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International Journal of Aquaculture, 2013, Vol.3, No.26, 152
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2 Results
2.1 Construction cost and operating cost of the
three ponds
The construction cost of sea cucumber ponds
increased in linear with varied size of the pond
(Figure 2). The relationship between the total input
during the three years and pond size can be described
by the equation of y = 143490Ln(x) + 405559 (Figure
3), while the relationship between the input of juvenile
sea cucumber and pond size can be represented by the
equation of y = 42332Ln(x) + 82695 (Figure 4).
Juveniles of sea cucumber at different size of 2 g, 25 g
and 50 g per ind. required different prices; however,
they all presented with a linear trend (Figure 5).
Figure 2 Variation of construction cost with size of pond
Figure 3 Variation of total input with size of pond during the
three-year culture
Figure 4 Variation of total input of juvenile sea cucumber with
size of pond
Figure 5 Fluctuation of price of sea cucumber during 2007~2011
Note: A, juvenile sea cucumber at the weight of 2 g/ind.; B, juvenile sea cucumber at the weight of 25 g/ind.; C, juvenile sea
cucumber at the weight of 50 g/ind.; D, sea cucumber at the weight of 120 g/ind
2.2 Cost and benefit
The cost and benefit of sea cucumber culture in the
three ponds were described in Table 3, Table 4 and
Table 5. The data of year 1 to year 3 of the three ponds
were gained throughout the culture period. The cost
and benefit of year 4 to year 5 were estimated based
on the trend of the first three years’ data. The data of
year 6 to year 10 came from those of year 5. The inflation
of labor cost, electricity cost, construction cost and
chemical/cleaning product cost were not included.