Do you know this serum is a blood product, and you can not trace it as to if it came from tested does or not? It an ID-1 which was a colostrum product both pose the exact same problems, you do not know if the products come from tested herds.
OP, sorry your post isn't clear to what the problems are. I have a article, from birth to kidding on goatkeeping 101 at dairygoatinfo.com I update it frequently. Kids who don't recieve quality colostrum in the first 12 hours of life simply are doomed, they are born sterile, the only immunity they have until you start vaccinating or the live through low levels of disease is colostrum. Very young does colostrum has very little immunity in it.
If you are having problems with pnemonia vaccinate for it. Nearly all pnemonia in goats is pasturella unless its from CAE or other chornic health conditions. Most catalogs including jeffers carries the new pasturella vaccines for goats, they work really well, make sure and give the vaccination exactly as the directions and give it over the last rib, do not give it near the front leg as it can make them lame for awhile. Do not use nasal or cattle vaccines because they carry pnemonia strains goats simply don't get.
You also might want to (if you don't milk for sale or house milk) is to put your does on feed through tetracycline, either pellets you buy for calves from your feed dealer, or you can mix aueromycin crumbles (once again we have this info on goatkeeping 101) and use this late winter early spring. It works really well if you get way too much rain and your shelter is not high and dry. I know feed through antibiotics have a bad taste in some folks mouths, but it is just for 2 or 3 months and you do what you have to do for a successful kidding season on your farm. Does fighting weather like you and I can have, simply need some help. This way you can get healthy robust kids so they can wean out and be strong for our horrid summers

Good luck with this. Vicki