Open AccessThe Effects of Dietary Yeast Culture or Short‐chain Fructo‐oligosaccharides on the Intestinal Autochthonous Bacterial Communities in Juvenile Hybrid Tilapia, Oreochromis niloticus ♀× Oreochromis aureus ♂
Author(s) -
Zhou ZhiGang,
He Suxu,
Liu Yuchun,
Shi Pengjun,
Huang Guangxiang,
Yao Bin
Publication year - 2009
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/j.1749-7345.2009.00272.x
Subject(s) - oreochromis , tilapia , biology , temperature gradient gel electrophoresis , juvenile , food science , aquaculture , microbiology and biotechnology , yeast , bacteria , fishery , fish <actinopterygii> , ecology , 16s ribosomal rna , biochemistry , genetics
The effects of dietary yeast culture (YC) or short‐chain fructo‐oligosaccharides (FOS) on intestinal autochthonous bacterial communities in juvenile hybrid tilapia, Oreochromis niloticus ♀× Oreochromis aureus ♂ were studied by 16S rDNA denaturing gradient gel electrophoresis (DGGE). Ninety Tilapias in tanks (10 fish per tank) were randomly and equally divided into three groups. At the end of an 8‐wk feeding period of CK (the control treatment), YC (3 g/kg), or FOS (1 g/kg), autochthonous gut bacteria were analyzed in intestinal samples of all fish in each tank of a recirculating aquaculture system. The clear differences in the banding patterns indicated the obvious effects of dietary prebiotics on intestinal communities in hybrid tilapia. Higher variation was detected within the dietary YC group. This difference might be due to the effects of certain immune‐stimulating agents in YC on the immunity response of hybrid tilapia. It was concluded that dietary prebiotics, YC, and FOS obviously affected the intestinal bacterial community in hybrid tilapia with different patterns for different kinds.