Showing posts with label genetics of coat color in cattle. Show all posts
Showing posts with label genetics of coat color in cattle. Show all posts

Friday, June 17, 2011

Spotted Calves Born in the Dinefwr herd of White Park Cattle in Wales

"So. . . you don't like my spots?  Check out my horned Welsh cousins . . ."
  J.West's Tootsie, Sired by J.West's S.S. Carter 

You have to see this May 2011 video of  horned White Park Cattle on the grounds of old Dinefwr Castle in Wales.  Some of the cows have calves at foot, and altogether it is a perky upbeat video you don't want to miss.  But, Lawrence Alderson, late of the Rare Breeds Survival Trust in the UK, must be cringing every time he thinks about this video in the public venue.  This particular herd of White Park Cattle have been under his purview for many years, and the very natural manifestation of SPOTS in many of the calves quite belies the sputtering stance of the horned White Park breeding either all white or all black bodied calves -- or was that just the theoretical genetically pure Chillingham herd that purportedly only has solid black calves occasionally, never parti-coloured or spotted?  Hard to keep up with the yarns. 

Regardless, the Dinefwr cattle are quite beautiful, very impressive, and I was glad to have the video brought to my attention.  It is interesting to note that you can only identify one or two cows with spots along the neck in this magnificent herd.  Sadly, I'm fairly sure all those pretty calves with spots are not long for this world, as in days of old they'll be culled by the knife as unacceptable - male and female alike.  It would appear that despite all these decades upon decades leading to well over a known century of killing spotted or overly colored calves -- those babies just keep on coming.   Why?  Because spotted calves are a natural manifestation of the breed's genetics -- accept that, embrace that, and you won't be so upset when two perfectly white animals give you a calf with spots.

"I was snow white when I was born!  My skin grayed or blued,
 depending on who you talk to, or maybe it was that way from the get go, ask my human Mom,  she might not have noticed at the time, all I know is I'm
 this cool dun white color!"  J.West's El Presidente

In regions of the country where the sun can be intense, it is preferable to have cattle with gray or black or blue skin, whatever you choose to name it, both around the eyes and nose and on the vulva and rectum of the cow, as both are constantly bearing the rays of the sun thoughout their life moreso than any other vulnerable area of your cows.  In my experience, a British White cow with black spots on her body hair will also be more likely to have sun protective black spotted skin on her vulva and rectum, as well as all the rest of the desirable dark pigmentation of the eyes, nose, teats, etc... When possible, breeding decisions should include consideration for maintaining or improving the skin pigment of sun vulnerable areas, particularly in hot climates such as Texas.

The Dynevwr (Dinefwr) herd of white cattle actually date back to at least the 10th century A.D.   Records exist that document the payment of white cattle with colored points as a tribute to the ". . . Welsh lord of Deheubarth" by those seeking his pardon.

Here is a passage from a lovely Welsh fairy tale, The Lady of the Lake, that makes reference to the Dynevwr (Dinefwr) herd of white cattle - and it's good to see the dear Lady thought enough of the speckled and spotted cows that she took them on home as well.  This old version of the fairy tale provides some of the original Welsh language side by side with the English translation.  Follow this link to the Sacred-Texts copy of The Lady of the Lake if you'd like to read the whole charming story.

She started off immediately towards Esgair Llaethdy, and when she arrived home, she called her cattle and other stock together, each by name. The cattle she called thus:
Mu wlfrech, moelfrech - Brindled cow, bold freckled,

Mu olfrech, gwynfrech - Spotted cow, white speckled;

Pedair cae tonn-frech - Ye four field sward mottled.

Yr hen wynebwen - The old white-faced,

A'r las Geigen - And the grey Geigen

Gyda'r tarw gwyn - With the white bull

O lys y Brenin - From the court of the King,

A'r llo du bach - And thou little black calf,

Sydd ar y bach - Suspended on the hook,

Dere dithe, yn iach adre! - Come thou also, whole again, home!

"I come by my spots honestly and where them proudly . . . no worries, just keep me in green grass!"
J.West's Tom Sawyer - Sired by the English bull De Beauvoir Huckleberry Finn, and his own dam was sired by the English bull Woodbastwick Randolph Turpin . . . so he's pretty predominantly English with a great American punch by way of his Popeye sired granddam, HRH Bountiful, bred by Halliburton Farms. 

Thursday, February 11, 2010

British White Cattle - Selection and Breeding for Color Pattern

Many thanks to Diamond C British Whites in Smithville, Texas for these photos of her Tom Sawyer sired calves. The first photo shows a newly born bull calf from this past week, having a very nice low birth weight of 64 lbs, with his sister, Diamond C's Taffy, relaxing beside him.  Taffy is about 2.5 months old in the photos.  Both calves are well marked and well made youngsters.  (Visit Lazy A Ranches for a series of charming photos of their Tom Sawyer sired heifer.)

