The Accidental Smallholder Forum

Livestock => Sheep => Primitive Sheep => Topic started by: namethatsheep on April 02, 2018, 03:34:29 pm

Title: hebridean - white
Post by: namethatsheep on April 02, 2018, 03:34:29 pm
Earlier this year I obtained a copy of An Enquiry into the Origin of Piebald or 'Jacob' sheep  by A. R. Werner (Countryside Livestock Ltd 1988) in which the author reproduces, at Plate 7, a photograph from Richard Lydekker's The Sheep and its Cousins  (George Allen, 1912) showing a polycerate (multi-honed) white Hebridean ram from North Uist.

 Intrigued about whether white Hebs still persisted to this day I was disappointed to read on the web that Wester Gladstone flock lost its white heb late last year (http://www.scothebs.co.uk/ (http://www.scothebs.co.uk/)) and that this individual was probably the last white Heb in existence.

Though I fully understand the reasoning, it is nonetheless a little sad that the modern standard for 'fixing' the Heb breed does not include at least a sub-section for non-black registered Hebs.  With the loss of the last white Heb a little of our agricultural heritage (and genetic diversity has gone).  Perhaps it is time to save, for example, Hebs with top knots - with a sub-section - before they too disappear. I must admit I did find the Wester Gladstone webpages uplifting in respect of what they are doing to preserve the variety within the breed.

I don't keep Hebs, so apologies for these random and, perhaps, ill-informed musings.
Title: Re: hebridean - white
Post by: Fleecewife on April 02, 2018, 06:19:35 pm
Thank you, namethatsheep. I had not heard of the white tup on N. Uist - I must find out more.


Yes it was sad when Blondie died but she was 20 years old so had really done her bit. There has always been the question of whether she was truly a purebred white Hebridean or a cross, but as she came from one of the original white flocks, we like to think she was the real thing.


 When we joined the Hebridean Sheep Society back in 1996, there were 3 flocks of white Hebs, but the Society refused to see them as genuine, claiming the genetics were impossible, so they were not registerable.  When the breed was under the care of the RBST the whites were, I believe, recognised as a sub-division of the breed. What an irony that now we have the possibility of mapping their actual genome, there are no whites left.


As you say, we are fighting hard to preserve multi-horned, top knotted, scurred, polled and all Ancient Type Hebs. Given the EU rules that the HSS is the only society legally to represent the breed, it is unlikely we could have a full blown schism, but we do want them to be recognised as an important part of the breed heritage.  There are now quite a few flocks around the country which either specialise in the Ancient Type, or have at least some as part of their flock, so as long as their significance can be acknowledged, that is the first step.


In this year's HSS Yearbook, just out, I have had an article published trying to make the point of the importance of these old types, and of having at least a small number in many flocks.
Title: Re: hebridean - white
Post by: Fleecewife on April 03, 2018, 11:48:02 am
As an aside to this, did you know that there are four horned Shetlands?  Just tups, as the ewes are polled.  I suppose it dates back to before the 1927 breed standard, so they have been even more heavily selected against and for longer than white Hebs.  Four horned Shetlands do pop up occasionally though, even now.
Title: Re: hebridean - white
Post by: Marches Farmer on April 03, 2018, 01:00:45 pm
The Southdown Sheep Society got a drains-up bloodline exercise done across all the registered animals last year, due to pressure from a number of keepers (including me) who felt that the recently imported French bloodlines (with far less stringent registration procedures) were taking the breed too far from its original conformation specifications.  The results were fascinating and pointed to considerable imports of Antipodean bloodlines in the last century as well as an earlier importation of French blood.  I feel the current drive by some breeders to "improve" the breed by selecting for leggier animals for the showring or to compete with the Charollais and Vendeen imports as terminal sires may have its place in commercial circles but I don't want the genetic diversity or characteristics of the traditional Southdown to be lost in the process.
Title: Re: hebridean - white
Post by: Nelson International on April 07, 2018, 02:07:09 pm
That’s very interesting MF. At the risk of taking this thread miles off topic, I’m quite interested in the history of different breeds, and in particular the extent to which there’s been ‘drift’ in them.

