Effect of Stocking Density on Growth Performance of Black Tiger Shrimp (Penaeus Monodon) in Organic Aquaculture System
Year: 2025
Type: article
Abstract: Organic shrimp aquaculture prioritizes natural feeds, sustainable practices, and avoids antibiotics and chemicals, promoting a healthier production. This study investigated the optimal stocking density for black tiger shrimp (Penaeus monodon) in organic aquaculture. Shrimp were reared at densities of 5, 7, and 9 shrimp per square meter (PL/m²) in ponds for 120 days. Water quality parameters during this period were: temperature (28.84-37.94°C), pH (6.47-8.81), dissolved oxygen (5.25-10.67 mg/L), ammonia (0.001-0.10 mg/L), and total dissolved solids (3.35-11.43 mg/L). Pond bottom soil quality included organic carbon (0.93-1.87%), organic matter (0.04-0.27%), total nitrogen (0.70-2.13 µg/g), total phosphorus (0.24-0.70 µg/g), and potassium (0.42-1.3 mEq/100 g), with nitrogen increasing at higher stocking densities. Chlorophyll a concentration ranged from 4.93 to 17.01 µg/L, and bacterial load increased with stocking density in T1 (0.21 ± 0.07×10³ CFU/mL). PCA showed higher densities led to increased ammonia from faeces and uneaten feed, raising nitrogen and Vibrio in sediments. Pearson’s correlation indicated a relationship between nitrogen, phosphorus, and chlorophyll a production. The highest weight gain was in the lowest density treatment (T1: 27.54 ± 0.52 g), with the lowest in the highest density (T3: 19.08 ± 0.59 g). Survival rates ranged from 38.88% to 59.77%, with T1 having the highest survival. Specific growth rate (SGR) decreased with density, and the best feed conversion ratio was in T1 (1.50 ± 0.08). The benefit-cost ratio was highest in T1 (1.85 ± 0.03), recommending an optimal stocking density of 05 PL/m² for profitability and healthier yield.
Source: Aquaculture & Fisheries
Author: Md. Harunor Rashid
Language: English
Subfield: Aquatic Science
Domain: Life Sciences
SDGs: Zero hunger, Life below water
Open Access status: diamond
OpenAlex ID: W4410940771