Ảnh hưởng của mật độ và độ sâu mương đến hiệu quả nuôi tôm trong mô hình tôm sú – khóm tại Gò Quao – Kiên Giang

Abstract

This study aimed to evaluate the effect of stocking density and the pineapple ditch depth on growth, the survival rate of black tiger shrimp, and shrimp culture efficiency in shrimp-pineapple culture model in Go Quao, Kien Giang. The results showed that the growth, survival rate of the black tiger shrimp, and profitability of the crop were significantly different among treatments (P < 0.05). After 81 days of the culture period, at a stocking density of 2 shrimp/m², the mean final weight (34.18 ± 0.28 g) and survival rate (55.08 ± 0.92%), and profit percentage (159.38%) were greater than those in the higher densities treatments (3, 4, and 5 shrimp/m²). The depth of the pineapple ditch also affected the growth, survival rate, and efficiency of black tiger shrimp culture in the shrimp–pineapple culture model. In the studied depth levels, a ditch depth of 1 m supported greater shrimp growth, survival, and economic efficiency than ditch depths of 0.6; 0.8, and 1.2 m.

Keywords: density, depth, shrimp-pineapple culture model, Go Quao, Kien Giang