[Action of the vaccination of sows against E. coli infections with a subsequent postpartum booster].
In an eastern european pig productions unit with high prevalence of suckling piglets diarrhoea during late lactation the following trial was conducted: The sows were assigned to an experimental and to a control group and were treated as follows: Group one (15 sows) were vaccinated with a single 2 ml dose of Porcovac Plus (Höchst Roussel Vet.) during their late pregnancy (gilts were vaccinated twice). Booster vaccination was performed between day 2-7 p.p. Group two (15 sows) were vaccinated during their late pregnancy the same was as the sows in the group one, but received no p.p. Booster. The following parameter were evaluated. A: Preweaning diarrhoea B: Preweaning mortality C: Three weeks weaning litter weights D: Postweaning mortality E: Average weight gain during the first 3 weeks postweaning The results revealed a marked difference between the groups (group 1: 16.1% vs. group 2: 23.3%) regarding preweaning diarrhoea (parameter A). A similar difference was to be seen regarding parameter B (preweaning mortality) between the groups (group 1: 7.5% vs. group 2: 10.7%). In spite of this there was a non significant difference as regards weaning litter weights (parameter C) between group 1: 59.2 +/- 2.4 kg and group 2: 57 +/- 2.2 kg. Postweaning parameters showed better results in the booster vaccinated group regarding both evaluated parameter as well. Regarding piglet mortality (parameter D) there was a marked difference between the group 1 (0.67%) and group 2 (2.1%) to be seen. Regarding average daily gain (parameter E) between group 1 (470 +/- 11 gr) and group 2 (380 +/- 9 gr) there was a significant difference (p < 0.05) to be discovered. It is the opinion of the authors that p.p. Booster vaccination of the sows is an economically important tool in large and small pig production units.
Bilkei
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Konsulentenbüro für Krisenmanagement in der Schweinezucht.
Biro
O
O
D000818:Animals; D000831:Animals, Newborn; D001428:Bacterial Vaccines; D003967:Diarrhea / Q000453:epidemiology / Q000382:microbiology / Q000517:prevention & control / Q000662:veterinary; D004927:Escherichia coli Infections / Q000276:immunology / Q000517:prevention & control / Q000662:veterinary*; D005061:Europe, Eastern / Q000453:epidemiology; D005260:Female; D007117:Immunization, Secondary; D018445:Infectious Disease Transmission, Vertical / Q000517:prevention & control / Q000662:veterinary*; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000276:immunology / Q000517:prevention & control / Q000662:veterinary*; D015995:Prevalence; D013552:Swine; D013553:Swine Diseases / Q000276:immunology* / Q000517:prevention & control
D001428:Bacterial Vaccines