Abstract:
The study was conducted in the Biofloc Lab, Department of Aquaculture, Sher-eBangla
Agricultural University to assess the potentiality of Macrobrachium
rosenbergii, growth performance and its nutritional quality in Biofloc Technology
(BFT) from July to November, 2020. Total five treatments were applied including T1
(Control),
T-2
(Extract
of Ginger), T-3 (Extract of Amla), T-4 (Extract of Garlic)
and T-5 (Extract of Garlic and higher stocking) with three replications. The initial
mean stock weight of prawn were 3.14±0.19, 3.04±0.27, 3.26±0.16, 3.36±0.06 and
3.02±0.36g in T-1, T-2, T-3, T-4 and T-5 respectively. After completing the research
duration, the highest mean weight gain and percentage weight gain were 10.9±0.3g
and 297.8±16.2% noticed in the T-3. The survival rate was maximum (99.5±0.8%) in
the control treatment. The best FCR and SGR were 1.2±0.1 and 2.1% also noticed in
the T-3. During the research 35% protein containing commercial feed was given and
floc was produced at balanced level which was found 21.7% protein. From the
proximate composition analysis, the highest protein percentage of prawn 74.13±.68%
was found in the T-3. The best growth performance and nutritional value was observed
in T-3 (Extract of Amla) compared to other treatments and also tells the immense
possibility of M. rosenbergii culture in biofloc in the era of aquaculture and microbial
biotechnology for mitigating the demand of animal protein.
Description:
A Thesis Submitted to
The Department of Biotechnology, Faculty of Agriculture
Sher-e-Bangla Agricultural University, Dhaka-1207
In partial fulfilment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
BIOTECHNOLOGY
