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Cow won't gain weight
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<blockquote data-quote="angus9259" data-source="post: 913623" data-attributes="member: 7398"><p>According to specialist at MSU - 20% of pregnancies to Johne's affected animals will become affected IN UTERO - before ever hitting the ground. Taking colostrum increases odds of contraction. Feces coated teats even more. The odds of a calf born in pasture becoming clinical when it's Dam was not is relatively minor since the rate of effect is driven by the quantity of Johnes bacteria consumed (ie - they can consume small amounts and not become clinical themselves). So if a calf takes a swig off a Johnes feces coated teat of a non-clinical dam it's unlikely to become clinical itself. If the animal is housed indoors or in muddy conditions, the rate of transmission obviously increases.</p><p></p><p>It's a bugger......</p></blockquote><p></p>
[QUOTE="angus9259, post: 913623, member: 7398"] According to specialist at MSU - 20% of pregnancies to Johne's affected animals will become affected IN UTERO - before ever hitting the ground. Taking colostrum increases odds of contraction. Feces coated teats even more. The odds of a calf born in pasture becoming clinical when it's Dam was not is relatively minor since the rate of effect is driven by the quantity of Johnes bacteria consumed (ie - they can consume small amounts and not become clinical themselves). So if a calf takes a swig off a Johnes feces coated teat of a non-clinical dam it's unlikely to become clinical itself. If the animal is housed indoors or in muddy conditions, the rate of transmission obviously increases. It's a bugger...... [/QUOTE]
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