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International Journal of Aquaculture, 2014, Vol.4, No.18 108
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112
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microorganisms in the digestive tract indicates a
significant role played by them during digestion of food.
The activity for four enzymes (protease, lipase,
amylase and cellulase) showed by an isolate (
Bacillus
sp. B
1
) is not surprising because diverse strains of
exo-enzyme producing
Bacillus
spp. have been
identified from the gastrointestinal tract of freshwater
teleosts (Ray et al., 2012). The bacterial flora of the
gastrointestinal tract with diversified enzymatic
potential plays a vital role in major part of the
metabolism of the host animal (Clements, 1997). The
digestive enzymes present in fish digestive tract can
elucidate some aspects of their nutritive physiology
and thus be supportive to develop nutritional strategies
for fish feeding and diet formulation (Alexander et al.,
2002; Ghosh et al., 2002; Nibeta and Ghosh, 2008 and
Ray et al., 2010). Therefore, the indigenous multiple
enzyme-producing bacteria can be effectively
exploited for use as probiotics while formulating
cost-effective aquafeeds.
Authors’ contributions
CNA contributed during conception and design, sample
collection, analysis and interpretation of results and write-up of
the manuscript. HAN and PWC contributed during sample
analysis and acquisition of data. All the authors read and
approved the final manuscript.
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