I lost a year-old Brangus heifer to what we think was blackleg. A neighbor also lost a heifer recently. My heifer had a 7-Way at 4 months and a second shot at 6 months. The shots were applied by two different vets. I wonder if both shots were improperly put into the muscle or if both doses were out of date when applied. I've also heard there is a new strain of blackleg that's immune to the 7-Way. Do you have any other ideas?
You don't mention this as ...