| Author | Sujit Keawchum |
| Call Number | AIT Thesis no. AE-94-26 |
| Subject(s) | Shrimp culture
|
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of
Master of Science, School of Environment, Resources & Development |
| Publisher | Asian Institute of Technology |
| Abstract | Juveniles of Penaeus monodon with a mean weight of 0.32 g were stocked at 50
PL/m3 in experimental tanks which involved two prototypes of culture system : (1) a
closed system without water exchange and (2) open system with regular water
exchanges. The study was to determine the feasibility of intensive shrimp culture in
tanks with artificial substrate as biological filter and using of commercial effective
microorganisms to maintain water quality throughout the culture period in order to
convey the concept of bioremediation for intensive shrimp culture.
After 84 days of culture period, the culture system provided with 10 m2 of
specific surface area (SSA) of artificial substrate per m3 of culture water (10m2
SSAm-3)
gave significantly greater shrimp weight of 15.89 g than that with only 5m2
SSA m·3 of
substrate or none substrate of 12.65 g and 11.41 g, respectively (P<0.01). The average
survival rate of shrimp in closed culture system was 86.3 % which was not difference
between treatment(P>0.05). Survival rate of shrimp in open culture system was 97.0 %.
Adding commercial bacteria suspension to the culture system was not beneficial
to improve water quality. There was no significant difference between treatments in all
parameter analyzed, such as total ammonia-N, nitrite-N, chemical oxygen demand, total
bacteria count, etc. In both systems, the accumulation of nitrogen compounds (total
ammonia-N, nitrite-N and nitrate-N) slowly occurred in the culture tanks after 56 days
of culture period.
Providing of 10 m2 of specific surface area (SSA) of substrate per m3 of water
(10 m2 SSA/m3
) in the culture system resulted in better of shrimp growth and water
quality than application of commercial bacteria suspension (P<0.05).
Water exchange in open culture system lowered the level of ammonia-N and
nitrite-N comparably faster than biological assimilation in closed culture system without
addition of substrate (P<0.05). |
| Year | 1994 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Lin, Chang Kwei
|
| Examination Committee(s) | Szyper, James P. ;Little, David C.
|
| Scholarship Donor(s) | Government of Germany |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 1994 |