Oral supplements should be avoided for the first 24 hours, as they can interfere with the very essential absorption of colostrum. In selenium deficient areas an injection of BoSe is a good idea for all kids.
In ruminants(and horses) the newborn's gut is permeable to the relatively large antibodies in the colostrum. As soon as there is any material in the digestive tract, these openings start closing. There is a very small window of time for the kid to absorb the immune molecules it needs to protect it until it can develop it's own immunity. The presence of any material other than colostrum will also cause these openings to close, so give only colostrum for at least the first 24 hours.
In ruminants(and horses) the newborn's gut is permeable to the relatively large antibodies in the colostrum. As soon as there is any material in the digestive tract, these openings start closing. There is a very small window of time for the kid to absorb the immune molecules it needs to protect it until it can develop it's own immunity. The presence of any material other than colostrum will also cause these openings to close, so give only colostrum for at least the first 24 hours.