Low IB mean titer and % CV below the expected level
Published: September 25, 2020
I would be grateful if somebody suggested me some reasons to review behind a phenomenon that I used to encounter whenever we vaccinated our parent breeder with Ma5 clone 30 combined. IB titer and % CV are below the expected level contrary to ND that is within the expected range.
Thanks and regards.
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Anonymous
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25 de septiembre de 2020
Hi,
Kindly mention following to understand the question properly.
1. Complete vaccination Schedule(age/dose/route) followed so far
2. Production
3. Age at titer estimation
4. Test report
5. ELISA kit make
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26 de septiembre de 2020
IB Vaccine easier destroy than ND if you prolong dw route
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26 de septiembre de 2020
Sirs
The problem occur after laying at any age 24,40 55 wk-old
Elisa IDEXX is used for testing
Route is by spraying
dose according to manufacturer
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8 de noviembre de 2021
Salah Mohammed for LIVE vaccine, around 4000-5000 Titers are showing in IDEXX Elisa. but it may change case to case. And this titer should come after 4-5 weeks of vaccination. regarding CV%, in a vaccinated flock it should show below 30%, standard rule. you need to see the distribution of the titer bars across the scale and if CV% is above 30, need to analyze where the titers got deviated from normal and how many samples.
if your IB titers are too low with low CV%, means the LIVE IB strain was unable to stimulate the titers and it happened in the whole flock uniformly. Just remember, you need to check the titers after 4-5 weeks of live vaccination only.
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26 de septiembre de 2020
Kindly discuss the case with me on my e-mail id
Dr. Jignesh Barot
jgbivrig@gmail.com
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