Table 1.
Colony morphology of Yersinia spp. and other bacteria on CIN and modified CIN.
Table 2.
Recovery rate of Y. enterocolitica from the 52 naturally contaminated rectal swabs from swine.
Figure 1.
Bacteria on CIN (A) and modified CIN (B).
1, Y. enterocolitica 1A/O:6,30 (IP102); 2, Y. enterocolitica 1B/O:8 (IP11105); 3, Y. enterocolitica 2/O:9 (IP383); 4, Y. enterocolitica 3/O:1,2,3 (IP135); 5, Y. enterocolitica 4/O:3 (IP134); 6, Y. enterocolitica 5/O:2,3 (IP178); 7, Y. enterocolitica 1B/O:8 (ATCC 9610); 8, Y. enterocolitica 3/O:3 (PC-M1-K1); 9, Y. enterocolitica 1A/O:5 (PC-M16-2); 10, Y. aldovae (IP6005); 11, Y. bercovieri (IP3443); 12, Y. frederiksenii (IP3842); 13, Y. intermedia (IP955); 14, Y. kristensenii (IP105); 15, Y. mollaretii (IP33766); 16, Y. pseudotuberculosis (IP34476); 17, Y. enterocolitica 1B/O:8 (YE036c-CY); 18, C. freundii, H2S-producing; 19, 20, C. freundii, nonxH2S-producing; 21, C. braakii; 22, C. koseri; 23, A. hydrophila; 24, 25, 26, E. cloacae; 27, 28, 29, P. rettgeri; 30, M. morganii; 31, Pantoae spp.; 32, S. odorifera; 33, S. marcescens.
Table 3.
Growth of Y. enterocolitica on CIN and modified CIN under different incubation conditions compared with that on LBA (control medium).
Table 4.
Recovery of Y. enterocolitica from artificially prepared bacterial mixtures and artificially contaminated raw pork.
Figure 2.
Colony morphology on CIN and modified CIN of artificially prepared bacterial mixtures.
1, Y. enterocolitica 3/O:1,2,3 (IP135); 2, C. braakii; 3, H2S-producing C. freundii; 4, A. hydrophila; 5, P. rettgeri; 6, E. cloacae. Zone A shows a region of bacterial clumping in which the formation of a black centre due to H2S production and of a brown diffusible pigment produced by a phenylalanine deaminase reaction could not be detected or could hardly be observed.