Livestock Management
Calf mortality rises when calf
scours is caused by a co-infection of multiple pathogens. While vaccines are available for some causes of calf scours, others like Cryptosporidium cannot be vaccinated against. Parks recommends vaccinating against agents for which that option is avail- able, to avoid co-infections and bet- ter prepare a calf to deal with any infection scenario. “If we can give the calf a good
start and it has a chance to get the antibodies against the neonatal calf diarrhea agents that we’ve vacci- nated against, then when we have some of those co-infections, the calf mortality rate is much lower,” says Parks. Rapid weather changes and
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calving conditions can also affect the levels of infection. Wet, mud- dy conditions and high pasture stocking rates while calving can greatly attribute to the number of scours incidents. While some calving conditions like the number of cattle per pen or pasture can be addressed to reduce outbreak, adverse weather conditions are be- yond a cattleman’s control. Parks recommends keeping calving areas clean, limiting cross-contamination between calving groups and vac- cinating as a form of insurance for unforeseen calving stressors and scours outbreaks. “Anytime we can do something
to prevent an infection, just to have that calf where it is ready to fi ght anything that might come its way, we are in much better shape,” says Parks. To successfully combat a disease
as complex and costly as calf scours, it must be managed from multiple angles. By building strong immune systems in pregnant cows, produc- ers create stronger calf crops ready to withstand pathogen pressures. ❚
62 The Cattleman January 2017
thecattlemanmagazine.com
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