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Costs of management practices of Asian seabass (Lates calcarifer Bloch, 1790) cage culture in Malaysia using stochastic model that includes uncertainty in mortality

With intensification, Asian seabass are prone to infectious diseases such as vibriosis that could lead to additional costs in the grow-out cage culture system. Other costs include feeds, fingerlings and antibiotics. To improve awareness to the costs, the objective of this study is to estimate the co...

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Main Authors: Mohd Nor, Norhariani, Mohd Yazid, Siti Hajar, Mohd Daud, Hassan, Azmai, Mohammad Noor Amal, Mohamad, Nurliyana
Format: Article
Language:English
Published: Elsevier 2019
Online Access:http://psasir.upm.edu.my/id/eprint/81044/1/ABSTRACT.pdf
http://psasir.upm.edu.my/id/eprint/81044/
https://www.sciencedirect.com/science/article/pii/S0044848618319276
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spelling my.upm.eprints.810442022-07-19T08:26:13Z http://psasir.upm.edu.my/id/eprint/81044/ Costs of management practices of Asian seabass (Lates calcarifer Bloch, 1790) cage culture in Malaysia using stochastic model that includes uncertainty in mortality Mohd Nor, Norhariani Mohd Yazid, Siti Hajar Mohd Daud, Hassan Azmai, Mohammad Noor Amal Mohamad, Nurliyana With intensification, Asian seabass are prone to infectious diseases such as vibriosis that could lead to additional costs in the grow-out cage culture system. Other costs include feeds, fingerlings and antibiotics. To improve awareness to the costs, the objective of this study is to estimate the costs of Asian seabass that include endemic vibriosis. First, farm-level costs were estimated using a questionnaire performed to 20 monoculture of Asian seabass farms. Second, the costs of grow-out at cage culture Asian seabass in 210 days was estimated using stochastic bioeconomic model. Model developed included uncertainty in vibriosis prevalence, mortality and variation in body weight to be estimated as costs. Inputs in the model were based on literature, expert opinion and outcomes in the current survey. Survey results showed that the participating farms did not have Malaysian Good Aquaculture Practices (GAqP) certificate. The median cost to produce 1,500 tails of fish (1 kg/tail) in 12 months was USD 4,688/farm/cycle. The stochastic model estimated total cost to produce a tail of fish (1,079 g/tail) as USD 3.61 consisting of variable costs such as feeds (USD 3.51), fixed costs such as maintenance (USD 0.12) and provision costs due to mortality (USD 0.35). Total vibriosis costs (mortality, diagnosis and treatment costs) were USD 0.24/tail. The total cost was sensitive to change in feed conversion ratio (FCR) and mortality due to other causes. Improving farm efficiency and increasing production cycle to 1.73 times/year is necessary to lower the costs. Government should give more priority in research and development of cheaper feed alternatives, probiotics and vaccines. Farmers should be aware of the costs and make a better decision, for example improving FCR and biosecurity to improve profitability. Care must be taken to interpret the findings as the costs of grow-out Asian seabass is different for each farm due to different management practices. Elsevier 2019 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/81044/1/ABSTRACT.pdf Mohd Nor, Norhariani and Mohd Yazid, Siti Hajar and Mohd Daud, Hassan and Azmai, Mohammad Noor Amal and Mohamad, Nurliyana (2019) Costs of management practices of Asian seabass (Lates calcarifer Bloch, 1790) cage culture in Malaysia using stochastic model that includes uncertainty in mortality. Aquaculture, 510. pp. 347-352. ISSN 1365-2109 https://www.sciencedirect.com/science/article/pii/S0044848618319276 10.1016/j.aquaculture.2019.04.042
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description With intensification, Asian seabass are prone to infectious diseases such as vibriosis that could lead to additional costs in the grow-out cage culture system. Other costs include feeds, fingerlings and antibiotics. To improve awareness to the costs, the objective of this study is to estimate the costs of Asian seabass that include endemic vibriosis. First, farm-level costs were estimated using a questionnaire performed to 20 monoculture of Asian seabass farms. Second, the costs of grow-out at cage culture Asian seabass in 210 days was estimated using stochastic bioeconomic model. Model developed included uncertainty in vibriosis prevalence, mortality and variation in body weight to be estimated as costs. Inputs in the model were based on literature, expert opinion and outcomes in the current survey. Survey results showed that the participating farms did not have Malaysian Good Aquaculture Practices (GAqP) certificate. The median cost to produce 1,500 tails of fish (1 kg/tail) in 12 months was USD 4,688/farm/cycle. The stochastic model estimated total cost to produce a tail of fish (1,079 g/tail) as USD 3.61 consisting of variable costs such as feeds (USD 3.51), fixed costs such as maintenance (USD 0.12) and provision costs due to mortality (USD 0.35). Total vibriosis costs (mortality, diagnosis and treatment costs) were USD 0.24/tail. The total cost was sensitive to change in feed conversion ratio (FCR) and mortality due to other causes. Improving farm efficiency and increasing production cycle to 1.73 times/year is necessary to lower the costs. Government should give more priority in research and development of cheaper feed alternatives, probiotics and vaccines. Farmers should be aware of the costs and make a better decision, for example improving FCR and biosecurity to improve profitability. Care must be taken to interpret the findings as the costs of grow-out Asian seabass is different for each farm due to different management practices.
format Article
author Mohd Nor, Norhariani
Mohd Yazid, Siti Hajar
Mohd Daud, Hassan
Azmai, Mohammad Noor Amal
Mohamad, Nurliyana
spellingShingle Mohd Nor, Norhariani
Mohd Yazid, Siti Hajar
Mohd Daud, Hassan
Azmai, Mohammad Noor Amal
Mohamad, Nurliyana
Costs of management practices of Asian seabass (Lates calcarifer Bloch, 1790) cage culture in Malaysia using stochastic model that includes uncertainty in mortality
author_facet Mohd Nor, Norhariani
Mohd Yazid, Siti Hajar
Mohd Daud, Hassan
Azmai, Mohammad Noor Amal
Mohamad, Nurliyana
author_sort Mohd Nor, Norhariani
title Costs of management practices of Asian seabass (Lates calcarifer Bloch, 1790) cage culture in Malaysia using stochastic model that includes uncertainty in mortality
title_short Costs of management practices of Asian seabass (Lates calcarifer Bloch, 1790) cage culture in Malaysia using stochastic model that includes uncertainty in mortality
title_full Costs of management practices of Asian seabass (Lates calcarifer Bloch, 1790) cage culture in Malaysia using stochastic model that includes uncertainty in mortality
title_fullStr Costs of management practices of Asian seabass (Lates calcarifer Bloch, 1790) cage culture in Malaysia using stochastic model that includes uncertainty in mortality
title_full_unstemmed Costs of management practices of Asian seabass (Lates calcarifer Bloch, 1790) cage culture in Malaysia using stochastic model that includes uncertainty in mortality
title_sort costs of management practices of asian seabass (lates calcarifer bloch, 1790) cage culture in malaysia using stochastic model that includes uncertainty in mortality
publisher Elsevier
publishDate 2019
url http://psasir.upm.edu.my/id/eprint/81044/1/ABSTRACT.pdf
http://psasir.upm.edu.my/id/eprint/81044/
https://www.sciencedirect.com/science/article/pii/S0044848618319276
_version_ 1739829888809959424
score 13.211869

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