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Livestock & Forage
Mycoplasma vaccibe
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<blockquote data-quote="Cow-crazy" data-source="post: 9183147" data-attributes="member: 171887"><p>Has your vet spoken about why myco might be affecting the calves? Are the calves coming from a few sources or a single farm? If those farms are keeping any calves on themselves, are they having problems with myco or pneumonia? </p><p>My understanding is that an infected cow is brought in, which goes onto infect the entire herd. Calves can then get it through close contact with the cows or from unpasteurised or waste milk. Some herds can be infected but the bacteria stays as subclinical and never affects them, whereas others can have frequent/severe outbreaks of one or a few of the illnesses it causes. </p><p>Good nutrition, ventilation, milk feeder hygiene, viral pneumonia vaccines like bovalto, disease status (BVD free etc) and stress can all minimise the risk of myco pneumonia, but you could have just been unlucky to buy calves from a farm that unfortunately has a myco infection that doesn't just stay subclinical - like other people on this thread. Could you have bought an infected calf in the past and the myco spreads at your's through batches? Or could you be repeatedly buying in infected calves? If it's the latter, might be best to talk to the seller. If they're having problems too, them vaccinating their dry cows would help your job and save you the cost of another vaccine, and one that might knock the calves</p></blockquote><p></p>
[QUOTE="Cow-crazy, post: 9183147, member: 171887"] Has your vet spoken about why myco might be affecting the calves? Are the calves coming from a few sources or a single farm? If those farms are keeping any calves on themselves, are they having problems with myco or pneumonia? My understanding is that an infected cow is brought in, which goes onto infect the entire herd. Calves can then get it through close contact with the cows or from unpasteurised or waste milk. Some herds can be infected but the bacteria stays as subclinical and never affects them, whereas others can have frequent/severe outbreaks of one or a few of the illnesses it causes. Good nutrition, ventilation, milk feeder hygiene, viral pneumonia vaccines like bovalto, disease status (BVD free etc) and stress can all minimise the risk of myco pneumonia, but you could have just been unlucky to buy calves from a farm that unfortunately has a myco infection that doesn't just stay subclinical - like other people on this thread. Could you have bought an infected calf in the past and the myco spreads at your's through batches? Or could you be repeatedly buying in infected calves? If it's the latter, might be best to talk to the seller. If they're having problems too, them vaccinating their dry cows would help your job and save you the cost of another vaccine, and one that might knock the calves [/QUOTE]
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