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Author Topic: Dark Mouflon, normal-horned soays?  (Read 5436 times)

Fieldfare

  • Joined Feb 2011
Dark Mouflon, normal-horned soays?
« on: March 23, 2014, 10:17:47 pm »
Hi all- does anyone breed top-quality true breeding dark Mouflon, normal-horned soays? I would like to purchase a starter flock.

Many thanks,

Fleecewife

  • Joined May 2010
  • South Lanarkshire
    • ScotHebs
Re: Dark Mouflon, normal-horned soays?
« Reply #1 on: March 24, 2014, 02:36:31 pm »
Hi all- does anyone breed top-quality true breeding dark Mouflon, normal-horned soays? I would like to purchase a starter flock.

Many thanks,


On St Kilda and particularly Soay, there is a variety of types. 

For colours, dark phase and light phase mouflon pattern predominate, but self colour blacks, dark browns and light browns make up a small percentage of the flock, for example self black makes up 5% of the total).  White lambs are occasionally born, but tend to be nabbed by gulls and bonxies so don't survive.

For horns, polled individuals ie no horns, make up 40%, while two full-sized horns are borne by less than 60% of the native flock, and scurs (scrubby little horns) by a minority (there are no multi-horned Soay currently, although it is probable that this trait was present before the type became isolated on St Kilda, because multi-horned skull fragments have been found on many ancient archaeological sites which implies that multi-horned sheep were once widespread).  The scurs fulfil a survival niche for the breed.  In years of plenty, the tups with large horns fight for the right to run and mate with a group of ewes - their harem as with deer, and the biggest horner tends to win. Scurred males lurk around the periphery of the flock and seize the chance of mating when the dominant male isn't looking, and this provides enough scur genes to keep the trait going.   However, every few years there's a catastrophic crash in sheep numbers caused by food shortages and possibly also worm burden.  In these years, the big-horned males, who invest a lot in the growth and maintenance of their horns, die off, leaving the scurred individuals, which need slightly less food input, to pass on their genes to the whole ewe flock.  I suspect that polled ewes are successful for the same reason, but occur in much greater numbers than scurred tups.

When Prof Jewel brought the first flock to London for research purposes in the 60s, he arbitrarily preferred the dark phase, mouflon pattern type with large horns, so those are what he brought and this is the type which predominates.  However, the genes for other colours and horn types are still present.  A number of breeders are doing their best to re-establish the island percentages to the mainland flock in an attempt to preserve the full range of Soay genes.


So there is no such thing as "true breeding dark Mouflon, normal-horned soays".
For quality stock you need to go for registered animals and the best person to ask for breeders near you is the secretary of the Soay Sheep Society  Julie.Suffolk@bt.com





« Last Edit: March 24, 2014, 02:47:00 pm by Fleecewife »
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in the hills

  • Joined Feb 2012
Re: Dark Mouflon, normal-horned soays?
« Reply #2 on: March 24, 2014, 04:33:02 pm »
 :wave:

As FW says.

All our flock have 'normal' horns and we chose a selection of colours for our starter flock to try to reflect diversity of the breed.

Last year we did have more dark mouflon lambs than lambs of other colours. One of our ewes, a dark mouflon, has for the last couple of years thrown dark mouflons ..... coincidence probably but interesting!

Our flock are registered, fluked, Heptavac'd and bucket trained. The tup was from Julie Suffolks's Backforest flock and was a really gentle lad to have around.

We do have some ewe lambs here for sale (last years). If you want any details or a chat about Soay in general feel free to PM.   ;D

kanisha

  • Joined Dec 2007
    • Spered Breizh Ouessants
    • Facebook
Re: Dark Mouflon, normal-horned soays?
« Reply #3 on: March 24, 2014, 04:44:55 pm »
In terms of genetics for colour and pattern a dark phase mouflon pattern sheep  would be dominant to both light phase mouflon and selfs of either dark or light phase so it should predominate when the there are no other selection pressures to consider.
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in the hills

  • Joined Feb 2012
Re: Dark Mouflon, normal-horned soays?
« Reply #4 on: March 24, 2014, 04:51:56 pm »
That's interesting, Kanisha. I wasn't sure about the colour genetics in sheep as it hasn't really concerned us. We have been more interested in other qualities of the breed and only noticed possible patterns in terms of who was throwing which coloured lambs.


kanisha

  • Joined Dec 2007
    • Spered Breizh Ouessants
    • Facebook
Re: Dark Mouflon, normal-horned soays?
« Reply #5 on: March 24, 2014, 05:09:02 pm »
 :wave: In the hills - The colour genetics of the basic types described is well documented. However selection pressures on the island under "natural" conditions are quite interesting and can skew the  actual population dynamics. A colour varient may have an inherent weakness or strength which confers an advantage  or disadvantage depending on conditions. With primitives you are invariably dealing with breeds who have adapted over a long period of time to a specific environment and environmental conditions. Whilst colour and pattern can be considered "fancy" in terms of selection criteria, it can be useful to explore any associations you may notice that appear to relate either to colour or familial selection.
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sarahdean_66

  • Joined May 2012
  • Yelling Cambridgeshire
Re: Dark Mouflon, normal-horned soays?
« Reply #6 on: March 26, 2014, 08:31:48 am »
where are you? I have some predigree soays will be for sale soon. One is a dark mouflon.

in the hills

  • Joined Feb 2012
Re: Dark Mouflon, normal-horned soays?
« Reply #7 on: March 26, 2014, 10:05:38 am »
Hi Kanisha,

Thanks. Have read a lot of reports of studies carried out on the wild population. Find it really interesting.

Just found your website ..... interesting too!  ;D Sweet lambs.  :love: :sheep:

kanisha

  • Joined Dec 2007
    • Spered Breizh Ouessants
    • Facebook
Re: Dark Mouflon, normal-horned soays?
« Reply #8 on: March 26, 2014, 11:53:21 am »
Thank you, In the Hills, I'd be interested to know which studies you have looked at?
« Last Edit: March 26, 2014, 12:44:23 pm by kanisha »
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in the hills

  • Joined Feb 2012
Re: Dark Mouflon, normal-horned soays?
« Reply #9 on: March 27, 2014, 08:03:54 am »
Hi Kanisha  :wave:

Mainly found on the net. Just type in something like 'Soay sheep research'. You could start with St Kilda Soay Sheep Project. Also a member of Soay Sheep Society so info. from there. Also O.H has found things on UTube . Interesting to see how they caught sheep on the island!

kanisha

  • Joined Dec 2007
    • Spered Breizh Ouessants
    • Facebook
Re: Dark Mouflon, normal-horned soays?
« Reply #10 on: March 27, 2014, 12:30:56 pm »
 :sheep: :sheep:
Ravelry Group: - Ouessants & Company

Fieldfare

  • Joined Feb 2011
Re: Dark Mouflon, normal-horned soays?
« Reply #11 on: March 29, 2014, 09:45:56 pm »
Hi all- thanks for the replies. Was really looking for someone who has been selecting for good mouflon patterns and normal horns (with a view to reducing the incidence of the other colours/horn types). Will try the soay society!

Thanks,


 
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