Here’s a picture of some French South Downs from the middle of the 19th century:
http://www.getty.edu/art/collection/objects/56317/adrien-alban-tournachon-moutons-south-down-french-1856-1860/ (http://www.getty.edu/art/collection/objects/56317/adrien-alban-tournachon-moutons-south-down-french-1856-1860/)
Title: Re: hebridean - white
Post by: Black Sheep on April 07, 2018, 02:07:33 pm
As you say, we are fighting hard to preserve multi-horned, top knotted, scurred, polled and all Ancient Type Hebs.

In this year's HSS Yearbook, just out, I have had an article published trying to make the point of the importance of these old types, and of having at least a small number in many flocks.

I read your article with interest and would be interested in getting a better understanding of what the characteristics are of the ancient type and what advantages this brings. We have a very new flock but one ewe is very silvery grey all over and several of the others have silvery areas, e.g. on their haunches. We'll need to consider some of this when it comes to selecting a tup later in the year.
Title: Re: hebridean - white
Post by: Fleecewife on April 07, 2018, 10:56:22 pm
The Southdown Sheep Society got a drains-up bloodline exercise done across all the registered animals last year, due to pressure from a number of keepers (including me) who felt that the recently imported French bloodlines (with far less stringent registration procedures) were taking the breed too far from its original conformation specifications.  The results were fascinating and pointed to considerable imports of Antipodean bloodlines in the last century as well as an earlier importation of French blood.  I feel the current drive by some breeders to "improve" the breed by selecting for leggier animals for the showring or to compete with the Charollais and Vendeen imports as terminal sires may have its place in commercial circles but I don't want the genetic diversity or characteristics of the traditional Southdown to be lost in the process.


The way I see it is that, at the time a breed's characteristics were 'set', maybe with the writing of a breed standard, the breed was well suited to the conditions and needs of the time.  I see no harm in modifying or crossbreeding the breed to suit current needs and conditions, so long as the original type is preserved.  We often quote the reasons for maintaining rare breeds as being to have their special and varied genetics available to cross with other breeds and make a new type appropriate to 'the future'.  This is fine, again as long as the original type is also preserved.
My concern with Hebrideans is that no-one seemed to have noticed the show bias which has occurred, and for some people they actually want to deliberately eliminate the Ancient Type.  It is the same with many breeds, and the drift is often to do with the pull of showing, or with trying to return a previously popular breed to commercial use.
I see no problem with breed solcieties running ancient/original type registers alongside modern types.
Title: Re: hebridean - white
Post by: Fleecewife on April 07, 2018, 11:37:03 pm
As you say, we are fighting hard to preserve multi-horned, top knotted, scurred, polled and all Ancient Type Hebs.

In this year's HSS Yearbook, just out, I have had an article published trying to make the point of the importance of these old types, and of having at least a small number in many flocks.

I read your article with interest and would be interested in getting a better understanding of what the characteristics are of the ancient type and what advantages this brings. We have a very new flock but one ewe is very silvery grey all over and several of the others have silvery areas, e.g. on their haunches. We'll need to consider some of this when it comes to selecting a tup later in the year.


The evidence we have of Hebrideans looking very different today compared with when they first appeared as a breed, is the Storr's Hall flock photo, printed in the article in the HSS yearbook, of an early flock which had been brought down from the Hebrides, black individuals selected from a previously multi-coloured breed (possibly where the whites throw back to).  Today, photos of modern Hebs show uniformly black, 2 horned sheep.  They are very smart and eyecatching and as many breeders like to show their animals, this is their goal.  The Storr's Hall picture shows some very different animals.  Only one is two horned, the rest having four horns, or scurs, or topknots.  They have big bulky fleeces, in various shades, with some having the 'silver mantle' appearance you refer to.  This is where the sheep is very black on the face, the chest, belly, legs and tail/rump area, but with the long hairs of the body a silver, which looks like a horse blanket has been draped over them.  This is a definite colour pattern for the breed and is different from the patches of gray, which are to do with normal ageing and sometimes with a problem with copper absorption due to molybdenum in the soil.


