Has anyone else had problems with this? We have recently lost 4 calves and still are fighting with some. All of these calves have died from the result of not "sucking." These newborn calves are very healthy and vigarous (not a bit weak), but they won't suck. These calves are very bright eyed and run and jump like a little calf does. The calves don't look dumb. They look like any normal calf. We have been worried about them not receiving the clostrum from the cow. So we have been tubing the calves with the cow's milk and supplement clostrum, along with other supplement milk. We get some clostrum in them, but after about 3 or 4 days they give up and die. We have talked to several vets and they have no idea what is wrong with the calves. A neighbor has also had the same problem. He had one posted and the results came back as clostrum deficiency. All of these calves are out of a purebred angus herd. We do share bulls and etc. Do you think the cows are passing bacteria/infections on the to the calves? Does anybody have any ideas? We are opening to any suggestions.