[Influence of the timing of an early postnatal booster vaccination on some fertility parameters in sows].
In a large pig production unit, with high prevalence of E. coli caused postpartal urogenital diseases of the breeding animals and diarrhoea of the piglets, the pregnant sows received during their late pregnancy a Porcovac plus E. coli vaccination. The vaccinated sows were assigned to two experimental groups and were treated postpartal (p. p.) as follows: Group 1 (421 sows): received an E. Coli booster on the first p. p. day Group 2 (299 sows): received a booster on the 7th p. p. day The following parameters were evaluated: A: Weaning-estrus-intervals B: Farrowing Rate The results showed a significant (p < 0.05) shorter weaning-estrus-interval (Parameter A) in group 1 when compared to group 2 (7.21 +/- 1.04 vs. 9.84 +/- 1.11). Regarding parameter B (farrowing rate) the groups showed no significant difference (group 1: 89.9% vs. group 2: 91.8%). It is the opinion of the authors that in large pig production units with high incidence of urogenital diseases an early p. p. E. coli Booster should be performed, because of its positive effect on the weaning-estrus-intervals.
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Konsulentenbüro für Krisenmanagement in der Schweinezucht, CH- 8600 Dübendorf.
Bilkei
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D000818:Animals; D001428:Bacterial Vaccines; D004926:Escherichia coli / Q000276:immunology*; D004927:Escherichia coli Infections / Q000276:immunology / Q000662:veterinary*; D004971:Estrus; D005260:Female; D005298:Fertility; D007117:Immunization, Secondary / Q000662:veterinary*; D011247:Pregnancy; D013552:Swine; D013553:Swine Diseases / Q000276:immunology*; D013997:Time Factors
D001428:Bacterial Vaccines