So the Ancient Type is largely multihorned/polled/scurred/topknotted, but may include two horned specimens.  The fleece may be black (or in fact very dark chocolate brown) or a variety of shades of fawn and grey, and about 7" long for the top coat, 3" for the undercoat (the length and the fleece type remains the same for the modern type) The fleece must be double layered, with bulk and bounce to shed water.
Many Hebs start to fade as they get past about 2 yo, but this does not make them Ancient Type.  I have noticed that the blackest fleeces tend to go grey earlier than more varied colours, which may be one reason that few older sheep are shown, although there are show classes for older Hebs.
The vast majority of Hebs are two horned - about 90% compared to 40% in the 1970s, but there are multihorned modern types which have been bred to do well in the show ring - they seem to differ in conformation from the Ancient Type, being more like a modern type sheep but with four horns rather than 2.  Ancient Type multihorned Hebs tend to be a bit longer in the leg and neck than the Modern Type.
The closest we can get to choosing Ancient Type sheep is to look at their ancestry.  Without knowing the genome we can only look at the breeders and their showing history, or use of show winning stock in their flocks.  There are a few flocks around which have been unaffected by showing, many of whom have maintained a virtually closed flock, and their sheep are the closest we can find to the Ancient Type.  What we are not looking for is just scruffy versions of the Modern Type, so it's knowing both the Phenotype (what they look like) and the Genotype (their genetic make-up) which are equally important in recognising and identifying Ancient Type Hebs.  Parallel registers for Ancient and Modern would help to preserve the two types separately.


You ask what the advantages are of the Ancient Type.  There is probably nothing which makes them intrinsically better sheep than Modern ones, in fact they are all great little animals.  The reason to keeep at least some Ancient Type Hebs is to maintain the genetics 'for the future', for when farming needs, climate change and customer demand need these genes to help develop new breeds with newly desirable characteristics, such as the abiility to lamb easily and independently, to be milky and be able to raise twins, to go on breeding for many years, to keep their teeth and to have good feet - all these qualities help to reduce shepherd input and increase survival in a time of change in our climate and economic situation. Of course 'the future' is tomorrow, so we are already, as with many breeds, experimenting with crossbreeding to develop Heb crosses which are commercially viable.  As long as we maintain those original qualities, any number of crosses can also be made.  So the benefits of keeping the Ancient Type of Heb, and of many other older breeds, is for the conservation of their genetics.
One effect of showing is that show winning tups become very desirable and a quick flick through the Flock Book will show the preponderance of certain flocks as the source of many flock's breeding stock.  This effectively creates a man-made genetic bottle neck, so we can surmise that the genetic diversity of Modern Type Hebs is less, therefore less useful as a living gene bank, than the Ancient Type which has been less selected.
Title: Re: hebridean - white
Post by: Black Sheep on April 08, 2018, 11:06:53 pm
They have big bulky fleeces, in various shades, with some having the 'silver mantle' appearance you refer to.  This is where the sheep is very black on the face, the chest, belly, legs and tail/rump area, but with the long hairs of the body a silver, which looks like a horse blanket has been draped over them.  This is a definite colour pattern for the breed and is different from the patches of gray, which are to do with normal ageing and sometimes with a problem with copper absorption due to molybdenum in the soil.

Many Hebs start to fade as they get past about 2 yo, but this does not make them Ancient Type.

All ours are 2-3 years old, so whilst some of them may be developing some grey the one that is very grey would have had to fade very early. I've attached some pictures of her, which seem to show the pattern you describe. Incidentally she delivered a lovely pair of twins yesterday afternoon :-)

Quote
The closest we can get to choosing Ancient Type sheep is to look at their ancestry.  Without knowing the genome we can only look at the breeders and their showing history, or use of show winning stock in their flocks. 

