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Production of
big sized Penaeus monodon in lined ponds

VDS Crustocean Feeds

Paanderstraat 40, 8540 Deerlijk, Belgium
Phone: +32 56 719168, Fax: +32 56 723002, e-mail: crustocean at vds-afs.be

www.crustocean.com


Seychelles islands Introduction
Coetivy Prawn project
Pilot phase : 4 ponds
Phase 1: 74 ponds (construction from 1990-1993)
Phase 2&3: 124 ponds (construction from 1999-2003)
All ponds are 0.5 ha and lined.
Pilot phase
Coetivy Phase 2: South farm
Coetivy South farm

Coetivy Phase 2: North farm
Coetivy North farm

Integrated project
Integrated farm Layout

North farm ponds
North farm ponds

2003 - first cycle
stocking of ponds Stocking from October 2002 till January 2003
60-200 PL/m² (direct stocking: PL25)
Total of 71 million PL’s stocked
Harvesting from April till September 2003
Partial harvest in some ponds
2003 cycle - Production results
shrimps Total production: 1084 tons
Productivity: 13,55 tons per ha
Average size: 32,8 g
Survival rate: 53,9 %
Average weekly growth (from stocking): 1,01 g/week
Average FCR: 3,07
Average length of the cycle: 212 days
Parameters affecting results
lined ponds Which parameters are affecting the growth rate and feed conversion ratio ?

Results used - 1. Weekly estimates
Weekly growth rates (averages of 4-5 weeks), obtained during weekly population and average size estimates.

sampling of population estimate sampling, estimation of average size
Results used - 2. Harvest results
Results from stocking till harvest:
Results - Growth model
Growth curve
Temperature
Temperature curve Coetivy
Results - Influence of stocking density
Comment:
There is very little influence of the stocking density on growth and FCR
Results - Influence of Biomass at Harvest




Comment: Little (negative influence on growth and FCR)
Results - Influence of Harvest size





Comment:
Harvest size positively influences growth,
probably related to the fact that a bigger portion of the cycle is above 5 g.






Harvest size negatively influences the FCR
Results - Influence of Harvest time


Comment:
The time of the harvest has a negative influence on the average growth and final FCR.
There can be a combined effect of harvest size and temperature
Results - Influence of Harvest time



Comment:
There is a positive effect of harvest size on average growth.
There is a negative effect of harvest time on average growth and final FCR.
There is almost no effect of harvest size on FCR
Results - Weekly growth rate

Results - Feed conversion rate

Cumulative FCR

Domestic broodstock, farmed on Coetivy Broodstock production
Females: 1,2-1,4 g/week till 100-120 g
Males: 0,7-0,8 g/week till 60-80g
Growth curve farmed raised broodstock
Cost analysis – 1. production parameters

Cost analysis – 2. Costs

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