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NIGHTMARE
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<blockquote data-quote="regolith" data-source="post: 1131882" data-attributes="member: 9267"><p>From what I've read every animal infected was infected before the age of six months, the cut off for being susceptible appears to be around then.</p><p>That guy who 'quarantined' his infected bought-in cow was wasting his time unless he kept all youngstock off that piece of pasture for goodness knows how many years, I don't recall how long it can last in the soil.</p><p></p><p>I'm keeping my fingers crossed that I might have dodged this bullet - realistically there's no way I can control exposure in the way my herd has been managed but if about seven years is it... the oldest animals born to my herd are eight years old this year and to date I've never seen the symptoms in a cow originating within the herd. We have had clinical positives that were culled, most recently in 2010.</p><p>Episodes of stress can trigger the symptoms, so it's often seen soon after calving.</p></blockquote><p></p>
[QUOTE="regolith, post: 1131882, member: 9267"] From what I've read every animal infected was infected before the age of six months, the cut off for being susceptible appears to be around then. That guy who 'quarantined' his infected bought-in cow was wasting his time unless he kept all youngstock off that piece of pasture for goodness knows how many years, I don't recall how long it can last in the soil. I'm keeping my fingers crossed that I might have dodged this bullet - realistically there's no way I can control exposure in the way my herd has been managed but if about seven years is it... the oldest animals born to my herd are eight years old this year and to date I've never seen the symptoms in a cow originating within the herd. We have had clinical positives that were culled, most recently in 2010. Episodes of stress can trigger the symptoms, so it's often seen soon after calving. [/QUOTE]
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