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Shell Defects
Sandpaper or rough shells
Description
The terms sandpaper shells and rough shells refer to eggs with rough-textured areas, often unevenly distributed over the shell.
Incidence
The incidence is normally less than 1% of total production, but may be higher for some strains of bird. It is also higher in early lay, often as a result of double ovulation, which produces one shell-less egg and another one with extra shell deposits.
Cause Control
Diseases, e.g. infectious bronchitis, infectious laryngotracheitis or avian encephalomyelitis: Follow effective vaccination programmes.
Defective shell gland Disturbances at the time a hen is due to lay can cause the egg to be held over for another day : Minimise activities which create disturbances in and around the shed. Increase shed security to stop other birds and animals entering the shed.
Incorrect or changes in lighting programme : There should not be sudden increases in day length as pullets come into lay, or lighting changes during lay.
Water shortages : Make sure that the water supply is adequate, that there are no blockages in water lines and that drinkers are functioning property.
Well, CRAP. We had a power outage yesterday for 4 1/2 hours.
We weren't home when the power went out. I had eggs in the process of hatching. I had just taken 9 chicks out of the incubator before the power went out. The temp in the incubator went down to 82 before we got power again.
I checked eggs this morning. There's about a dozen left in there, and no more had even pipped.
I guess I will just leave them in there a few more days to see what happens.
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I know exactly how you feel. I'm a wimp too. A couple weeks ago, our dog got in the chicken pen and killed a 7 week old chick and severely injured another. I had to cull the injured one. It was very hard to do and it made me rather queasy. Afterwards, I felt a lot better knowing he wasn't suffering anymore but it sure was hard to swing the hatchet.
Quote:
Shell Defects
Sandpaper or rough shells
Description
The terms sandpaper shells and rough shells refer to eggs with rough-textured areas, often unevenly distributed over the shell.
Incidence
The incidence is normally less than 1% of total production, but may be higher for some strains of bird. It is also higher in early lay, often as a result of double ovulation, which produces one shell-less egg and another one with extra shell deposits.
Cause Control
Diseases, e.g. infectious bronchitis, infectious laryngotracheitis or avian encephalomyelitis: Follow effective vaccination programmes.
Defective shell gland Disturbances at the time a hen is due to lay can cause the egg to be held over for another day : Minimise activities which create disturbances in and around the shed. Increase shed security to stop other birds and animals entering the shed.
Incorrect or changes in lighting programme : There should not be sudden increases in day length as pullets come into lay, or lighting changes during lay.
Water shortages : Make sure that the water supply is adequate, that there are no blockages in water lines and that drinkers are functioning property.
I just moved pullets to my house from my dad's. Maybe the stress of the move could have caused the rough egg. Today I had an egg that was almost flat on one side. Does moving laying hens typically cause laying issues or a reduction in laying.