| Author | Tippawan Tantawanich |
| Call Number | AIT Thesis no.AQ-06-28 |
| Subject(s) | Abalone culture--Thailand
|
| Note | A thesis submitted in partial fulfillment of the requirements for the
degree of Master of Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. AQ-06-28 |
| Abstract | The tropical abalone Haliotis asinina, also called donkey-ear abalone, is a highly
valued marine mollusk with very high export potential but its culture techniques still need
to be developed. An experiment was conducted to investigate the effects of stocking
density and shelter surface area on the growth and survival of abalone reared in fiberglass
tank (0.50 m2 in bottom area) with a semi-flow through system (water volume = 0.2 m3
).
Abalone with average initial body weight of 1.42 g and shell length 18. 7 mm were stocked
at stocking densities of 100, 200 and 300 abalone m-2
• One, two or three pieces of Vshaped PVC shelters were added to the tanks during the culture period. Abalone were
provided with artificial diet (25% crude protein) at a feeding rate of 2.0-2.5% of body
weight daily for 201 days (6.7 months).
In the first 5 months of culture, there was no significant difference (P>0.05) in
specific growth rates (SGR) in body weight, shell length, shell width among treatments. At
the end of culture period (March), there was no significant difference in specific growth
rates among three shelter surface areas (0.09, 0.18 and 0.27 m2
) at stocking densities of
100 and 200 pcs. m2
, but at 300 pcs. m2 with three shelters (0.27 m2
) abalone had
significantly higher (P<0.05) specific growth rates for body weight and shell length. Also
at 300 pcs. m2 with two shelters (0.18 m
2
), abalone had significantly higher specific
growth rate for shell length at the end of culture period. There was no significant
difference in specific growth rate for shell width at different stocking densities and shelter
surface areas throughout the culture period. These results indicate that at higher stocking
density of 300 pcs. m2
, at least 3 shelters (0.27 m
2
) are needed on the sixth month, since
growth decreases with increasing density but increases with increasing shelter surface area.
In this experiment, abalone survival was not affected by stocking density and shelter
surface area. This may be explained that even if abalone cannot feed enough as a result of
stacking due to lack of shelter surface area, they can still survive but not grow well. |
| Year | 2006 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AQ-06-28 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Aquaculture and Aquatic Resources Management (AQ) |
| Chairperson(s) | Gallardo, Wenresti G. ;Ikejima, Kou ; |
| Examination Committee(s) | Bart, Amrit ;Jarayabhand, Padermsak; |
| Scholarship Donor(s) | Royal Thai Government Fellowship
Thai Research Fund ; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2006 |