How often do you want to hatch pure breed chickens? If you only want to do it once or twice a year, rather than all year round, you could keep them together when you're not breeding them. I don't have chickens yet, but my plan is to separate them into breeding flocks a few weeks before they're...
I'm sure you could use the blood to fertilize any plant that benefits from blood meal application, but I don't know how much you'd want to use, I'm sure the dosage is different for liquid vs. dried. If you're not going to use it right away, I like the idea of letting the blood soak into sawdust...
I'm new to chickens, living in West Wisconsin. I've yet to acquire any birds, and my coop is still in the planning stage, but I hope to get some chickens this year or the next, and eventually branch out into keeping some ducks and geese as well. I have no experience with raising any animals...