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Livestock
Livestock & Forage
Destroying immunity...?
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<blockquote data-quote="Bill the Bass" data-source="post: 7616092" data-attributes="member: 1559"><p>The blood test is simple, they either have antibodies in the blood or they don’t albeit at differing levels as far as I understand. The problem is the PCR dung test that could say the animal is not shedding one day but she could well be the next. This along with the long incubation period for the disease, makes it a serious ‘iceberg’ disease and one that as far as I can see, you can only really manage the risk. From what I know so far though I think relying on building up a level of immunity would be a bit of a fools errand.</p><p></p><p>We are culling anything that has positive bloods which this year has been a right cu nt of a job with two real good, breedy cows going, thankfully they are just second and third calvers with no heifers to weed out. A shitty disease in all aspects.</p><p></p><p>When I watch cull cows sold at Carlisle the johnes/crones theory becomes scary and not something the industry should be blasé about.</p></blockquote><p></p>
[QUOTE="Bill the Bass, post: 7616092, member: 1559"] The blood test is simple, they either have antibodies in the blood or they don’t albeit at differing levels as far as I understand. The problem is the PCR dung test that could say the animal is not shedding one day but she could well be the next. This along with the long incubation period for the disease, makes it a serious ‘iceberg’ disease and one that as far as I can see, you can only really manage the risk. From what I know so far though I think relying on building up a level of immunity would be a bit of a fools errand. We are culling anything that has positive bloods which this year has been a right cu nt of a job with two real good, breedy cows going, thankfully they are just second and third calvers with no heifers to weed out. A shitty disease in all aspects. When I watch cull cows sold at Carlisle the johnes/crones theory becomes scary and not something the industry should be blasé about. [/QUOTE]
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Destroying immunity...?
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