This makes sense and is useful, but knowing which flocks have more ancient type sheep is more than just ones that don't appear in the show results or seem to have used stock from those - the show sheep seem to come from a small number of flocks, which suggests to me that a small proportion of owners show to begin with. Maybe the HSS/yearbook could identify flocks that are looking to preserve the ancient type.

Quote
So the benefits of keeping the Ancient Type of Heb, and of many other older breeds, is for the conservation of their genetics.

One effect of showing is that show winning tups become very desirable and a quick flick through the Flock Book will show the preponderance of certain flocks as the source of many flock's breeding stock.  This effectively creates a man-made genetic bottle neck, so we can surmise that the genetic diversity of Modern Type Hebs is less, therefore less useful as a living gene bank, than the Ancient Type which has been less selected.

Yes, and for many of us, ourselves included, an element of our decision of what breeds to keep is driven by maintaining rare/native breeds. Preserving genetic diversity is an important part of that.

Thanks for taking the time to reply :-)
Title: Re: hebridean - white
Post by: Fleecewife on April 08, 2018, 11:56:23 pm
<< Maybe the HSS/yearbook could identify flocks that are looking to preserve the ancient type.>>

It's early days Black Sheep - we have yet to get the committee to agree that there is an Ancient Type, and that its conservation is important, although there are stirrings of interest.  It is also difficult to prove which sheep are truly Ancient Type, ie rich in genetic diversity, without a whole load of research.

Without the permission of individuals I cannot print here the names of flocks which keep and support the Ancient Type, although some are on board and keen to spread the word.


You are right and I expressed myself badly about how to identify flocks with Ancient Type sheep.  In fact some flocks keep both show stock and Ancient type as tandem flocks, so I suppose what I really mean to say is that once individual sheep are flagged up as possibly being Ancient Type, then we would need to look back for several generations through their pedigrees.

Yes, I would say that your ewe has a silver mantle.  She is also sporting a wonderful chest wig, which is another primitive trait.  It would be interesting to know if her new lambs show the same trait in a couple of years.   I haven't yet looked into the heritability of silver mantles, or if it is associated with multihorns or is an independant trait.
Title: Re: hebridean - white
Post by: kanisha on April 12, 2018, 06:52:05 am
Two points primitive breed historical selection is fundamentaly different to breed development in breeds such as the southdown.
Does no one consider what factors affected selection in hebridean to assist with selection today? Why does the breed exist?
Title: Re: hebridean - white
Post by: kanisha on April 12, 2018, 06:57:31 am
Fleecewife at the risk of being contraversial and admitting that I know nothing of the breeds history viewing as an outsider. Both white hebrideans in the breed  and four horned individuals could be explained by the introduction of a jacob sheep providing both dominant black which is now known in the breed and four horned individuals.  From an ecology standpoint four horns wouldn't seem to provide a selection advantage?
Title: Re: hebridean - white
Post by: Fleecewife on April 12, 2018, 12:32:42 pm
Hi Kanisha
Four horned skulls have been found in ancient settlement sites in Britain, thought to have arrived here well before the Romans, and long before Jacobs emerged via the southern route from the Middle East, or 'Vikings' appeared on our shores.  Multi horned skulls can be identified readily from a segment of bone from the back of the skull which is triangular not straight.


Yes, it is thought that Jacobs and Hebrideans mingled in some of the parkland flocks, and a bit of BWM and Soay squeezed its way in too, but multihorns are long established in Britain.
Lambing tests have long shown that there is some black dominance in Hebrideans, which should not be there in what should be a very recessive colour scheme, and that could come from Jacobs or BWM. The white of Jacobs is caused by the spotting gene on a genetically black dominant sheep - so Jacobs are not white sheep with black spots, but black sheep with one great big white spot.  So that should mean that the white Hebs did not get their colour from Jacobs.  I must admit I am very unsure about white Hebrideans - it is a topic which is not usually looked into seriously in the breed society.


