The application of progressive systems in high density vannamei shrimp culture

Abstract

The increase of super-intensive pond waste and the rearing period of high-density shrimps, has been reported to be a problem of environmental quality deterioration, which is accompanied by the chance of disease outbreak. Therefore, a progressive system with two phases of cultural activities, namely nursery and grow-out, is known to be an alternative in the process of avoiding the critical period between Day of Culture (DOC) 30-50, as well as increasing the chances of a successful culture. This research aims to examine the application of a progressive system, in the super-intensive culture of vannamei shrimps. The two methods used were Progressive & Non-Progressive treatments (PG & NPG). The NPG was used by directly stocking PL-10 to a grow-out pond of 1,000 m2, with a density of 500 PL/m2. However, PG (nursed for 21 days) was used by stocking PL-10 to PL-31 in 100 m2 pond with a density of 5,000 PL/m2, which were then transferred to a grow-out pond of 1,000 m2. The results showed that the PG treatment had better water quality parameters compared to the NPG. The survival rate, production, and feed conversion ratio in the PG treatment produced better performance than the NPG, with differences in the value of feeds used and yield of shrimp sales at 25.64% and 64.33%, respectively.