If an annual booster is given to ewes 2-4 weeks prior to lambing, then passive immunity is passed onto the lamb through colostrum. This will cover lambs for 3-4months (from the time of injection.) Clostridial deaths are commonly related to a sudden change in diet during feed transition.
There is also increasing incidence as we use higher power feeds and crops, with deaths often affecting your best animals.
Often farmers accept lamb losses that they don’t attribute to clostridial disease because they have a good 5-in-1 programme in place. Many farmers across NZ are reporting higher survival rates once they switch to Coglavax 8-in-1, we think upgrading to an 8in1 vaccine by investing less than 9 cents per dose could deliver more profit to your farm.