| Abstrakt: |
A season play an important role on the growth performance of any biological specimens like Litopenaeus vannamei collected from commercial pond Kavya Aqua Farm at Datardi village, Rajula (Gujarat). The experiment was taken up for 120 days with different stocking density of 30, 40, 50, 60, 70 and 80pc/m² with three replicate. The growth performance of Pacific White shrimp, Litopenaeus vannamei was recorded to observe the following attributes: stocking density, growth, survival rate, production and water quality parameters. The size of the culture pond was 0.50 ha. From the total ponds, 18 were taken up for experimental study. The SPF shrimp seeds were procured from MPEDA registered hatchery during the seasons. The initial average body weight of shrimp post larvae during summer crop at stocking was 0.06±0.04g. Mean growth during monsoon crop was significantly differ among the stocking densities with individual shrimp weights gain (g) of 34.46±0.24 followed by 31.2±0.31, 28.46±0.12, 25.89±0.35, 20.86±0.11 and 18.20±0.42 g and yields were 5091.6±57.6 followed by 6143.6±67.15, 7457.6±100.9, 7905.06±283.2, 7799.2±277.3 and 7292.6±165.1 kg/pond at 30, 40, 50, 60, 70 and 80 shrimp/m² respectively. Water parameter during the season was conducive and average water temperatures was 26.17±0.15°C. Better growth performance of shrimp was recorded in this season only because due to low water salinity, high dissolved oxygen content and suitable bloom and water quality. Larger shrimp size were associated with lower stocking density but higher yield was recorded at stocking density @60 shrimp/m² of raw shrimps biomass at harvest (kg) and good mean weight gain (g), low FCR, high ADG and SGR was recorded @30 shrimp/m². So it shows that aqua farmers during monsoon season should concentrate on what type of raw shrimp, they would like to produce from their culture pond like higher bulk production (kg) (stocked with 60pc/m²) with higher operational cost and uncertainty during culture activity or big count (g) (stocked with 30pc/m²) will give good return with low production cost and comfortable culture activity. [ABSTRACT FROM AUTHOR] |
