ing the timing rigorously. He says, “Too often, we fi t our vaccination schedule for a set of calves to our schedule. When the kids are home from school or when we’ve got the help to do it, we set that up, and that may not be the best schedule for a calf. And we tend to think one dose of a product fi ts all, and it doesn’t. We really have to look at giving a second dose.” And, he says, it’s important to
understand the duration of protec- tion, citing pinkeye vaccines as an example. “Most pinkeye vaccines are de-
signed to last a season, and the type of antibodies they build will last typically 4 or at the outside 6 months,” Spire says. “If we work calves too far ahead of our typical pinkeye season, we’ll end up see- ing that these vaccines don’t hold.” Pinkeye vaccine, he says, is the
About 90 percent of beef calves get adequate levels of colostrum.
What’s going on with the other 10 percent?
one that’s most often misused in this manner. “People may want to give it in March or February. We don’t see the fl y numbers and the dust and the pollen counts then. It gets to August or September and people say, ‘I vaccinated that calf in March,’ and all of a sudden in Au- gust they’ve got a pinkeye outbreak. And they say, ‘The vaccines should have worked.’” In this situation, timing of administration matters. When selecting a vaccine or set-
ting up a program for beef calves from birth to weaning, it takes some thought — thought about the type of vaccine to use, the need to use a specifi c type of vaccine, when to use it that best suits the calf, how long protection will last after use and whether the vaccine requires boostering to be most effective. A good vaccination program addresses those questions and others. One size doesn’t fi t all when it comes to herd-level protection.
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84 The Cattleman August 2013
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