Comparing profits from shrimp aquaculture with and without green-water technology in the Philippines
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To reduce disease impact, Philippine farmers developed the green-water (GW) system, which has been spreading rapidly since 2008. In the most applied GW-system, the shrimp pond receives water from a reservoir stocked with tilapia. We collected financial data on GW and non-GW systems from farms having similar management and environmental context. All farms had more than one pond; the average pond area was < 1 ha, and total pond areas per farm ranged from 1.4 to 139 ha. The total variable and fixed costs per ha of shrimp pond were not different for GW and non-GW farms, but on GW farms the cost per kg of shrimp produced was lower. The latter was higher than the 2009 market price of 30 g shrimp for non-GW farms mainly. In GW farms the cost of seed was lower, and survival rates and individual shrimp weights at harvest were higher for an equally long culture period.
Bosma, R. H., & Tendencia, E. (2014). Comparing profits from shrimp aquaculture with and without green-water technology in the Philippines.
Journal of Applied Aquaculture, 26(3), 263-270. https://doi.org/10.1080/10454438.2014.936746
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