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<blockquote data-quote="wbvs58" data-source="post: 838778" data-attributes="member: 16453"><p><a href="https://www.bvdvaustralia.com.au/documents/e/producersguide0708.pdf" target="_blank">https://www.bvdvaustralia.com.au/docume ... de0708.pdf</a></p><p></p><p>Try the above link, but you have to sit down with a clear mind and work through it to fully understand it and how it applies to your situation.</p><p>As I said previously you have to find out which test said the bull was +ve, the antigen (bad, usually ear notch) or antibody test (good), it is impossible for both to be +ve. I think it is more than likely it was a blood antibody test as it was done for a disease investigation.</p><p>If the disease is contracted as an adult, yes, the virus leaves their body completely on recovery. It is usually a symptonless disease, it will lower their immune system while active, making more susceptible to respiratory disease etc when stressed such as on entry to a feedlot, but cows in the paddock will usually make a full recovery and definately will not continue to shed the virus.</p><p>First thing is to go back to the vet and ask which test was it, does the test mean your bull is a PI?</p><p> If the vet is only young and has not had much experience he may not know the difference between the tests, he may just be excited that he has a result to tell you.</p><p>Ken</p><p>Don't stress even in a worst case scenario your loss may only be minimal, if your cows are all vaccinated/immune their is no reason why you can't still use a PI bull if he is doing the job of getting them in calf, but I think it is unlikely that he is PI.</p></blockquote><p></p>
[QUOTE="wbvs58, post: 838778, member: 16453"] [url=https://www.bvdvaustralia.com.au/documents/e/producersguide0708.pdf]https://www.bvdvaustralia.com.au/docume ... de0708.pdf[/url] Try the above link, but you have to sit down with a clear mind and work through it to fully understand it and how it applies to your situation. As I said previously you have to find out which test said the bull was +ve, the antigen (bad, usually ear notch) or antibody test (good), it is impossible for both to be +ve. I think it is more than likely it was a blood antibody test as it was done for a disease investigation. If the disease is contracted as an adult, yes, the virus leaves their body completely on recovery. It is usually a symptonless disease, it will lower their immune system while active, making more susceptible to respiratory disease etc when stressed such as on entry to a feedlot, but cows in the paddock will usually make a full recovery and definately will not continue to shed the virus. First thing is to go back to the vet and ask which test was it, does the test mean your bull is a PI? If the vet is only young and has not had much experience he may not know the difference between the tests, he may just be excited that he has a result to tell you. Ken Don't stress even in a worst case scenario your loss may only be minimal, if your cows are all vaccinated/immune their is no reason why you can't still use a PI bull if he is doing the job of getting them in calf, but I think it is unlikely that he is PI. [/QUOTE]
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