Effect of Stocking Density on Culture Efficiency and Physiological Indicators of Largemouth Bass (Micropterus salmoides) under Recirculating Water Conditions in Land-Based Round Ponds

Table 1

Growth and production indexes of M. salmoides under different stocking densities.

Parameters	D1	D2	D3	D4	D5
Final weight (g)	130.13 ± 7.78^a	120.39 ± 1.57^ab	111.50 ± 9.10^b	110.44 ± 1.21^b	126.38 ± 8.24^a
Final body length (cm)	17.47 ± 0.22^a	17.12 ± 0.09^ab	16.71 ± 0.50^b	16.57 ± 0.01^b	17.54 ± 0.22^a
Weight gain rate (WGR, %)	156.01 ± 15.30^a	136.85 ± 3.08^ab	119.36 ± 17.90^b	117.28 ± 2.38^b	148.62 ± 16.22^ab
Special growth rate (SGR, %/d)	1.49 ± 0.09^a	1.37 ± 0.02^ab	1.24 ± 0.13^b	1.23 ± 0.02^b	1.44 ± 0.10^ab
Body length daily growth rate (BLG, %/d)	0.29 ± 0.02^a	0.26 ± 0.01^ab	0.22 ± 0.05^b	0.20 ± 0.01^b	0.30 ± 0.02^a
Hepatosomatic index (HIS, %)	1.25 ± 0.12	1.41 ± 0.24	1.43 ± 0.01	1.42 ± 0.19	1.46 ± 0.24
Viscerosomatic index (VSI, %)	11.73 ± 4.97	13.50 ± 0.52	11.28 ± 0.63	12.43 ± 0.59	12.89 ± 2.24
Condition factor (CF, g/cm^3)	2.44 ± 0.05	2.40 ± 0.01	2.39 ± 0.02	2.43 ± 0.03	2.34 ± 0.06
Total production (kg)	373.13 ± 41.22^c	415.17 ± 14.43^bc	430.70 ± 47.88^bc	481.15 ± 5.20^b	645.68 ± 54.97^a
Group weight gain (kg)	211.49 ± 41.22^b	226.59 ± 14.43^b	215.18 ± 47.88^b	238.69 ± 5.20^b	346.28 ± 54.97^a
Feeding amount (kg)	259.03 ± 13.47^e	299.50 ± 3.18^d	333.55 ± 0.99^c	356.05 ± 6.58^b	401.53 ± 7.88^a
Feed conversion rate (FCR)	1.24 ± 0.18	1.33 ± 0.10	1.59 ± 0.36	1.49 ± 0.01	1.17 ± 0.16
Survival rate (SRI, %)	90.03 ± 4.58	92.94 ± 2.02	90.99 ± 2.70	91.33 ± 0.01	91.85 ± 2.22
Coefficient of variation (CV)	0.20 ± 0.02^ab	0.18 ± 0.00^ab	0.20 ± 0.04^a	0.15 ± 0.00^b	0.19 ± 0.00^ab

Note. There was no lowercase letter in the shoulder label of peer data or no significant difference in the expression of the same lowercase letter ). Different lowercase letters indicated significant differences ). The following table was the same.