Has anyone used this on baby calves. I was told this would be more cost effective than nuflor when they were very sick. I didn't know if it is intramusclar or subcutameous. We have been using baytril 100 and banamene.( our vet likes that together) It works very good on most, but some just don't respond to that. We raise baby calves every year and have had very good luck so far. You really have to keep them out of a draft and keep their pens very clean. We like bolusing them a few days after we get them and starting them out of 5cc long acting pen. I have read alot from Kansas State university's web site and they have very helpful info.