Day 2: 13 Nov 2019 - 12:05 – 12:25 PM
This paper will look at the recent trends in shrimp aquaculture in Asia. The sector has been negatively impacted since 2009 with the proliferation of Acute hepatopancreatic necrosis disease (AHPND) and other diseases which have reduced the average survival rates to 50-60%. The industry has learnt to live with this by ensuring that bacterial load is maintained and sludge is continuously removed from the pond bottom.
Lower ex-farm prices for P. vannamei have deterred some farms from stocking while others have converted to P.monodon. However, the culture period for P. monodon is 140 days, which is double that of P. vannamei. Comparing the average daily growth rate and harvest sizes at current ex-farm prices, what kind of margin differentials can we expect? The longer-term plans to disease mitigation in P. vannamei have been via genetics but is an SPR strain with disease-free status possible to achieve? RAS nurseries have been able to provide much stronger juveniles to mitigate diseases in ponds. This is gaining popularity but what is the modus operandi? One measure of Asia’s success is via post larvae efficiency and this paper will look at the various countries which have done more with less.