[Jacob-list] WHITE LAMBS

[Linda]

I read an article on spotting that said studies showed that breeding 
lightly marked (as in more white than black) animals together could 
eventually produce an all white (one big spot)  lamb .

On 3/31/2012 7:34 PM, tim koenig wrote:

> Just a note...the white ewe lamb I originally posted about, has dark

> BROWN eyes. No blue at all.

>

>

> On Sat, Mar 31, 2012 at 11:41 AM, Neal Grose<nlgrose at yadtel.net>  wrote:

>> In my experience, this is testable by crossing the white or lilac Jacob to a

>> homozygous white breed. The result should be a black or mostly black lamb.

>> The piebald gene is mostly recessive (that too can give you some weird

>> results depending on the white breed. Suffolk, Corriedale? You might get

>> black and grey...)   The best test would be to breed to a moorit, which is

>> the least dominant color, therefore all of the genes from the Jacob allele

>> would express.

>> It dawned on me that something weird was up the year we bred a lilac carrier

>> Jacob ram over 4 white Lincoln X Finn ewes and got 13 black lambs. At any

>> rate, % color will vary over a wide range, and will tend to expand that

>> range without counter-selection. In other words, the more we don't select

>> for a breed standard, the less the flock will look like the breed standard,

>> regardless of "purity".

>>

>> Neal Grose

>>

>>

>> -----Original Message----- From: Carl Fosbrink

>> Sent: Saturday, March 31, 2012 12:28 PM

>> To: G&  J Johnston ; Jacob-list at jacobsheep.com

>>

>> Subject: Re: [Jacob-list] WHITE LAMBS

>>

>> Since a Jacob cross is black with usually a white spot on it's forehead I

>> have been told that a Jacob with close to 15% dark is more likely to be pure

>> Jacob than one with close to the 85% dark. I don't know about the all white

>> other than an albino. Albinos can occur in any animal. I don't think all

>> white with blue eyes instead of pink would be an albino, but simply an all

>> white sheep.

>>

>> --------------------------------------------------

>> From: "G&  J Johnston"<westergladstone at btinternet.com>

>> Sent: Thursday, March 29, 2012 7:05 AM

>> To:<Jacob-list at jacobsheep.com>

>> Subject: Re: [Jacob-list] WHITE LAMBS

>>

>>> As a Jacob is genetically a black sheep with white spots, would a totally

>>> white one not simply be expressing an all-encompassing white spot?  Or is

>>> that too simplistic?

>>>

>>> www.scothebs.co.uk

>>>

>>>

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-- 
Patchwork Farm Jacob Sheep <http://www.patchworkfibers.com>
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