Environmental amelioration in biofloc based rearing system of white leg shrimp (Litopenaeus vannamei) in West Bengal, India

Special Issue - Ecological intensification: A new paragon for sustainable aquaculture

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Table 7

Microbial populations in water and soil in L. vannamei culture (mean ± standard error; n = 3).

Parameters (CFU × 104 ml⁻¹)	Water				Soil

	B	NB	F	C	B	NB	F	C
AHB	6.00 ± 0.76^d	5.70 ± 0.76^c	4.18 ± 1.60^b	3.48 ± 1.33^a	10.53 ± 1.16^d	9.29 ± 0.91^c	8.50 ± 0.79^b	7.81 ± 0.69^a
NFB	3.61 ± 0.60^c	4.83 ± 0.79^d	3.05 ± 0.39^b	2.63 ± 0.27^a	8.94 ± 0.88^c	9.77 ± 0.97^d	7.29 ± 0.63^b	5.66 ± 0.22^a
AB	5.53 ± 0.81^c	5.36 ± 0.72^c	3.37 ± 0.53^b	2.11 ± 0.16^a	11.00 ± 1.08^d	10.33 ± 0.97^c	8.32 ± 0.81^b	6.52 ± 0.42^a
AOB	4.93 ± 0.81^c	3.48 ± 0.64^b	1.84 ± 0.12^a	1.60 ± 0.07^a	12.04 ± 0.83^d	11.43 ± 0.77^c	8.27 ± 0.19^b	7.79 ± 0.11^a
DNB	5.63 ± 0.83^d	4.32 ± 0.70^c	3.43 ± 0.52^b	2.61 ± 0.28^a	9.20±0.91^c	8.62 ± 0.83^b	5.50 ± 0.39^a	5.02 ± 0.27^a
CDB	5.35 ± 0.79^d	4.78 ± 0.68^c	3.75 ± 0.48^b	2.90 ± 0.22^a	9.86 ± 0.81^d	8.94 ± 0.65^c	7.58 ± 0.49^b	6.13 ± 0.27^a
PSB	2.97 ± 0.46^c	2.33 ± 0.33^b	2.14 ± 0.32^b	1.83 ± 0.26^a	7.42 ± 0.52^d	6.50 ± 0.41^c	5.26 ± 0.24^b	4.92 ± 0.15^a
LB	0.64 ± 0.14^b	0.58 ± 0.14^a	1.77 ± 0.08^d	1.30 ± 0.04^c	2.32 ± 0.17^b	1.90 ± 0.18^a	3.24 ± 0.07^c	3.06 ± 0.07^c
Bacillus sp.	1.28 ± 0.19^d	0.78 ± 0.10^c	0.53 ± 0.04^b	0.35 ± 0.04^a	4.00 ± 0.30^c	2.84 ± 0.18^b	2.44 ± 0.12^b	1.98 ± 0.07^a
Lactobacillus sp.	3.00 ± 0.22^d	1.93 ± 0.17^c	1.77 ± 0.07^b	1.50 ± 0.11^a	4.96 ± 0.29^c	3.57 ± 0.21^b	3.19 ± 0.03^b	2.75 ± 0.11^a

^{a, b, c, d} Means superscripted with different letters in each row are significantly different (P < 0.05).

The statistical analysis was done separately for water and soil.

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