SUMMARY: Three of 152 strains of transmitted their ability to utilize sucrose (Sac) to other strains by conjugation. The transfer factor of one of them and of a Sac strain was thermosensitive. The raffinose-utilizing ability of 27 of 163 strains was also transmissible. Transmissible raffinose-utilizing ability was a feature of porcine enteropathogenic strains possessing the K88 antigen. The determinants controlling raffinose utilization (Raf) and K88 antigen production were commonly transmitted together from these strains; so also was the determinant controlling enterotoxin production, but to a lesser extent. It was not possible to transfer lactose-utilizing ability from 320 strains of salicin-utilizing ability from 12 strains of or dulcitol-utilizing ability from 99 strains of and 88 strains of salmonellae.

Sucrose- and raffinose-utilizing ability were transmitted separately to several sp., including to and and to a variety of strains of

A strain of in which Sac had been established and a strain of in which Raf had been established survived less well in the alimentary tract of chickens than their Sac or Raf parent strains.


Article metrics loading...

Loading full text...

Full text loading...


Most cited this month Most Cited RSS feed

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error