The selection which gave us the black Hebridean we know now, occurred in the late 1800s when black individuals were collected from the Western isles, taken from the generally multicoloured 'land sheep' of Scotland, and brought to country parks in Scotland and England - the best known at Storrs Hall on Windermere.  There is a photo taken of this flock when it arrived which shows us their phenotype (you can see it on my website) and most of these new arrivals, before any contact with Jacobs, had multihorns.  They were specifically chosen (by Man) for the horns and black fleece, at a time when big house owners wanted unusual animals in their parklands - such as Jacob sheep and zebras.  There are many myths about Jacob sheep history too.


The multiple horns of Hebrideans, Jacobs, Manx Loughtan, Navajo Churro and various Hungarian and so on breeds, do give an advantage, which is easy to observe in a modern flock with both types of hornset. The big horns give an immediate sense of dominance when tups are in contest, and can often be enough to stop a fight before it starts. (Think red deer stags)  Also, the animals know exactly where the tips of their horns are and can neatly take out their opponent's eye.  A contest between a multihorned sheep and a two horned sheep is usually won by the multihorn.  It could also be the case that it's easier to see off predators with neatly used multiple horns.
Title: Re: hebridean - white
Post by: Black Sheep on April 12, 2018, 02:18:04 pm
It's early days Black Sheep - we have yet to get the committee to agree that there is an Ancient Type, and that its conservation is important, although there are stirrings of interest.

Thanks, sorry not posted sooner due to lambing :-)

I can understand that so look forward to hearing more as things progress.

Quote
Yes, I would say that your ewe has a silver mantle.  She is also sporting a wonderful chest wig, which is another primitive trait.  It would be interesting to know if her new lambs show the same trait in a couple of years.

I'm sure she'll be thrilled to be told about her chest wig :-) Will keep an eye on her ewe lamb as it grows up and see.

Looking at pictures of the other girls quite a few seem to be quite wiggy too :-) So given that we'll be looking for a tup later in the year, if I want to try and maintain this are there any particular characteristics to look for apart from those already mentioned?
Title: Re: hebridean - white
Post by: Black Sheep on April 12, 2018, 02:20:43 pm
From an ecology standpoint four horns wouldn't seem to provide a selection advantage?

I would agree with [member=4333]Fleecewife[/member] that there are a number of plausible reasons why four horns could be an advantage either for direct survival (and thus breeding) or increasing the odds of breeding. There are also disadvantages such as the extra energy needs to grow and carry them about but as they were common it suggests that the advantages in the system in which they existed outweighed these.
Title: Re: hebridean - white
Post by: kanisha on April 12, 2018, 03:19:35 pm
Hi Fleecewife thanks for the reply. I'm aware of the genetics of white spotting in the jacob however dominant black would hide white at agouti in the face of selection for black ( as would appear to be the case ) . I'm curious what is the history of colour selection on the island before and after the 1800's?
 I'm also aware of the studies into horn type and advantage in the soay. However with problems associated directly with the inheritance of four horns (split eye ) it would seem to have some serious disadvantages not factored into the soay study. I find horns and their distribution on a geographical scale potentially quite informative.  Do you know if any studies have been done to try to pin down their appearance geographically and with a timeline across the breeds?
Title: Re: hebridean - white
Post by: Fleecewife on April 12, 2018, 08:11:06 pm
Black Sheep said: << So given that we'll be looking for a tup later in the year, if I want to try and maintain this are there any particular characteristics to look for apart from those already mentioned? >>

The only advice I can give is that these characteristics tend to take a couple of years to develop, so if you are going for a tup lamb or a shearling, you will not be able to choose him by appearance.

