Result
General characteristic : gestation period,parity,litter size,birth weight.mummy,stillbirth,born alive,and abnormalities of the traits studied is shown in table 1. There is no significant difference in trait between the 2 studied groups.
Figure 1 depicts morbidity and mortality rates of diarrhea in pigs within the first 10 days post farrowing. During the first 8 day, the rates were noticeable lower in the treated group than in the control group especially the first 3 day. Morbidity rates due to diarrhea were 21-25% and 9-13% in the control group respectively and they were different significantly
Mortality table 2 was not found in pigs born to vaccinated dam while those in the control it was found 3.9% during day 3 to day 9. Those differences was significant. In addition, death of pigs during the first 10 days caused by other factors were almost similar in the control and passively vaccinated groups
The death of pigs due to diarrhea was found in the controls 3.9% higher than those in the passively immunized animal. 4 and 1 sows in the control and vaccinated group respectively developed mastitis during day 2 to 8 postfarrowing and the piglets born from these sows developed diarrhea 50-100%
In order to rule out the effect of mastitis on incidence of neonatal diarrhea of pigs in both group, pigs born to dams with the problem were excluded,the rest were analysed and the result was shown in figure
Mortality rate due to neonatal diarrhea in pigs born to dams vaccinated with E.coli bacterin were still significantly lower on day 1 as well as on day 2 and 3 than those in the control group.