Monday, January 30, 2012

[CHICKENS-101] Re: change in egg shell - Sandpaper shells

 

John in New Mexico wrote:
"...I have four Buff Orpington hens that have been real consistent now at
giving an egg each a day (their 7 months old). All of a sudden four days ago we
started getting one egg that is light tan in color and the shell is
extremely rough, like 60 grit sand paper rough. I have not opened them to check
if there is any change in the egg it's self. Should I be concerned ?"

--- 15 ---
 
ProfessorChicken's
TimeWarrior Farm Chronicles
Hi John:
The interior quality of "sandpaper" shell eggs is usually fine. If you intend to eat it, it would be a good idea to break it out separately visually inspect it and give it the "smell" test.
 
Quoting from "Optimum Egg Quality - A Practical Approach", Jeffrey A. Coutts & Graham C. Wilson, 5M Publishing, Great Britian, 2007, pg. 35:
 
"Incidence
    The incidence is normally less than 1% of total production, but may be higher for some strains of bird."
 
"Cause
"Diseases, e.g. infectious bronchitis, infectious laryngotracheitis or avian encephalomyelitis."
"Control
"Follow effective vaccination programmes."
 
"Cause
"Disturbances at the time a hen is due to lay can cause the egg to be held over for another day"
"Control
"Minimise activities which create disturbances in and around the shed. Increase shed security to stop other birds and animals entering the shed."
 
"Cause
"Incorrect or changes in lighting programme"
"Control
"There should not be sudden increases in day length as pullets come into lay, or lighting changes during lay."
 
"Cause
"Water shortages"
"Control
"Make sure that the water supply is adequate, that there are no blockages in water lines and that drinkers are functioning properly."
 
 
Prof.
 
 
 

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