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Three different C: N ratios for Pacific white shrimp, Penaeus vannamei under practical conditions: Evaluation of growth performance, immune and metabolic pathways

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Title Three different C: N ratios for Pacific white shrimp, Penaeus vannamei under practical conditions: Evaluation of growth performance, immune and metabolic pathways
Not Available
 
Creator Saranya Chakrapani
Akshaya Panigrahi
Jayashree Sundaresan
Mullaivanam R. Sivakumar
Rajesh Palanisamy
Vinodh Kumar
 
Subject Biofloc
C/ N ratio
growth performance and metabolic pathway gene expression
Penaeus vannamei
 
Description Not Available
A 28-day experiment was carried out to evaluate different C/N ratios (10:1, 15:1 and
20:1) on growth performance, water quality, survival rate and gene expression related
to metabolic pathways of Penaeus vannamei in a biofloc system. To maintain the C/N
ratio of the feed input, different carbon sources (molasses, rice bran and wheat flour)
in combination were applied after fermentation for a day with biofloc consortium.
Results showed that shrimps reared in C/N 10 (630 mg) and C/N 15 (646 mg) biofloc
systems showed significantly (p = .0229 and .0263) higher growth when compared
to C/N 20 (528 mg) and control (374 mg). With regard to the production of extracellular
enzymes, protease, lipase and xylanase were found predominantly in colonized
bacteria isolated from biofloc treatments, whereas amylase was commonly found in
all the treatments. The proPO activity was considerably increased in C/N 10 and 15
treatments than C/N 20 and control. The ranges of relative expression levels of potential
genes entailed in metabolite pathway like hexokinase (HK- 6.57–8.17), pyruvate
kinase (PK-5.79–7.96), crustacean hyperglycaemic hormone (CHH- 6.99–7.66)
and fatty acid synthase (FAS- 6.57–8.86), triacylglycerol lipase (TGL-6.99–8.66) and
immune gene (Toll receptor- 4.57–4.86) fold up-regulated expression were observed
in the biofloc treatments than that of the control. The overall findings indicate that
the rearing of P. vannamei shrimp in C/N 10 and 15 biofloc systems could improve
the growth performance, water quality and development of immune and metabolic
responses.
Not Available
 
Date 2022-04-25T10:41:48Z
2022-04-25T10:41:48Z
2020-11-19
 
Type Journal
 
Identifier Chakrapani S, Panigrahi A, Sundaresan J, Sivakumar MR, Palanisamy R, Kumar V. Three different C: N ratios for Pacific white shrimp, Penaeus vannamei under practical conditions: Evaluation of growth performance, immune and metabolic pathways. Aquaculture Research. 2021 Mar;52(3):1255-66.
1365-2109
http://krishi.icar.gov.in/jspui/handle/123456789/71692
 
Language English
 
Relation Not Available;
 
Publisher John Wiley & Sons Ltd