E.coli: Probiotic for Piglet Diarrhoea (Paperback) (ISBN-13: 9783639026276)

Aim of this study was to select environmental E. coli isolates that pro-duced colicins against the swine pathogen E. coli K88+. In initial evaluation using a modified plate method with 18 colicinogenic E. coli constructs, colicins E3, E4, E5, E9, Ia, K and N were found to possess inhibitory activity against 12 ETEC K88+ strains. A total of 463 environmental isolates from cattle rumen, cattle feces, pig feces and hog manure-amended soil were screened for colicin production by a modified plate test. Further, colicinogenic isolates were screened for five toxin genes LT, STa, STb, VT1 and VT2 as well as K88 (F4) fimbriae using PCR reactions. Fourteen non-pathogenic isolates were subjected to characterization of colicin genes by PCR using 9 new primer sequences, antibiotic susceptibilities and substrate utilization. Two potential probiotic strains of E. coli, UM-2 and UM-7 which produced colicins that could utilize potato starch and inulin were selected for in-vitro competition with E. coli K88+ strain 2-12. In vitro competition between the synbiotics and E. coli K88+ revealed inhibition of E. coli K88+. Animal testing of these strains is currently being undertaken.

Author: Amit Setia,Denis O. Krause
ISBN-10: 3639026276
ISBN-13: 9783639026276
Publisher: VDM Verlag Dr. Mueller E.K.
Language: English
Published: 05/27/2008
Pages: 116
Format: Paperback
Weight: 0.36lbs
Size: 9.00h x 6.00w x 0.24d