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Do "rough" eggshells indicate a deficiency?

post #1 of 17
Thread Starter 

I have 7 hens of various breeds, all laying nicely.  Most of the eggs are very smooth similar to store-bought eggs, but a few have very rough shells that feel like sandpaper.  Does this indicate a dietary deficiency or is it normal?  They are on layer feed, plus finely crushed eggshells and they get many supplemental veggies, etc.

Also, the membrane seems very tough on most of the eggs.  I have to WORK to crack them!

From egg layers to meat birds, I love them all.  Have you kissed your chickens today?
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From egg layers to meat birds, I love them all.  Have you kissed your chickens today?
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post #2 of 17

I've gotten a few rough egg shells from newly laying hens.  I consider it to be just a hiccup in the laying system.  I wouldn't worry unless it became a regular occurence.
Also, the membrane is thicker and makes the egg harder to crack in our home fresh eggs compared to store bought.  smile

If there ever comes a day when we can't be together keep me in your heart, I'll stay there forever - Winnie the Pooh
I'll never develop a thick skin.  Thick skin leads to a hard heart and I never want to be one of those people.
A slave to LF brahmas, seramas, cochins, sebrights, bredas and call ducks.  R.I.P. Dragon, the crossbeak.  Thank you for teaching me so much about life.

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If there ever comes a day when we can't be together keep me in your heart, I'll stay there forever - Winnie the Pooh
I'll never develop a thick skin.  Thick skin leads to a hard heart and I never want to be one of those people.
A slave to LF brahmas, seramas, cochins, sebrights, bredas and call ducks.  R.I.P. Dragon, the crossbeak.  Thank you for teaching me so much about life.

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post #3 of 17

Can't answer the question regarding shell roughness, but the toughness of the membrane inside the shell is due to the eggs freshness.

Store bought eggs are washed, which removes a light film on the outside of the shell that helps to preserve the egg.  It is some type of natural chemical from the hen.

Store bought eggs are then sprayed with something, mineral oil I believe.

It's really bad trying to peel a boiled egg!!

post #4 of 17
Quote:
Originally Posted by Carolina Chicken Man 

Store bought eggs are washed, which removes a light film on the outside of the shell that helps to preserve the egg.  It is some type of natural chemical from the hen


The term is BLOOM, a naturally accuring film that helps protect the egg's.

Standard White Cornish, Dark's & White laced Red Cornish Breeder..........If you don't have Cornish you don't have Chickens. Breeding the best, to the best.
As good as a few and better than most, What You'll Tolerate in your flock is what you'll get.
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Standard White Cornish, Dark's & White laced Red Cornish Breeder..........If you don't have Cornish you don't have Chickens. Breeding the best, to the best.
As good as a few and better than most, What You'll Tolerate in your flock is what you'll get.
Reply
post #5 of 17
Quote:
Originally Posted by al6517 
Quote:
Originally Posted by Carolina Chicken Man 

Store bought eggs are washed, which removes a light film on the outside of the shell that helps to preserve the egg.  It is some type of natural chemical from the hen


The term is BLOOM, a naturally accuring film that helps protect the egg's.


Yeah, like I said natural chemical from the hen that is a light film on the egg.

post #6 of 17
Keeper of a few domestic critters.....30+Cool Chickens, 10+Adorable Calls, 3 Sweet Muscovy hens, 3 Ornery Pilgrim geese, 6 Wonderful Cats & 2 Awesome dogs.
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Keeper of a few domestic critters.....30+Cool Chickens, 10+Adorable Calls, 3 Sweet Muscovy hens, 3 Ornery Pilgrim geese, 6 Wonderful Cats & 2 Awesome dogs.
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post #7 of 17

Rough shells happen when eggs are delayed in the uterus and extra calcium is deposited. My ISA's are egg bound prone and have a fair amount of these eggs. Usually a shelless egg will follow since there is a backlog.

Our bad habits is what makes life worth living.
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Our bad habits is what makes life worth living.
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post #8 of 17

Not to worry, necessarily.  I have several chickens who consistently lay like this.  It may be, as the previous poster said, that the egg's on the way down longer.  Or it may be, as I've been told, temporary excess of calcium, being naturally excreted, just as it should. 

Either way, I have not yet had an eggbound hen, ever in several years of seeing these beautiful individual eggs.

love, chickiebaby
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love, chickiebaby
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post #9 of 17
Thread Starter 

If sandpapery shells are indicative of excess calcium being excreted, should I cut back on the amount of ground eggshell I offer?  I imagined the chickens would eat no more than what they need, but every time I sprinkle eggshell on their food, they seem to greedily gobble it up.  Can I trust their instincts, or is there a rule of thumb to follow?  I give them maybe 2 tbsp. per day total, for 7 hens.

From egg layers to meat birds, I love them all.  Have you kissed your chickens today?
Reply
From egg layers to meat birds, I love them all.  Have you kissed your chickens today?
Reply
post #10 of 17

I have one hen that lays an egg without much bloom on it.  That egg never feels as silky smooth as the other eggs.

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