I have 19 hens and 1 rooster who kind of wobbles around because he was attack when he was young. I really don't want to find blood in an egg ever. Is there any way I can make sure I never do?
No. Even the eggs from the factory farm get them, they use a special machine to see though the eggs and sort them out. Then they use them for food products that require egg.
Blood or meat spots in an egg does not indicate that the egg is fertile or developing. They happen randomly. There is no known cause, and it does not indicate a health problem with the hen. Fertile eggs have a white 'bullseye' one the yolk. Embryo development starts in that 'bullseye'. For an embryo to develop, eggs must be incubated (kept at a constant 100* for several days). Eggs left on the counter will not develop. This is a fertile egg with a very small blood spot. It was laid just a few minutes before this picture was taken. It was in no way beginning to develop.
Buy eggs from the store that have been candled and sorted. That's the only way. As explained above, the rooster has nothing to do with blood spots. I think most folks would be amazed how many eggs get pulled from the factory farms because of blood spots. I've had roosters with my layers for 20 years. Collect your eggs every day and you'll never have a developing embryo, if that's what you're worried about.
