Certified GKH Gardening Expert
Blood meal, which is essentially dried blood, is used often in the garden as a fertilizer that add nitrogen to the soil (https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/blood-meal-fertilizer.htm), so using it is helpful in the garden).
There is one thing to consider though. With blood meal, you can have issues with animals being attracted by the scent and rooting around where the blood meal is spread. With undried blood, as you would have from the hens and goats, this issue will be even more likely as it will have a stronger scent.