CASE STUDY: Effects of timing of a modified-live respiratory viral vaccination on performance, feed intake, antibody titer response, and febrile response of beef heifers11Appreciation is expressed to the Bair Ranch Foundation, Martinsdale, Montana, for purchasing 2 GrowSafe nodes and updating GrowSafe software. Support for E. A. Marceau was a provided by the National Science Foundation (NSF REU 1156855)22Mention of a trade name, proprietary product, or specified equipment does not constitute a guarantee or warranty by the USDA and does not imply approval to the exclusion of other products that may be suitable. The USDA is an equal opportunity provider and employer