<<There are also disadvantages such as the extra energy needs to grow and carry them about >>.
I think big hornsets are heavy, and older tups can struggle with them, but I think the general consensus is that the mass of 2 horns and that of 4 horns are pretty much the same, at any given age. The difference is that the 4 horns might perhaps be weaker than the 2, being individually less massive, so it could be that 4 horns might be more likely to break in fights, although I've not seen this.
Title: Re: hebridean - white
Post by: Fleecewife on April 12, 2018, 08:52:28 pm
Hi Fleecewife thanks for the reply. I'm aware of the genetics of white spotting in the jacob however dominant black would hide white at agouti in the face of selection for black ( as would appear to be the case ) . I'm curious what is the history of colour selection on the island before and after the 1800's?
 I'm also aware of the studies into horn type and advantage in the soay. However with problems associated directly with the inheritance of four horns (split eye ) it would seem to have some serious disadvantages not factored into the soay study. I find horns and their distribution on a geographical scale potentially quite informative.  Do you know if any studies have been done to try to pin down their appearance geographically and with a timeline across the breeds?


Hi Kanisha.
My understanding of genetics is school standard only, so I'm not up to speed with agouti, alleles etc, although there is much discussion of this with Shetland sheep.  Of course Shetlands were selected from the same basic Landsheep as Hebrideans, Manx, N Ronaldsays and so on, so all should be similar.  I really hope that this is a possible explanation for white Hebs, as the society view is that whites are genetically impossible!
I find the scurs story with Soay sheep to be fascinating and unexpected but it does throw light on the workings of the theory of evolution.


For Split Upper Eyelid Defect in multihorns, I believe the problem is for the humans owning such sheep, rather than for the sheep themselves.  In only a few severe cases is the split bad enough to impact on the survival or health of the animal, and we are now suspecting that it is not inherited in a dominant way. Emily Gascoigne's PHD recent research thesis, now published, showed no link in occurrence between the eyelid status of parents and that of offspring.  This is what we have found too.  [member=16566]Big Light[/member] what is your experience with this?


The expert on the incidence of multihorned skulls in the archaeological record in Britain is Louisa Gidney.  She has found multihorned sheep bones in Roman and Pictish sites in Britain.  As far as I know, the only evidence for sheep colours come from rare fabric samples again from archaeological sites.  Louisa's work will be published in scientific papers but I have no access to those.  David Kinsman has done much research into mulithorned sheep across the spectrum, some of which is mentioned in his book 'The Black sheep of Windermere', self published ISBN: 0-9540383-0-9.  You might find some answers to your thoughts in there - it's a fascinating book.


My pet theory is that fleece colours and quality were selected by women, who would choose to breed from sheep with more useful fleece (not necessarily softer/finer) and maybe light coloured to take dyes.  Early fabric was often woven in tartan and check patterns, so needed contrast.
Title: Re: hebridean - white
Post by: Big Light on April 13, 2018, 09:09:19 am
We have had a pair if ewe lambs 2 years ago with split rather than notched eyelid which caused a little eye watering on one lamb as the hair was turned in however after trimming the hair it was fine we had planned to take them as hogget however by the time they were gimmers it wasn't having any affect on them so we kept them ( albeit in the crossing flock)
Title: Re: hebridean - white
Post by: Fleecewife on April 13, 2018, 01:36:03 pm
Thanks Big Light.  And have you found that breeding from notched parents produces eyelid problems in the lambs or not?
Our first and worst split eyelid was a Jacob cross lamb, but even then, when we took her to the vet for advice, he felt there was no problem, and there never was for her.  She was a lovely part of our fleece flock.


