87.5 x 262 mm.
Broodstock & Hatchery
11
Vannamei PL efficiency index
This was introduced by McIntosh at TARS 2016. Since then, it has been applied as a measure of efficiency of the industry country-wide and can be indicative of disease outbreaks. The calculated PL efficiency index for 2020 is given in Figure 1. As a comparison, at the Eurotier China webinar in June 2020, Dr Putth Songsangjinda, Department of Fisheries, Thailand gave an index of 8.99 for 2019.
Black tiger shrimp
Domesticated and SPF Penaeus monodon broodstock are available in selected countries. There are three global broodstock suppliers; CPF (Thailand), Moana Technologies (Hawaii, USA) and Unima (Madagascar). In Malaysia and Thailand, the use of CPF broodstock has been instrumental in pushing for the revival of monodon shrimp farming. The Coastal Aquaculture Authority of India approved the imports of monodon broodstock in March 2019 from Moana Technologies and Unima. Moana has a multiplication centre in Ninh Thuan province in Vietnam and is setting up a centre in India. In Bangladesh, a third black tiger hatchery using CPF SPF broodstock started production in 2020. The other two hatcheries are using either Moana or CPF broodstocks or both. “We estimate SPF post larvae production at 401 million for the three hatcheries for 2020 and post larvae production from wild broodstock at 7.6 billion – a significant drop from the last few years when it has been 12-13 billion. There were 49 wild broodstock hatcheries operating in 2020. Several other hatcheries are looking seriously at switching to SPF broodstocks and the government has a target of five SPF hatcheries in operation in 2021,” said David Currie, Aquaculture Production & Trade Specialist, Safety Project, Bangladesh, Winrock International. SPF monodon post larvae cost USD9,900/million in Malaysia. It was reported that costs have risen as hatcheries try to increase profitability in Bangladesh. In Vietnam, prices ranged from VND80/PL (USD3,480/ million) to VND120/PL (USD5,220/million) for SPF post larvae. Thailand’s post larvae production in 2019 was 1.7 billion and with 13,806 tonnes produced, the PL efficiency index was 8.27 (DOF, Thailand).
Delivery of vannamei broodstock in China. Picture courtesy of Jianguo Shi, Hendrix Genetics, China.
January/February 2021 AQUA Culture Asia Pacific
