Average body weight of 0.15 � 0.02 g were
stocked at the rate of 130 PL m
�2 and cultured
for a period of 60 days fed with pelleted feed at
the rate of 1.5% of biomass. The total suspended
solids (TSS) level was maintained at around
500 mg L
�1 in BFT tanks. The addition of carbohydrate
significantly reduced the total ammonia-
N (TAN), nitrite-N and nitrate-N in water and it
significantly increased the total heterotrophic bacteria
(THB) population in the biofloc treatments.
There was a significant difference in the final
average body weight (8.49 � 0.09 g) in the
wheat flour treatment (BFTW) than those treatment
and control group of the shrimp. Survival
of the shrimps was not affected by the treatments
and ranged between 82.02% and 90.3%. The
proximate and chemical composition of biofloc
and proximate composition of the shrimp was significantly
different between the biofloc treatments
and control. Tintinids, ciliates, copepods, cyanobacteria
and nematodes were identified in all the
biofloc treatments, nematodes being the most
dominant group of organisms in the biofloc. It
could be concluded that the use of wheat flour (BFTW) effectively enhanced the biofloc production
and contributed towards better water quality
which resulted in higher production of shrimp.
 
Date 2015
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/10614/1/Effect%20of%20different%20biofloc%20system%20on%20water%20quality.pdf
Rajkumar, M and Pandey, P K and Aravind, R and Alagarsamy, V and Bharti, Vivekanand and Purushothaman, C S (2015) Effect of different biofloc system on water quality, biofloc composition and growth performance in Litopenaeus vannamei (Boone, 1931). Aquaculture Research. pp. 1-13.