Do you have any views about the possible genetics of white Hebs?  Sorry to call on your knowledge as I know you'll be in the midst of lambing.
Title: Re: hebridean - white
Post by: Coximus on September 15, 2018, 02:59:48 pm
Interestingly amoung my pure Hebs I've had 3 show white marks on their front of neck which persist into adult hood, and these were all on shedding hebs which i kept for crossing.
I've seen one alleged White Hebridean in Yorkshire from registered parents, the second from the same dam sire combo but the owner was embarased and sent it off and wouldnt let me have it.
I would expect the gene pool still contains the required bits but as the flocks tend to be small in the breed, it may be unlikely for them to meet again.
Title: Re: hebridean - white
Post by: Fleecewife on September 15, 2018, 07:00:05 pm
I expect that was a remnant of the same Yorkshire flock we got our white Heb, Blondie, from.  I am unaware of any flocks still breeding pure white Hebs, because of the derision from the HSS back in the early days, when they could see no way that the genetics could work.  I wish there were still breeding white flocks as we could now do gene sequencing to see if they are really pure Heb or there has been an introduction of genes from other breeds to explain it.  I have a feeling that the genetics will be explained at some point as our knowledge increases, but by then there will be no white Hebs left.
I suppose white marks on Hebs are remnants of the spotting gene, which may indicate the infiltration of Jacob blood, which is known to have happened in parkland flocks (Jacobs are of course dominant black sheep with the white spotting gene; Hebs are recessive black)
Title: Re: hebridean - white
Post by: kanisha on September 15, 2018, 09:44:55 pm
Spotting gene is a recessive and occurs frequently in ouessants which were by selection in the majority  black  a recessive (to white at agouti)  white spotting is in general in ouessants limited to a poll spot although white spotting is variable in its expression.


Its arguable that its the dominant black in hebs which is the introduced gene...
Title: Re: hebridean - white
Post by: Fleecewife on September 15, 2018, 11:27:50 pm
As the ratio of dominant to recessive black in Hebs is 20:80/ 1:4, yes it seems logical that the dominant black is the introduced gene.  Hebridean sheep are known to have been a selection made in the 1870s-80s from the multicoloured 'landsheep' of Scotland.  That they continued to breed black tells us that they were black recessive, not dominant.  Hebs were often kept in parkland flocks with Jacobs, which are black dominant, and it seems a reasonable assumption that there would have been some mixing of the breeds.  A Jacob / Heb cross looks pretty much like a Heb to the casual observer (black and multihorned), although in fact the crossing of the more roman nose of the Jacob with the dishy Heb face produces an atypical head on the cross, and there are size and fleece differences too, as well as occasional white spots.
Title: Re: hebridean - white
Post by: kanisha on September 16, 2018, 08:00:23 am
Does anyone know why the original selection was for black sheep?


How do you get your figures for dominant black fleecewife?


My understanding is that dominant black (Extension dominant) is present in shetlands in the uk . No doubt a breed enthusiast could confirm or not.
Title: Re: hebridean - white
Post by: Fleecewife on September 16, 2018, 10:29:34 am
Does anyone know why the original selection was for black sheep?


How do you get your figures for dominant black fleecewife?


My understanding is that dominant black (Extension dominant) is present in shetlands in the uk . No doubt a breed enthusiast could confirm or not.


The Hebridean Sheep Society carried out extensive trials of mating Hebs with white breeds and seeing what colour the lambs were.  I don't know how the methodology would have stood up to in depth analysis, but the figure the HSS came up with showed that 20% of the males were black dominant in that they produced 50% black lambs on white ewes.  Black recessive males produced all white lambs on white ewes in the first generation.


I believe, from David Kinsman's research for his book The Black Sheep of Windermere, and many discussions with the author, that black individuals were chosen from the general type, because they were intended as parkland flocks.  Some owners of mansions liked to impress their visitors with the animals they had surrounding their house, and kept Jacob sheep, red deer, even zebras, so the striking black multihorned heb tups added to the fun.


The Manx Loughtan was also selected from the same basic type, purely for the preference of a large landowner (I forget his name) on the Isle if Mann, who liked the rich brown colour and bred for this.


