![]() Vaccine temperature and type of needle are additional factors. If you don’t give the vaccine fast enough, it’s not going to work properly.” “If you give a vaccine too early, it won’t work properly. For example, some modified live vaccines can cause abortions in pregnant cows if not used exactly according to label directions,” she said. “This is particularly important when vaccinating pregnant cows to ensure the vaccines are both safe and effective. Waldner recommends following vaccine labels to ensure they are administered with the right technique and right dose at the right time. ![]() “The nutritionist almost should be right at the top of the list because without good nutrition, we impact the calf’s immune system and we impact the quality and the quantity of the colostrum that the calf is going to get and how fast and how ready it’s going to be to get up and suck.” We’ve got good evidence that all of these are important factors from field studies in Western Canada,” Waldner said. “We know that good biosecurity, reducing exposure to infectious disease and good nutrition do improve calf health and reduce time spent treating sick calves and calf losses. “Even the best vaccines will be overwhelmed if disease pressure is too high.” However, they must be part of a package that includes good bio-security, calving ground management and nutrition. Vaccines are a critical part of the disease management toolbox, said Waldner. “The bottom line is the type of vaccine that you’re going to use in your baby calf and when you’re going to vaccinate your baby calf is going to vary depending on when you have vaccinated your cow for respiratory disease.” “Vaccinating the pregnant cow for respiratory disease should be part of a conversation about vaccination plans for the calf that include when to best vaccinate and boost the calves in your herd and what type of product to use - injectable or intranasal,” she said. Pre-calving vaccines can provide calf protection against scours, clostridial diseases and respiratory diseases. Otherwise, colostrum from another healthy cow in the same herd is the next best solution, followed by using frozen colostrum and then a commercial colostrum replacer.
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