Organs Sites TBC at 37°C (cfu x104 /g) SFB (cfu /g) Enterobacteriaceae (cfu x 103 /g) E. coli(cfu /g) Salmonella sp. (cfu /g) Shigella sp. (cfux102 /g)
Muscles SI
SII
17 d
80 cd
83 c
338 bc
3 b
4  b
35 f
419 de
0 e
17 de
1 e
5 e
Skin SI
SII
124 cd
2570 a
256 c
758 bc
127 b
128 b
0 f
2356 b
12 de
43 c
46 cd
131 a
Gills SI
SII
1 d
240 c
487 bc
2159 ab
2  b
19 b
0 f
3218 a
36 cd
215 a
19 de
91 b
Liver SI
SII
2 d
92 cd
58 c
399 bc
1 b
7  b
0 f
759 c
0 e
29 cd
11 e
22 de
Gut SI
SII
32 d
2258 b
139 c
263 c
162  b
2309 a
0 f
471d
115 b
122 b
61 bc
77 bc
Gonads SI
SII
1 d
5 d
190 c
3401 a
3  b
4  b
193 ef
794 c
0 e
96 b
9 e
18 de
Site I: before El-sail drain disposal point. Site II: after El-sail drain disposal point. TBC: Total bacteria counts. SFB: Spore-forming bacteria. Means followed by the same letter within the same columns are not significantly different (p ≥ 0.05).
Table 3: Microbial load in various organs of Oreochromis niloticus collected from both studied sites.
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