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Egyptian Journal of Aquatic Biology and Fisheries
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Mehisan, M., El-moghazy, G., El-Sayed2, A., Iraqi, M., Soltan, M. (2015). Role of probiotics in improving growth performance, immunity and controlling Aeromonas hydrophila in the Nile tilapia Oreochromis niloticus. Egyptian Journal of Aquatic Biology and Fisheries, 19(3), 55-70. doi: 10.21608/ejabf.2015.2271
Mohamed Mehisan; Gihan El-moghazy; Abd El-Karim El-Sayed2; Mahmoud Iraqi; Magdy Soltan. "Role of probiotics in improving growth performance, immunity and controlling Aeromonas hydrophila in the Nile tilapia Oreochromis niloticus". Egyptian Journal of Aquatic Biology and Fisheries, 19, 3, 2015, 55-70. doi: 10.21608/ejabf.2015.2271
Mehisan, M., El-moghazy, G., El-Sayed2, A., Iraqi, M., Soltan, M. (2015). 'Role of probiotics in improving growth performance, immunity and controlling Aeromonas hydrophila in the Nile tilapia Oreochromis niloticus', Egyptian Journal of Aquatic Biology and Fisheries, 19(3), pp. 55-70. doi: 10.21608/ejabf.2015.2271
Mehisan, M., El-moghazy, G., El-Sayed2, A., Iraqi, M., Soltan, M. Role of probiotics in improving growth performance, immunity and controlling Aeromonas hydrophila in the Nile tilapia Oreochromis niloticus. Egyptian Journal of Aquatic Biology and Fisheries, 2015; 19(3): 55-70. doi: 10.21608/ejabf.2015.2271

Role of probiotics in improving growth performance, immunity and controlling Aeromonas hydrophila in the Nile tilapia Oreochromis niloticus

Article 6, Volume 19, Issue 3, September 2015, Page 55-70  XML PDF (3.99 MB)
Document Type: Original Article
DOI: 10.21608/ejabf.2015.2271
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Authors
Mohamed Mehisan1; Gihan El-moghazy1; Abd El-Karim El-Sayed22; Mahmoud Iraqi2; Magdy Soltan3
1Regional Center for Food & Feed (RCFF), Agriculture Research Center, Egypt
2Faculty of Agriculture-Benha University, Egypt
3Faculty of Agriculture-Benha University, Egypt.
Abstract
The tilapias were treated with of Enterococcus faecium and Bacillus coagulans at a final concentration of (107cfu/g) (107cfu/g). 18 aquaria with 6 replicates for treated and controls were used. After 75 days, the tilapias supplemented with the probiotic showed significantly better final weight, body length, specific growth rate, weight gain, feed intake, feed conversion ratio and protein efficiency ratio than those fed on the basal diet (Control). After 75 days from experiment start, each experimental fish group was divided into two groups; the first group was infected with Aeromonas hydrophila while the second group without infection. The best Hb, Htc, MCV and RBCs content was recorded by fish group fed on the E. faecium supplemented diet comparing to fish group fed on the basil diet and infected with A. hydrophila and the same trend was observed for mortality rate. The highest WBCs value and differential count were recorded fish groups infected with A. hydrophila. Results also showed that, fish fed on the diet supplemented with E. faecium followed
by Bacillus coagulans recorded the lowest (P< 0.001) AST value (16.3 u/L) and (17.23 u/L), while control positive Aeromonas hydrophila group showed the highest (P>0.001) values being 29.6 u/L.
Keywords
Probiotics growth; performance; Aeromonas hydrophila; Oreochromis niloticus
Main Subjects
Fisheries
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