Each dose of two ml contains the F4ab (K88ab) fimbrial adhesin, the F4ac (K88ac) fimbrial adhesin, the F5 (K99) fimbrial adhesin, the F6 (987P) fimbrial adhesin and of LT toxoid, which induce a mean antibody titre of respectively ≥ 9.0 log2 Ab titre, ≥ 5.4 log2 Ab titre, ≥ 6.8 log2 Ab titre, ≥ 7.1 log2 Ab titre, and 6.8 log2 Ab titre after vaccination of mice with a 1/ 20 sow dose.