If I have a cow that loses a calf, I milk her out twice and freeze back the colostrum. Or, if I have one with one or more big ugly teats that the calf can't nurse, I'll milk them out and freeze back whatever I think her calf doesn't need right then.
Second choice, for me, is the powdered colostrum product.
Johne's Disease and Bovine Leukosis Virus infection are so widespread in the dairy herds that fresh or frozen dairy colostrum are a last-ditch alternative, and I'd not be inclined to keep a heifer if she'd gotten dairy colostrum.
I've raised hundreds of dairy calves on the bottle, but I'm with novatech - almost never had a beef calf that turned out to be anything other than an undersized potbellied piece of crap - rarely worth the expense of milk replacer/calf grower or the extra time they took to feed out. Have had two in the last year that were born to cows with bad udders(3 blind teats, etc.) that I successfully grafted onto cows that had lost calves - one had salmonellosis, the other, the coyotes got - so the foster dams got a reprieve, and the bad-bag cows went to town.