IBR Vaccination

[Fergieman]

Dead or alive?

Whats the difference and when would you use one or the other?

@bovine

 

[bovine]

I just can't ignore the little red notifications....

Do you currently use IBR vaccine and what is your status (free or infected)?

Live vaccine may give a better immunity. They can be used intra-nasally during the course of an outbreak. There is a risk of the vaccine and the field strain combining and theoretically causing disease. Some vaccines claim they are modified to prevent the vaccine strain becoming latent.

Killed vaccines may require 2 injections to start a course, but not all do. No risk of the vaccine strain becoming latent. Slower onset of immunity.

We then have marker vaccines that we can use specific tests to find if the antibody response in the animal is due to the disease or the vaccine.

Maybe the easiest way to think about it:

• If you've not got IBR and want to protect against it then live vaccine (possibly intra-nasally)
• If you are in the middle of an IBR outbreak then live intra0nasally
• If you have IBR and intend to use vaccine going forwards then live vaccine every 6 months (or live followed by killed @6 then 12 months)
• If you think you will try vaccine for a year and 'see' if it helps - then I would go in with a killed - ideally 2 dose primary course and a 6 monthly booster

Most protect for 6 months. Pfizer Rispoval IBR if you start with live, boost with killed can then be used once per year, but there MUST be a live vaccine first.

Answer your question?

 

[Fergieman]

We have been vaccinating with Bovillis Live for several years. It was just the vet nurse asked if I wanted Live or dead vaccine when I ordered it.

 

[Blod]

If you sell breeding stock think carefully about the marker vaccine. I'm pretty sure it is the only one suitable for IBR accredited free herds.

 

[bovine]

All the Bovilis IBR vaccines are now marker vaccines (as I recall). If you are using it ongoing then you want live.

 

[Blod]

All the Bovilis IBR vaccines are now marker vaccines (as I recall). If you are using it ongoing then you want live.

If they are that's a recent development.

 

[Blaithin]

Slightly off topic thread hijack here...

@bovine have you seen any research trials suggesting a possibility that intranasal vaccines are less effective/consistent given their route of administration difficulties.

 

[Blod]

Slightly off topic thread hijack here...

@bovine have you seen any research trials suggesting a possibility that intranasal vaccines are less effective/consistent given their route of administration difficulties.

I've always thought that. The other thing is can non vaccinated animals pick up the virus off Intranasally vaccinated animals ?

 

[bovine]

@bovine have you seen any research trials suggesting a possibility that intranasal vaccines are less effective/consistent given their route of administration difficulties.

Not that I have seen. Intra-nasal vaccine has a place in a clean herd (perhaps if protecting showing animals) or in the case of an outbreak. Otherwise I would push for intramuscular or subcut vaccines. The antibody response should be stronger and longer lived.

 

[AF Salers]

As a pedigree breeder and testing clear of IBR i have been advised to use dead vaccine to avoid the risk of the theoretical link up as outlined by @bovine above

 

[Blod]

We were naive for IBR and advised to use marker vaccine for the show team.

 

[sheepwise]

The intranasal route can be used on much younger animals,2 weeks old calves I think. Is there any other reason for using intranasally @bovine because injection is much easier.

 

[sheepwise]

I have had a bad experience with IBR in the past basically coming in with store cattle.All finishing cattle are now done at housing with Tracherine intranasal,breeding cows injected at fluke dosing in January with IBR marker live and backend born calves with the same marker live at 2 weeks of age at or before housing.Is this a suitable policy or needing to be modified @bovine.Our vets have recommended marker vaccines for all breeding stock as Scotland could well bring in an eradication scheme in future.

 

[Blaithin]

The only difference I've seen with intranasal options here is they're fine for use in pregnant animals without the warnings of previous vaccination being recommended. Otherwise they carry the same advice for calves vaccinated prior to 6 months of age should be revaccinated after 6 months. I've never really heard of a good reason for why intranasal vaccines, like Inforce 3, suddenly became so popular. I agree that injection is much easier, consistent and, in my opinion, probably more effective. I've vaccinated thousands of cattle for IBR and BVD with SQ shots and don't recall ever receiving the drug myself but by the time I'd been around 20 calves done intranasally I'm sure I have more of the drug in my system than any one of them