| Full text | |
| Author(s): |
Iwashita, Marina Keiko P.
[1]
;
Nakandakare, Ivan B.
[2]
;
Terhune, Jeffery S.
[3]
;
Wood, Theresa
[3]
;
Ranzani-Paiva, Maria Jose T.
[2]
Total Authors: 5
|
| Affiliation: | [1] Embrapa Brazilian Agr Res Corp, Fisheries & Aquaculture, BR-77020020 Palmas, TO - Brazil
[2] Inst Fisheries, BR-05001900 Sao Paulo - Brazil
[3] Auburn Univ, Sch Fisheries Aquaculture & Aquat Sci, Auburn, AL 36830 - USA
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | FISH & SHELLFISH IMMUNOLOGY; v. 43, n. 1, p. 60-66, MAR 2015. |
| Web of Science Citations: | 37 |
| Abstract | |
A feeding trial was conducted to investigate the effects of dietary administration of probiotic with Bacillus subtilis, Aspergillus oryzae and Saccharomyces cerevisiae on growth, innate immune response, Hemato-immunological parameters and disease resistance of Nile tilapia, Oreochromis niloticus. Animals were distributed in three equal groups, each of five replicates and received one of the following experimental diets for four weeks: Control, non-supplemented diet; 5 g kg(-1) probiotic mixture (B. subtilis 1.5 x 10(9) CFU g(-1), S. cerevisiae 10(9) CFU g(-1) and A. oryzae 2 x 10(9) CPU g(-1)); and 10 g kg(-1) probiotic mixture (B. subtilis 3.0 x 10(9) CFU g(-1), S. cerevisiae 2.0 x 10(9) CPU g(-1) and A. oryzae 4.0 x 10(9) CFU g(-1)). The respiratory burst activity, white blood cells and hematological parameters were evaluated after four, five and six weeks of feeding. At the end of the growth trial, fish were sampled for intestinal microbiology and challenged by intraperitoneal injection of LD50 concentration of Aeromonas hydrophila and Streptococcus iniae. Mortality was recorded for the following 3 weeks. Results showed that administration of the probiotic had no significant effect on the growth rates of Nile tilapias, although the fish fed probiotics had better feed conversion. Respiratory burst activity, erythrocyte fragility and levels of white blood cells were significantly improved in tilapias fed diet supplemented with probiotic levels (P < 0.05), which may exhibit up-regulating effects on tilapia immune parameters. The cumulative mortality after A. hydrophila and S. iniae challenge decreased in tilapias fed with probiotic (P < 0.05). The present study demonstrated the potential of B. subtilis, S. cerevisiae and A. oryzae combined as beneficial dietary probiotic in juvenile O. niloticus. (C) 2014 Elsevier Ltd. All rights reserved. (AU) | |
| FAPESP's process: | 09/11418-0 - Probiotic supplementation on hematology and recruitment of policariontes macrophages in the Nile tilapia challenge with Aeromonas hydrophila and Streptococcus iniae |
| Grantee: | Maria José Tavares Ranzani de Paiva |
| Support Opportunities: | Regular Research Grants |