[Jacob-list] Graying & Ticking / Environment

[Linda Bjarkman]

I have no idea about the mechanism (but am interested in knowing more).  What I see  
here (I'm in North Georgia) are faces that darken on sheep that do not exhibit 
ticking.   Not all my sheep so it can't be a totally environmental factor as they 
all get the same amount of sun.  The faces aren't shielded by the wool.  
Now that I think about it, I haven't seen any of RubyBelle's lambs with the darkened 
faces.  She is unfreckled and hasn't produced a freckled lamb so far and she's 8 
years old.  

Linda

On Tue, 15 Apr 2003 17:56:26 EDT, Hobsickle at aol.com wrote:
>I can't figure out how UV light can have significant affects on skin that is
>shaded by wool for the vast majority of the year.  Does anyone have any ideas
>on the mechanism?
>
>-Dan
>
>


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