How to make scrap bread more nutritious for chickens

[Altairsky]

How do you come by cow colostrum?
I thought that was a valuable item with a short window of availability (since mammals only produce it for a few days).

I'm lucky to work in a dairy farm so there is abundance of colostrum during the calving season (winter). The cheese factory that buy our milk doesn't want it so all the colostrum that the calves don't drink goes to waste.