I will be interested to hear if others have alternative information here.
Title: Re: hebridean - white
Post by: SallyintNorth on September 16, 2018, 11:24:52 am
The Castlemilk Moorit was also bred for its appearance in parkland by a man who liked brown.  He had brown cattle - Dun Galloways - too.  His inheritors sold all the brown animals, having felt stifled by the lack of colour as they grew up!
Title: Re: hebridean - white
Post by: kanisha on September 16, 2018, 12:01:56 pm
Interesting info on colour selection thankyou. Not sure if people are aware before the introduction of  multi coloured sheep some islands in the Faroes were home to a feral population of black sheep
https://en.m.wikipedia.org/wiki/Lítla_Dímun


The reason for asking was that the selection of  black was in some cases for the wool market.
Title: Re: hebridean - white
Post by: Fleecewife on September 16, 2018, 12:56:20 pm
Interesting info on colour selection thankyou. Not sure if people are aware before the introduction of  multi coloured sheep some islands in the Faroes were home to a feral population of black sheep
https://en.m.wikipedia.org/wiki/L (https://en.m.wikipedia.org/wiki/L)ítla_Dímun


The reason for asking was that the selection of  black was in some cases for the wool market.


That link took me to a wonderful page about the letter L, and various other letters and their origins


Got it now.  What fascinating info Kanisha.  From the pic, a very Soay like sheep, but black.  Very similar terrain to Soay and similar difficult access.  All shot...hmm!  Changing times.  I had heard of Litla Dimun before but thought it described the little black sheep  ::)


There is evidence, from for example some New Zealand islands, that when livestock species become feral, their colour reverts from white (in the case of sheep and pigs) to dark colours.  Presumably this is because white animals get picked off by predators sooner than coloured ones, which can lurk unseen in the undergrowth.  An example of natural selection, as opposed to selection by humans.
Title: Re: hebridean - white
Post by: namethatsheep on August 04, 2019, 01:21:18 pm
It's a dreich early August day so I thought I'd sort out my library and chanced on a reprinted  copy of Guide to Primitive Breeds of Sheep and their Crosses by Elwes (1913) which I'd obviously had for a while but had clearly forgotten about it as it was tucked out of sight.  Anyway, the salient matter is that during a long discussion on horns in the Hebridean breed he quotes a Mr M’Elfrish of Lochmaddy and provides an example of a White Heb cross:

“It is becoming yearly more and more difficult to procure a good specimen of a four-horned ram; but I have proved one thing, at least to my own satisfaction, that four-horned rams are certain, or at least almost certain, to throw four-horned lambs. A number of years ago I purchased from different parts of these islands a number of four-horned rams and put them to ewes of various kinds, native, crosses, half-Cheviots etc., and in every single case without exception the tup lambs were four-horned, and in every case the horns were exact replicas of the horns of the sires; so much so that any one could easily point out each ram’s get. The one I think you refer (Fig 16) to was a get of one of these, and was an exact replica of his sire, with the exception that by good grazing and a little hand-feeding in winter his horns developed enormously.”

Later in the chapter on Hebridean sheep Mr Elwes writes:

“The breed is evidently impure because there is little fixed type, and though the late Mr J Macdonald of Balranald in North Uist took some pains to select the four-horned type from which the old ram I show (Fig 19) is directly descended, no one in the Hebrides seems to have paid much attention to them since his death, and most if not all the of the flocks in England have been crossed at some time, with small black sheep of Welsh, Breton, or other breeds. In some cases, as in the flock of Mr Leopold de Rotheschild, who has large numbers at Ascott, near Leighton Buzzard, they have been mainly kept for their meat, in others they have run wild like deer in large parks without any attention, and have degenerated in horns, wool and carcase. {The head of a ewe bred in the park (Fig 21) for which I am indebted to Mr Holding, represents the best development of four horns that I have seen in the female sex.)  Except for their fine horns and extreme hardiness, they seem to have no special value, as their wool is too long and coarse and not so black as it looks. Fig 20 shows a yearling ram bred at Woburn Abbey by the Duke of Bedford.

“ Fig 22 is the head of a ram from Duncansby Head, Caithness-shire, belonging to Mr Sinclair of Barragill Castle, and of a strain which he calls ‘Rocky’, and which I believe to be a remnant of an aboriginal breed”. 

The attached photographs show:
- a “white Heb x” with horns that clearly would require attention, otherwise the animal would not be able to feed itself.
- a young ram with short horns and a distinct white rear patch
- the skull of a four-horned ewe
- a ram of the ‘Rocky’ strain