Resource productivity and profitability of milkfish (Chanos chanos) cage culture in five coastal areas along Lingayen Gulf in Pangasinan / by Rosie Salvador Abalos.

By: Contributor(s): Material type: TextTextLanguage: English Publication details: Muñoz, Nueva Ecija : Central Luzon State University, 2005.Description: xviii, 133 pages : illustrations ; 28 cmContent type:
  • text
Media type:
  • unmediated
Carrier type:
  • volume
Subject(s): DDC classification:
  • 597 Ab1 2005
Online resources: Abstract: ABALOS, ROSIE S., Institute of Graduate Studies, Central Luzon State University, Science City of Munoz, Nueva Ecija, Philippines, March, 2005, RESOURCE PRODUCTIVITY AND PROFITABILITY OF MILKFISH (Chanos chanos) CAGE CULTURE IN FIVE COASTAL AREAS ALONG LINGAYEN GULF IN PANGASINAN. Adviser: RUBEN C. SEVILLEJA, Ph.D. The productivity and profitability of milkfish (Chanos chanos) cage aquaculture production in five coastal areas along Lingayen Gulf in Pangasinan was conducted among 250 operators. The operators have an average age of 40 years and household size of six members. The individual operator had | or 2 units of cages. The operators have been engaged in cage culture for about four years and 70% of their income is derived from this operation. Yields and profits generated by operators among the five coastal areas varied due to technological and management applications as well as differences in water quality. Milkfish cage operation is a profitable enterprise with an average net profit of P368.60 per m’ and a rate of return of 165%. Cage, labor and capital provided high productivity values of P939.18/m’, P6.25/man-day, 332%, respectively. Feed conversion rate was 1.45. The estimated Cobb Douglas production function revealed that milkfish cage production in Lingayen Gulf is explained by stocking density, amount of feed, hired labor, length of culture period, and initial stocking weight of fingerlings. Water quality parameters such as dissolved oxygen and salinity also affected yield. Whereas, the profitability of cage culture is significantly affected by the amount of initial investment in cage facilities and the cost of fingerlings. Milkfish cage operators have not maximized the use of inputs. Marginal analysis Suggests that significant inputs especially stocking density, amount of feed and hired labor should be increased at a certain level to maximize profit. Results of the study indicate that there are greater opportunities for increasing production and income in milkfish cage culture. It is recommended that operators should balance their scale of operation and level of material inputs used. The yield models developed in each municipality could be used as a guide to improve productivity and profitability of their operation. Existing operation and managerial practices in milkfish cage culture should be adjusted to maximize production and profit. Dissolved oxygen affects milkfish cage production, therefore, efforts to protect waters from deterioration Should be enforced. The government and the community should join efforts to help maintain the quality of waters in the gulf. Moreover, support mechanism for wider dissemination of improved technologies in milkfish production should be put in place.
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Theses / Manuscripts Theses / Manuscripts Ladislao N. Diwa Memorial Library Theses Section Non-fiction 597 Ab1 2005 (Browse shelf(Opens below)) Link to resource Room use only T-5986 00009698

Thesis (Doctor of Philosophy in Aquaculture) Central Luzon State University

Includes bibliographical references.


ABALOS, ROSIE S., Institute of Graduate Studies, Central Luzon State University, Science City of Munoz, Nueva Ecija, Philippines, March, 2005, RESOURCE PRODUCTIVITY AND PROFITABILITY OF MILKFISH (Chanos chanos) CAGE CULTURE IN FIVE COASTAL AREAS ALONG LINGAYEN GULF IN PANGASINAN.
Adviser: RUBEN C. SEVILLEJA, Ph.D.

The productivity and profitability of milkfish (Chanos chanos) cage aquaculture production in five coastal areas along Lingayen Gulf in Pangasinan was conducted among 250 operators. The operators have an average age of 40 years and household size of six members. The individual operator had | or 2 units of cages. The operators have been engaged in cage culture for about four years and 70% of their income is derived from this operation.

Yields and profits generated by operators among the five coastal areas varied due to technological and management applications as well as differences in water quality.

Milkfish cage operation is a profitable enterprise with an average net profit of P368.60 per m’ and a rate of return of 165%. Cage, labor and capital provided high productivity values of P939.18/m’, P6.25/man-day, 332%, respectively. Feed conversion rate was 1.45.

The estimated Cobb Douglas production function revealed that milkfish cage production in Lingayen Gulf is explained by stocking density, amount of feed, hired labor, length of culture period, and initial stocking weight of fingerlings. Water quality parameters such as dissolved oxygen and salinity also affected yield. Whereas, the profitability of cage culture is significantly affected by the amount of initial investment in cage facilities and the cost of fingerlings.

Milkfish cage operators have not maximized the use of inputs. Marginal analysis Suggests that significant inputs especially stocking density, amount of feed and hired labor should be increased at a certain level to maximize profit.

Results of the study indicate that there are greater opportunities for increasing production and income in milkfish cage culture. It is recommended that operators should balance their scale of operation and level of material inputs used. The yield models developed in each municipality could be used as a guide to improve productivity and profitability of their operation. Existing operation and managerial practices in milkfish cage culture should be adjusted to maximize production and profit. Dissolved oxygen affects milkfish cage production, therefore, efforts to protect waters from deterioration Should be enforced. The government and the community should join efforts to help maintain the quality of waters in the gulf. Moreover, support mechanism for wider dissemination of improved technologies in milkfish production should be put in place.





Submitted to the University Library 08/04/2020 T-5986

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