The protective effect of a combined rotavirus/enterotoxigenic E. coli K99 vac­ cine against naturally occurring neonatal diarrhoea was evaluated in two dairy and two beef herds. Before vaccination, frequency of diarrhoea in these herds was 46% up to 60% with losses of 7% to 20%. After vaccination of pregnant cows and heifers mild diarrhoea occurred in 14% to 20% of their calves, one out of 144 ...

K99 fimbriae of enterotoxigenic Escherichia coli consist of eight different subunits. A major subunit called fimbrillin forms fimbrial structure and a minor subunit called adhesin localizes at the tip of fimbriae and recognizes host receptor ganglioside. Within this eight gene cluster, fanE and fanF have not yet been sequenced. In this study, fanE and fanF genes were sequenced by analyzing seve...

In Secion 1 we describe what is known of the extent to which a separable extension of unital associative rings is a Frobenius extension. A problem of this kind is suggested by asking if three algebraic axioms for finite Jones index subfactors are dependent. In Section 2 the problem in the title is formulated in terms of separable bimodules. In Section 3 we specialize the problem to ring extensi...

A 120-sow,continuously farrowing swine unit from Minnesota experienced an epidemic of diarrhea in 1to 3-day-old pigs. Clinical illness, which usually began shortly after birth, was characterized by high morbidity (nearly 100%)and negligible mortality « 1%).Diarrheic pigs remained vigorous, continued to nurse, and recovered spontaneously in 4-5 days. Diarrhea was clinically unresponsive to treat...