Publication: Profitability of oyster farming systems in selected coastal barangays of Santo Tomas, La Union
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Date
2009-03
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Don Mariano Marcos Memorial State Univeristy - South La Union Campus
Abstract
This study analyzed the profitability of oyster farming systems in
selected costal barangays of Sto. Tomas, La Union based on demographic
profile, financial analysis, cultural and management practices, and
problems encountered by oyster growers using a survey questionnaire.
Data gathered were based on the status of production of oyster growers
from 2007-2008. Analysis of Variance (ANOVA)was used to determine
the significant differences among the four farming systems in terms of
profitability indicators.
Demographic profile of oyster growers showed that most of them
were 41-50 years old, high school graduates, have 5-6 children, and
majority consists of 4-6 household members. They are engaged in oyster
farming for 11-20 years. Most have an annual gross income of Php1000
to 1999 derived from oyster farming, and annual gross income of
Php5000 to 6999 from fishing and caretaking.
Financial analysis showed that most oyster growers have an
average net income of Php5000 to 5999, Return on Investment of
Php1.01-2, payback period of 0.51-1.00 year, breakeven quantity of 50-
60 "limon" (125 kg) and breakeven price of Php 3.01-5.00. Analysis of
Variance (ANOVA)revealed significant differences on the net income,
breakeven quantity and breakeven price of the four farming systems
while no significant differences on the ROI and payback period of the
four farming systems. The tire system is the best in terms of net income
while the best for the breakeven quantity is the tire and hanging system
and the best for breakeven price is the tire, hanging system and stone
farming system.
As to cultural and management practices, majority of oyster
growers used an area less than 25m2 and 1 unit oyster farm. Majority of
the oyster growers used bamboo slats as cultch or spat collector, one
cropping per year and 240 days of culture days as cropping period. As to
marketing practices, most of the oyster growers are selling by wholesale
based on the prevailing price. As to mode of payment, almost all oyster
growers are paid on cash basis. As to harvesting procedure, all oyster
growers harvest partially, and the average volume of harvested oysters
produced per farm unit was more than 100 "limon" (250 kg).
Problems encountered by the oyster growers showed that most of
them have limited capital, lack of technical knowledge, presence of
competitors such as "kampis" (Isognomon ephippium) and typhoon.
Oyster growers are therefore advised to use tire system, however,
its utilization as culture system for oysters must be considered or
regulated due to its potential risks or threats to the water quality of Sto.
Tomas Cove.
Oyster growers are recommended to organize a cooperative for
them to qualify and avail financial assistance or support from
government lending institutions. Oyster growers should establish
linkages with the local government to avail technical assistance thru
trainings or seminars on cultural management of oysters. Schedule the
setting of spat collectors during the months of September - October so
they can harvest in April - May. Removal of "kampis" (Isognomon
ephippium) by handpicking the juveniles/shells must be done to prevent
competitions in space.
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Citation
Fernandez, R. V. V., Verona, R. P., & Villanueva, P. E. (2009) Profitability of oyster farming systems in selected coastal barangays of Santo Tomas, La Union [Unpublished Undergraduate thesis]. Don Mariano Marcos Memorial State Univeristy - South La Union Campus, Agoo, La Union.