E. coli K88, K99 and 987P and rotavirus specific chicken egg antibodie
s were administered to piglets with diarrhoea, on two farms. Oral admi
nistration of antigen specific egg yolk powder resulted in a reduction
in the duration of diarrhoea to 1.3 days. Piglets receiving a control
egg powder prepared from non immunised chickens experienced a clinica
l duration of 1.8 days, compared to 1.9 days for untreated piglets. Pi
glets receiving the antigen specific egg powder were all cured after o
ne day, those receiving the control egg powder after 2.6 days and thos
e receiving no treatment after 3.5 days. The trials demonstrated the t
herapeutic effect of the oral administration of antigen specific egg y
olk powder.