#GYLTE MOD#

Der blev foretaget registrering af produktionsresultaterne i besætningerne.įør behandlingen var der ingen forskel på Se status i de to behandlingsgrupper inden for bessetningerne men der blev konstateret en variation mellem besaetningerne. Blodprøver blev udtaget umiddelbart før behandlingen og igen 3–6 uger efter faringen til vurdering af selenstatus. Behandlingen blev foretaget 3–6 uger før faringen som en enkelt intramuskulær injektion med enten Na-selenit (0,05 mg Se pr. Selenbehandling af drœgtige søer og gylte blev udført som et dobbelt blindforsøg i 5 besætninger med ialt 350 søer og gylte af Dansk Landrace, Yorkshire og Landrace-Yorkshire krydsninger fodret med en byg-sojaskrä foderblanding tilsat 0,1 mg Se pr. The number of days from weaning to oestrus and the number of oestrous cycles per pregnancy were not influenced by the Na-selenite treatment. Overall, no effect of the Na-selenite injection was seen, in that there was no difference in number of liveborn, stillborn, and weaned piglets between the treatment groups. After farrowing there were only minor differences in Se status between the treatment groups, whereas the variation among herds persisted. Within herds there was no pretreatment difference in Se status between the two treatment groups, while a considerable variation was seen among herds. The productivity of the sows and gilts was recorded. Blood samples were taken immediately before treatment and once again at 3–6 weeks after farrowing, to evaluate the Se status. At 3–6 weeks before farrowing the animals were injected once intramuscularly with either Na-selenite (0.05 mg Se per kg) or placebo. Der var ingen synlige tegn på reproduktionsforstyrrelser i vaccinationsperioden og reproduktionsresultaterne blandt vaccinerede og ikke-vaccinerede gylte fandtes ikke signifikant forskellige.Selenium treatment of pregnant sows and gilts was conducted as a double-blind placebo-controlled study in 5 commercial herds with a total of 350 sows and gilts (Danish Landrace, Yorkshire and Landrace-Yorkshire crossbreeds). I 2 besætninger blev PPV seronegative eller lavtitrede gylte vaccineret før løbning. Derimod var 50 af 65 fostre fra de 6 ikke-vaccinerede gylte inficeret med PPV, og 43 var døde. Alle 53 fostre fra de 7 vaccinerede gylte var i live og ikke inficeret med PPV. drægtighedsdag, og fostrene blev undersøgt. De ikke-vaccinerede gylte forblev lavtitrede eller negative for PPV antistof til efter podning. vaccination efterfulgt af en udtalt stigning efter 2. De vaccinerede gylte gav et lavt antistofsvar efter 1. drægtigheds dag blev de podet intravenøst med PPV.

#GYLTE MOD#

There were no obvious signs of reproductive disorders in the 2 herds during the vaccination trials, and the reproductive performance of vaccinated gilts did not differ significantly from that of non-vaccinated gilts.Īf 13 gylte blev 7 vaccineret 2 gange med 3 ugers mellemrum med en inaktiveret vaccine mod infektion med porcint parvovirus (PPV), medens 6 kontroldyr ikke blev vaccineret. In a field study comprising 2 herds, PPV seronegative or lowtitered gilts were vaccinated before mating. Conversely, 50 of 65 fetuses from the non-vaccinated gilts were infected with PPV, and 43 were dead. All of 53 fetuses from the vaccinated gilts were alive, and infection with PPV could not be demonstrated. The gilts were killed after about 90 days of gestation, and their litters were examined. The nonvaccinated gilts remained low-titered or PPV antibody negative until after challenge.

The vaccinated gilts produced an antibody respons after the 1st and 2nd vaccination compatible with a primary and a secondary immune response, respectively.

Starting after the 1st vaccination the gilts were bred and, after about 40 days of gestation, challenged intravenously with virulent PPV. Of 13 gilts 7 were vaccinated twice at an interval of 3 weeks with an inactivated vaccine against porcine parvovirus (PPV) infection, while the 6 nonvaccinated gilts served as controls.

Gylte