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EVA Test

Equine-Reproduction.com Bulletin Board » General Stallion Questions » EVA Test « Previous Next »


Author Message
 

hedgerow farm
Breeding Stock
Username: Lotsofponies

Post Number: 124
Registered: 03-2009
Posted on Sunday, October 10, 2010 - 06:08 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

I have been reading the articles about EVA/EAV that are on this site, the presention (saw it online) that Kathy gave at a RPSI approvals sure simplified it.
I plan on having my boys tested and vaccinated this winter.

Questions:

1. If the blood test is positive the next step would be to test their semen?

2. What is the difference between a carrier and a shedder?

3. How long after the vaccination do you wait to test the semen, I'm guessing 28+ days?

4. Can you collect their semen at home, if so does a vet have to be present, guessing yes?

5. Is the semen tested just once or do you collect over a period of time?

6. If the blood test comes back negative and I vaccinated annually he will be EVA Negative, I don't have to worry about it as long as I vaccinate him every year?

7. If the semen test comes back negative then he is EVA Negative even though the blood tested positive?
 

Jos
Board Administrator
Username: Admin

Post Number: 3022
Registered: 10-1999
Posted on Monday, October 11, 2010 - 04:49 am:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

1. If the blood test is positive the next step would be to test their semen?

Yes. If the blood test showed antibody presence to the EAV, one would have to confirm "shedder" status by looking for viral presence in the semen.

2. What is the difference between a carrier and a shedder?

They are the same thing.

3. How long after the vaccination do you wait to test the semen, I'm guessing 28+ days?

One would not have to test the semen after vaccination, but before. The vaccination will not have an impact on a stallion that is already a shedder.

4. Can you collect their semen at home, if so does a vet have to be present, guessing yes?

You would in all likelihood require a veterinarian's signature on the test requisition form, so yes, the vet would need to be present.

5. Is the semen tested just once or do you collect over a period of time?

For a standard test, one would only need to test once. For some countries when exporting semen, 2 tests are required.

6. If the blood test comes back negative and I vaccinated annually he will be EVA Negative, I don't have to worry about it as long as I vaccinate him every year?

He would be defined as "EAV negative, vaccinated annually" (note the difference between "EAV" - the virus, and "EVA" - the disease).

7. If the semen test comes back negative then he is EVA Negative even though the blood tested positive?

He would be defined as "antibody positive, semen negative". In that instance, depending upon his titre levels, vaccination may not be necessary at that point (but might be in the future to retain adequately high levels for protection).



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Further, although we have the greatest respect for the posters offering assistance here, you are advised to seek a consultation with your veterinarian prior to using information obtained from this board if it is of a veterinary nature.

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