[Jacob-list] Statistics on white cats

[Peg Bostwick]

Okay - help me out.  I sorted this out mentally once, but have forgotten.
If the lamb got an E+ gene from each parent, would that sheep have black
lambs or white?   I really need to try to find my old notes - I was not as
good at record keeping early on, at least for the commercial flock.  I know
I bred one of the all white lambs to a Jacob ram once, and it had a spotted
lamb.  I know I bred one of them to a white, old type merino once, and got
an all black lamb.  (I remember that because we kept the black Jacob Merino
cross in our flock.)  It also seems to me, though, that they also had white
lambs when crossed with our white corriedale - that is where I have to go
look for notes.   

 

Peg

 

Peg Bostwick

 <mailto:peg at sweetgrass-jacobs.com> peg at sweetgrass-jacobs.com

517-626-6981

 

From: Linda [mailto:patchworkfibers at windstream.net] 
Sent: Friday, May 03, 2013 6:24 PM
To: Peg Bostwick
Cc: jacob-list at jacobsheep.com; pbpiep at att.net
Subject: Re: [Jacob-list] Statistics on white cats

 

Got too quick on the send button. The thought on the genetics list was that
a Jacob that produced a white lamb when crossbred carries only one dominant
black (Ed) gene rather than two. The lamb got the E+ gene instead of the Ed
gene. It seems possible that an all white Jacob lamb (all white meaning NO
color anywhere including horns and not an albino) may have gotten an E+ gene
from each parent. Possible, but maybe not the only explanation. 

I've never actually seen one with no color, but the pictures I've seen have
had blue eyes. Do all white Jacobs occur with brown eyes?

I had a white cat with green eyes, who could hear. She was pregnant when she
was given to me. She had three blue eyed white kittens - all deaf. I have a
calico cat that might as well be deaf for as well as she listens to me.

Linda 

On 5/3/2013 5:31 PM, Linda wrote:

This topic was recently discussed on the sheep-genetics list in regard to a
Jacob ram that sired a white lamb on a Southdown/Shetland cross ewe. The
breeder now says the lamb has pale tannish spotting, so may be a different
issue.

On 5/3/2013 9:14 AM, Peg Bostwick wrote:

Hopefully Ingrid will respond directly - but I did talk to her way back when
we had our two white ones, and at that time she gave the "one big spot"
explanation.

 

Peg Bostwick

peg at sweetgrass-jacobs.com

517-626-6981

 

From: jacob-list-bounces at jacobsheep.com
[mailto:jacob-list-bounces at jacobsheep.com] On Behalf Of pbpiep at att.net
Sent: Thursday, May 02, 2013 7:35 PM
To: jacob-list at jacobsheep.com
Subject: [Jacob-list] Statistics on white cats

 

The issue of deafness in white cats is tied to the color of their eyes.  If
the white cat has blue eyes, it will be deaf from birth.  If it has one
green eye or both eyes are green, the cat can hear.  Your local veterinarian
will verify that.

 

In rabbits the eyes have to be pink, not blue, to be a true albino.  And
since many of the Jacobs have blue eyes, if they were a true albino would
their eyes also be pink??

 

What does Ingrid Painter have to say about totally white Jacobs??






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