I remember my Dad having a crisis over what he was going to do with all the blood and bone fertilizer he swore by, and had just bought. It was bought to pour out on the ground but ......
Then there were the Dubs that had to shop around to find food for their chickens that didn't have blood in it. Not much of that here in NZ at the time.
Never mind that a speedy hen will catch a mouse and woof it down without hanging it to bleed out while it praises Jehovah for it's meal. Our average Dubby would still eat it's eggs without a twinge of conscience because the chicken did it, not them.