Normally lamb in January and do a pre-lambing booster 4 weeks pre-lambing, however, have an odd one out (long story!) who has been missed out and has about a week to go. Vet advice was it's too late to be of benefit the ewe's colostrum now and to vaccinate the lambs at birth. Has anyone any experience of having to do this? I read somewhere about using an anti-serum as well as vaccinating. Bit scared to vaccinate baby lambs! Any advice welcome, thanks