I think that he/she is referring to the enzyme past you can feed to newborns to help fend off scours.What's it supposed to do? Do you feed it, rub it on or insert it?
Ken
Neither Optimizer nor First Defense are vaccines. Optimizer is a nutritional supplement, and First Defense is a source of antibodies.No vaccine works well without a good immune system. I listened in at a seminar given by a vaccine company and they spent 45 minutes talking about immune system being enhanced by feeding mineral.
Definitely pricey!!!! But $$$ well spent. I don't vaccinate the cows with Scour Bos (or whatever your preference) but can't remember the last time I had to treat a calf for scours that wasn't "fresh spring grass butt" and even then, rarely. Not 100% within the first 12 hours of birth but still beneficial.First Defense Tri-Shield is worth its weight in gold.