Posted 6/24/2013 15:47 (#3171969 - in reply to #3171732) Subject: Re: First defense bolus
A few producers around here routinely use it for all calves born in high-risk late winter or early spring season. Pricey ( at least $10 each ) but they feel it's worth it. Dad had enough problems with spring scours years and years ago that he abandoned it entirely and switched to fall calving.
First defense bolus
