Sow live vaccine injection time (will injection during pregnancy affect piglet antibodies? )

Animal husbandry

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(1) how to get a good vaccine!

1. Live seedlings that can cause reproductive disorders in pigs:

To fight (classical swine fever, for example) when a sow is empty.

Why:

Because the live vaccine that can cause reproductive disorders in pigs can enter the embryo through the blood-fetal barrier of sows, causing piglets to be injected with similar vaccines after birth, piglets can not produce antibodies very well.

When and what vaccine will be given depends on the incidence of the pig farm.

?

I don't understand this statement. For a farm of five hundred sows, you should at least have HC, PR, PPV and JE seedlings. Are they all arranged from postpartum to before milk mating?

I also want to know about the problem of herders, so make a separate post.

Please discuss it.

In our farm, we only fight fake rabies, blue ears and classical swine fever after giving birth. Japanese Japanese encephalitis sows do not have to fight. They are usually vaccinated a month before mosquitoes appear. Parvovirus has a great influence on new sows. It is said that parvovirus vaccine can not be injected into sows. Does the teacher know why parvovirus vaccines can not be injected into sows after parturition? What is the principle? Hope to teach me, I thank you first! We usually play as small as the second child.

I have read some reports that the antibodies produced by small sows will protect them for the rest of their lives.

There is a lot of data showing that the immune mechanism of parvovirus disease is different from that of other viral diseases, and effective antibody levels can be maintained for several years after vaccination or natural infection. And the susceptibility of newborn pigs is stronger than that of post-parvovirus.-- with regard to parvovirus, if a sow has parvovirus in the first birth, it will develop immunity in the second fetus.

In addition, classical swine fever vaccine is strongly recommended. Classical swine fever attenuated vaccine. The protective force is stable. Indeed. The attenuated vaccine of swine fever in China is the best in the world.-- do you think you should be injected during empty pregnancy or during pregnancy? -- We fight classical swine fever and foot-and-mouth disease on the day of weaning-- HC, PR, PPV and JE are not in every batch.