Table 3.

The microbial content of muscle of O. niloticus fed on S. cerevisiae and B. subtilis treated diets in low input ponds.

Parameter	Diet
	Diet 0	Diet 1	Diet 2	Diet 3	Diet 4	Diet 5	Diet 6
Total plate count (log CFU g−1) (10−2)	2.27 ± 0.16ac	1.83 ± 0.22bc	1.44 ± 0.09 b	1.61 ± 0.31bc	2.08 ± 0.01bc	1.49 ± 0.07b	2.00 ± 0.03bc
E. Coli (log CFU g−1) (10−2)	1.99 ± 0.05a	1.75 ± 0.04bc	1.48 ± 0.04c	1.70 ± 0.02cd	1.82 ± 0.04ac	1.59 ± 0.05c	1.80 ± 0.03ac
Feacal coliform (log CFU g−1) (10−2)	1.14 ± 0.03	n.d	n.d	n.d	n.d	n.d	n.d
Salmonella spp. (log CFU g−1) (10−2)	1.01 ± 0.01	n.d	n.d	n.d	n.d	n.d	n.d
Total yeast cells counts (log CFU g−1) (10−4)	2.10 ± 0.04a	1.73 ± 0.02ab	1.23 ± 0.22 b	1.97 ± 0.08ab	1.59 ± 0.06ab	1.18 ± 0.18b	1.81 ± 0.10ab

^an.d – Not detected.

^bData represented as means ± SEM (n = 3). Mean values in the same row having different superscript letters (a, b c and d) are significantly different at P ≤ 0.05.