[Jacob-list] SUED question

[Carl Fosbrink]

 Lasell,

     I don't understand what you mean by a 4 horned "carrier". All Jacobs 
are carriers.  SUED is part of the polycerate genes. It can occur in any  4 
horn mating and is not a problem in a mild case. The genes that cause the 
horns to split can run down to the eye socket and that can cause a split in 
the eye lid as I understand it. I have looked at skulls from my own dead 
Jacobs and have observed a split in the eye socket on the skull of a 5 
horned ewe that did not show up as a split in the eye lid of that ewe.
      Some 2 horns are actually completely fused 4 horns and some are actual 
2 horns. SUED could show up in 4 horned offspring of 2 horned Jacobs because 
it is part of what causes the horn buds to split.
      I  would never cull a good Jacob with a slight notch in the upper 
eyelid because SUED is part of the Jacob breed. If we were to completely 
breed it out we would end up with a 2 horned breed of sheep and although we 
have had 2 horns in our Jacobs ever since the introduction of the English 
imports Jacobs are known for their multipule horns and I love a beautiful 4 
horned Jacob.

Carl Fosbrink

--------------------------------------------------
From: "Lasell J. Bartlett" <lasell at lasell.org>
Sent: Wednesday, March 14, 2012 7:32 AM
To: <Jacob-list at jacobsheep.com>
Subject: [Jacob-list] SUED question


> From what I understand, SUED shows up when a 4 horn carrier breeds  with a 

> 4 horn carrier, and chance has it show it. (Sorry for rough  genetic 

> description?)

> Can a 2 horn Jacob carry the gene and pass it along, so that even if  it 

> would never show up in a 2 horn sheep, it could show up in a later 

> generation if the 2 horn or its offspring, had 4 horn offspring (that  was 

> bred to carrier 4 horn)?

>

> Or does the gene NOT get passed along through the 2 horn sheep?

>

> Or something else?

>

> Under what circumstances do any of you breeders cull or not cull  lambs 

> with (milder degrees of) SUED?

>

> Lasell J Bartlett

> lasell at lasell.org

>

>

>

>

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