Effects of Chlorella pyrenoidosa Supplementation on Water Quality, Shrimp Growth Performance, and Biofilm Bacterial Community Structure in Litopenaeus vannamei Aquaculture Systems

Table 2

Growth parameters of L. vannamei in the different aquaculture systems.

Parameters	PBC	PBO	WEC	WEO
Mean final weight (g)	14.93 ± 0.12^a	12.53 ± 0.05^b	14.03 ± 0.05^a	12.10 ± 0.08^b
Survival (%)	80.21 ± 1.95^a	83.33 ± 0.74^a	68.75 ± 1.28^b	58.85 ± 0.74^c
Final biomass (kg/m^3)	9.58 ± 0.16^a	8.36 ± 0.11^b	7.72 ± 0.15^c	5.70 ± 0.04^d
FCR	1.29 ± 0.02^d	1.48 ± 0.02^c	1.60 ± 0.03^b	2.16 ± 0.02^a
ADG (g/day)	0.189 ± 0.002^a	0.159 ± 0.001^b	0.178 ± 0.001^ab	0.153 ± 0.001^d

Note: Mean values in the same row with different superscripts differ significantly (). Abbreviations: PBC, system with precultured biofilm and C. pyrenoidosa; PBO, system only with precultured biofilm; WEC, system with water exchange and C. pyrenoidosa; WEO, system only with water exchange. Values are the means of three replicates ± standard deviations.