Natasha, Janice and Lako, Jimaima V. and South, Graham R. (2014) Bacterial and Enterobacterial load of pond water and aquacultured tilapia, Oreochromis nilotics (L.), sourced from two major farms in Fiji. Fiji Agriculture Journal, 54 (1). pp. 40-47. ISSN 0015-0886
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Abstract
Total bacterial load and total Enterobacteriaceae in pond water, gills, skin and gastro-intestinal tract of
aquacultured tilapia, Oreochromis niloticus (Linnaeus, 1758), raised at Navua Prawn Farm (NPF) and
Naduruloulou Research Station (NRS) was estimated. The aerobic mesophilic counts of bacteria in pond
water were estimated to be 6.7 x 103 cfu/mL and 2.98 x 105 cfu/mL at NPF and NRS respectively. The
Total Enterobacteriaceae Counts in pond water were estimated as 6.40 x 102 cfu/mL and 1.33 x 104 cfu/
mL at NPF and NRS respectively. The aerobic mesophilic counts and Total Enterobacteriaceae counts
were much higher in gills, gastro-intestinal tract and on skin of tilapia cultured at NRS than at NPF. The
purged fish sample from NRS showed much lower Total Enterobacteriaceae and aerobic mesophilic
counts. The tilapia pond at NRS may have been contaminated by the daily influx of duck excreta from
a cage housed just above the pond for fertilization purpose. The infrequent water change of tilapia pond
further led to increased bacterial levels. The daily water change of ponds at NPF contributed to hygienic
culture conditions. Proper purging of tilapia is recommended to extend storage life of tilapia and tilapia
products and to prevent spread of food-borne diseases.
| Item Type: | Journal Article |
|---|---|
| Subjects: | S Agriculture > SH Aquaculture. Fisheries. Angling |
| Divisions: | Faculty of Science, Technology and Environment (FSTE) > School of Biological and Chemical Sciences |
| Depositing User: | Jimaima Lako |
| Date Deposited: | 23 Jan 2015 02:48 |
| Last Modified: | 14 Sep 2016 00:00 |
| URI: | https://repository.usp.ac.fj/id/eprint/7878 |
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