Record Details

Application of bio-flocculating agent in inoculum enhances quality of biofloc and influences growth, feed utilization and stress responses of GIFT tilapia reared in-situ.

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Application of bio-flocculating agent in inoculum enhances quality of biofloc and influences growth, feed utilization and stress responses of GIFT tilapia reared in-situ.
Not Available
 
Creator Not Available
 
Subject Biofloc Chitosan GIFT Tilapia Bioflocculating agent
 
Description Not Available
An experiment was conducted for in-situ rearing of GIFT tilapia to evaluate the efficacy of bioflocculating agent
chitosan at various dosages in the inoculum. Growth and physiological responses of GIFT Tilapia was studied in a
biofloc system developed with a bioflocculating agent based inoculum. A dose optimization study was carried out
to determine the optimum dose of chitosan in the inoculum using 3 different doses viz. 30, 60 and 90 ppm. Based
on the results of dose optimization, the second experiment was conducted using 10, 20 and 30 ppm of chitosan
dosage in the inoculum designated as T1, T2, T3, respectively, and one control (without chitosan) with in-situ
rearing of tilapia. The tanks (12 Nos) were stocked randomly with an equal number of fishes of initial mean
weight (1.70 ± 0.36 g) at 50 numbers per 250 L of water and C: N ratio was maintained at 15:1 using tapioca
flour as carbon source. The biofloc developed with the inoculum using 30 ppm (T3) chitosan showed highest floc
volume, highest flocculation activity (83.82 ± 1.84%) and highest total suspended solids level (550.67 ± 32.23
mg L - 1). Higher body weight gain (11 g), specific growth rate, feed conversion ratio (1.5) and feed efficiency
ratio were observed to be significantly similar for 20 and 30 ppm chitosan supplemented biofloc groups, where as
they indicated higher response compared to 10 ppm (T1) and 0 ppm (C) chitosan supplemented group. The
activities of amylase was increased in T2 and T3 groups, while the activities of hepatic and gill superoxide
dismutase (SOD) and lactate dehydrogenase (LDH) were significantly lower in T1, T2 and T3 groups compared to
control. However, activities of protease, lipase and catalase, serum cortisol and glucose were non-significant. The study concluded that the introduction of bioflocculating agent chitosan at a dosage of 20–30 ppm in the inoc- ulum for in-situ biofloc technology can enhance growth, feed utilization, amylase activity and ameliorating stress in GIFT tilapia.
Not Available
 
Date 2023-05-16T02:55:24Z
2023-05-16T02:55:24Z
2022-02-14
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/77290
 
Language English
 
Relation Not Available;
 
Publisher Elsevier