I would like to make an observation Please. All of the eggs I have gotten this year have porous shells. Some from here, some from other avenues. Last year I had 80% shipped egg hatches and I always have 100% hatch of my own eggs. This Spring it has been awful Only one chick of the first 2 dozen eggs I have had shipped in made it to hatch then died in shell.Six of my own eggs in the same incubator hatched just fine. I have 2 dozen more shipped eggs in my bator right now, all but 2 of them have porous shells and only those 2 are developing. Please give your hens calcium supplements. Especially if you are shipping eggs. Thank You.
I have been giving my girls oyster shell since they started laying and I noticed I am having porous eggs and some thin shelled ones anyways. I try to catch the porous ones and I put them in the fridge. Some still manage to make it through because they aren't visible to the naked eye.