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breeding in T 2 and three complete breeding in T 3 within 4 h. Two size grading were generally
were observed. The highest latency period (11-14
hrs), fertilization rate (66%), hatching rate
(92.67%) and rate of viable larvae (53.44%) were
found with T 3. Therefore, T 2 (Ovaprim) was found
to be the best hormone at the rate of 0.5 ml/kg
body weight for the successful breeding of the
black carp in hatchery condition.
557 KAMAL, M. & ISLAM, M.N. (Dept. of
Fisheries Technology, Bangladesh Agricultural
University, Mymensingh). HACCP based
management system for improving quality of
freshwater giant prawn, Macrobrachium
rosenbergii. Bang. J. Fish. Res., 2005, 9(1), 65-67.
The study was conducted on the present status of
HACCP based quality management system of
golda, Macrobrachium rosenbergii farms in Fulpur
region of Mymensingh. Information was collected
on general condition of farms, culture systems and
post-harvest quality management. In almost all
farms, there is no or inadequate infrastructure
facilities such as, road access, electric supply,
telecommunications, ice, feed storage facility,
vehicle for golda transportation, washing and toilet
facilities. The problems associated with sanitation
and hygiene was: widespread use of cow dung,
poultry manure and construction of open toilet
within the vicinity of prawn culture pond. Different
grades of commercially available and locally
prepared feeds were used for golda culture in the
pond. Golda post-larvae (PL) of 40-50 days old
were stocked with carp species. The price of golda
PL ranged from Tk. 1.00 to Tk. 1.25/piece. The
pond size varied from 50 decimal (0.2 ha) to 2.5
acre (1.0 ha) with an average depth of 2-2.5 m. The
culture period of golda varied from April-May to
November-December and survival rate ranged
between 75 and 80%. Production of golda varied
from 250-500 kg/acre (625-1,250 kg/ha).
Harvested golda were transported to city market
196
followed during pricing, e.g. Tk, 500 to 550/kg for
> 100 g size and Tk. 300/kg for <100 g size. The
cost-benefit ratio was found to remain around
1:1.25 depending on availability of PL. Water
quality parameters such as, water temperature, pH,
dissolved oxygen, total alkalinity and chlorophylls
in five golda farms in Fulpur region were
o
monitored. Water temperature ranged from 29 C to
o
33 C, dissolved oxygen from 2.28 to 4.13 mg/1,
pH between 6.65 and 7.94, alkalinity from 44 to 70
µg/1 and chlorophylla concentration from 61.88 to
102.34 µg/l in the five investigated ponds. The
Aerobic Plate Count (APC) of the water sample
was within the range of 2.0 × 10 – 2.96 × l0
6
7
CFU/ml and of soil samples within the range of 6.9
× 10 -7.73 × 10 6 CFU/g. Streptococcus sp.,
6
Bacillus sp., Escherichia coli, Staphytococcus sp.,
Pseudomonas sp. and Salmonella sp. were isolated
from pond water and sediment. Different feed
samples used for golda was analyzed for proximate
composition. Moisture content ranged around
14.14-21.22%, crude protein 20.55-44.1%, lipid
4.67-12.54% and ash 9.7-27.69%. The TVB-N
values and peroxide values of feeds used as starter,
grower and fish meal were found within the
acceptable ranges and samples were free from
pathogenic organisms. A training was organized
for the golda farmers on HACCP, water quality
and post-harvest quality management of prawn.
558 KAMAL, M. & ISLAM, M.N. (Dept. of
Fisheries Technology, Bangladesh Agricultural
University, Mymensingh). Improved handling and
preservation of freshwater giant prawn,
Macrobrachium rosenbergii for producing safe
and wholesome products. Bang. J. Fish. Res.,
2005, 9(1), 61-63.
Studies were undertaken to evaluate the quality
changes in freshwater giant prawn,
Macrobrachium rosenbergii during various storage