SDSU Beef Day 2020 Summary Publication

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1) Determine adequacy of passive transfer, and specifically Mannheimia hemolytica antibodies, in 2 subsets of neonatal calves.
2) Characterize presence and relative levels of respiratory pathogens – and changes over time – in nasal swabs in 2 cohorts of calves.
3) Use the results to determine whether changes in vaccine programs are warranted in this herd.


South Dakota State University


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