[Jacob-list] importations

Hobsickle at aol.com Hobsickle at aol.com
Sun Sep 20 15:26:09 EDT 2009



I have long since forgotten what the exact pedigree of that Jacob-like ram
was. (It seems like it was a cross between at least two more common,
modern breeds.) I do remember that there was no indication of Jacob blood in
the ancestry and that neither of the parents bore any resemblance whatsoever
(I saw them both) to Jacobs. I expect that when the lamb grew up its
size/conformation wouldn't have been Jacob, but it's markings sure were!

-Dan

In a message dated 9/20/2009 3:12:28 PM Eastern Daylight Time,
nlgrose at yadtel.net writes:

Everything has a starting point. What we call purebred is a collection of
animals of similar traits that have been isolated, inbred, and reselected
for type. It might have been 50 years ago, or 150 years ago, or 1500 years
ago. Other than Soay, which is not strictly a domestic breed, the only thing
that would fit the later standard would be Merino and English Longwool.
(Neither exists in a form that they had 1500 years ago).

You don't say wither the sheep you saw had mixed Jacob ancestry. I have
seen plenty of 3/4 Jacob lambs. There is always something askew with these
sheep: the fleece is too heavy, early greying, the bone is too round, the
color pattern is funky, ...something. There is no Jacob gene. Jacob-ness comes
from a combination of many genes and many traits. It is certainly
possible that Jacob Crossbreds, bred back to each other might produce a lamb with
a good degree of Jacob type, but there would be a significant amount of
off-type character that would show up without careful reselection. That
doesn't mean that I think that we should allow these animals into a registry...we
have already done the hard work of multi-generation standardization for
type for an animal that mostly agrees to what we mostly agree on. With lack
of a sample of DNA from a representative group of sheep from 1880, that is
the best we can do.

Neal Grose
North Carolina


----- Original Message -----
From: _Hobsickle at aol.com_ (mailto:Hobsickle at aol.com)
To: _jacob-list at jacobsheep.com_ (mailto:jacob-list at jacobsheep.com)
Sent: Sunday, September 20, 2009 8:11 AM
Subject: Re: [Jacob-list] importations


I had an interesting experience 6 or 8 years ago. I took a couple of
Jacob sheep to a buyer who said they had a few sheep that had come with the
farm, but wanted to get into Jacobs. When I got there, low and behold they
already had a Jacob lamb...I thought. I mentioned it and they said "on no,
that's the offspring of one of our non-Jacobs that had been somewhat
inbred." Original mutation?...Recessive brought out by inbreeding?...I don't
know, but I do know that under the right circumstances something that looks
like a Jacob can be produced by non-Jacobs. My point?--references to
Jacob-like sheep may or may not refer to actual Jacobs. I'm NOT saying I think
someone is making that mistake, I'm just saying that there are other possible
answers to some of the very early "Jacob" reports. If only there were
original documentation...

-Dan

PS I wish I had documented this incident better, but I the time I was
early into my Jacob experience and didn't give it that much thought.





-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.pairlist.net/pipermail/jacob-list/attachments/20090920/45c9200a/attachment.htm>


More information about the Jacob-list mailing list