Abstract
Shrimp
aquaculture systems vary from primitive (extensive/improved extensive) to more
industrialized (intensive/semi‐intensive) farms, and the impacts of
environmental shocks may differ between them. This article applies the
Cobb–Douglas stochastic production frontier function to evaluate the
determinants that impact the inefficiency of these intensive and extensive
systems in Vietnam. Data is from a
survey of 436 white‐leg shrimp (Litopenaeus vannamei) farms in the Mekong Area.
Our findings show that farmers with self‐reported experiences of drought have
higher production efficiency, while experiences of irregular weather reduce
efficiency. In addition, education and feeding practice/stocking density
adjustment measures increase extensive efficiency. Furthermore, longer crop
duration impacts the two systems differently, increasing intensive farm
efficiency but decreasing extensive farm efficiency. Interestingly the
efficiency effects differ for the two technologies, with two exceptions;
efficiency increases for both locations further from the sea and decreases with
disease occurrence.
Fulltext: https://doi.org/10.1111/jwas.12874
(Source: https://www.proquest.com/scholarly-journals/determinants-inefficiency-shrimp-aquaculture/docview/2726156568/se-2)