Among British White breeders there are some who perceive a 'perfect' marked British White as one that is a pretty white one with black points and as few spots as possible.  However, historically, as in for several hundred actual years, there has always been varying degrees of speckling and spots about the neck and body in the herds of England of our quite ancient polled 'Park' breed. Even today many of the most revered British White bulls of England exhibit those very traits.

What we all strive to over come is the appearance of the line-backed markings, which are clearly 'over-marked' calves as defined by our breed standards.  Eight or so years ago, when I bought my first British Whites, I was unaware of any prevalence of over-marked calves occurring, or of a stigma attaching itself to the dam, or sire, of those over-marked calves.  I even sold one over-marked bull calf into a starter seedstock herd in my ignorance.  The bull was bought at the side of his dam and was registered, and actually did a fair job of producing nicely marked calves.

Of course, in the beginning, I largely fell hard for the breed's storied history and unique beauty, and bought what I found available to put in my pastures, without any actual knowledge of what I should be asking or looking for in judging the cattle I purchased.  I was quite fortunate to get some really nice foundation animals to start my British White herd.  However, had I been so very judgemental and critical, I would have not have purchased what became significant females in my herd, such as CRae 215G, who had scurs, but was in all other traits an outstanding female; or HRH Bountiful, who is quite spotted, and has had two over-marked calves, one before I purchased her, and another sired by DFTX Watson.  Regardless, I wouldn't think of letting her leave my pastures.  I've no doubt that the two over-marked calves resulted from her genetics, but in a rare breed such as British White, I certainly can live with that.  (Note the linebacked calf in the British White Cattle Society photo below, and the strongly spotted and handsome English bull in their photo above.) 

Today, I find that buyers are much more informed and particular than myself when they approach the decision of choosing the British White breed and in the selection of their seedstock herd.  As well, I am more informed and try to take great care in providing a buyer with all the information of consequence that may impact their buying decision; whether it be scurs present in a cow, an over-marked parent, or an unruly nature.  Eight years ago, I had no idea what a scur was, or that it was undesirable.  I'll never forget my young niece, she was about 11 years old then and my pasture buddy whenever she could come and visit, gleefully pointing out to me all the cows in my herd that had scurs, she was quite proud of herself, and she was remarkably dead-on in her assessment.

I've no idea why now some aspects of our breed are more focused upon than eight years ago, perhaps the breed has made greater strides in the last ten years versus the thirty breeding years in the USA that preceded.  Regardless, this new focus on 'perfect' and zero spot markings is perhaps leading to the dreaded 'single-trait' selection that over time leads to breeding and buying decisions that introduce undesirable traits as to conformation of individual animals, and may as well lead to under-marked animals, such as occurred in the ancient horned Chillingham herd at different points in its storied history.

On the other hand, the education and focus of breeders on rooting out scurs is one that should be addressed; and in fact in England a scurred animal is not permitted registration under the breed standards of their British White Cattle Society.  As scurs are fairly commonplace in our American herds of British White cattle, the eradication of scurs from registered animals would certainly require a structured approach and goodly period of time. 

As well, the Society began a structured closure of their breed-up program in 1996, in order to ". . .further continue the process of ensuring that the British White remains true to the type that has graced our countryside for centuries."  This very topic comes up from time to time among our members, but is generally tabled as just not the right time.

**********

The most recent English semen imported to the USA was that of Huckleberry Finn.  Huck Finn has lots of spots, and I don't recall anyone being terribly concerned about that in the odious ordeal most sustained in finally acquiring semen on this English bull.  Use of his semen has declined a great deal as there is a perception that he will mostly give you over-marked calves.  However, only one over-marked Huck Finn calf was ever born in my herd; and the fault lay equally with the dam -- one of my original foundation heifers of standard markings.  But, the tendency for Huck Finn to throw over-marked calves is certainly present in his genetics, as I learned in England that his dam was in fact an over-marked pedgiree English female.

That said, generally an over-marked animal is the result of a 'nicking' of similar genetics with the female he is mated with.  Probably one of the single most important questions breeders should ask about animals they are considering purchasing, is whether the animal has any overmarked females in at least the prior four generations, on either the dam or sire side.  Relatively new breeders such as myself would not be able to answer that question, as it is not revealed on registration pedigrees; and I breed just as blindly as everyone else with my older females.  This information would require a call to the BWCAA and a look up of individual animal records.

If you're really interested in trying to understand why within the British White breed there are speckled, roaned, and line-backed animals born to standard marked parents -- I recommend a close reading of the in-depth research on the genetics of color presented by the Double Helix ranch, a prominent breeder of Texas Longhorns.  The English Longhorn and the horned White Park were inter-bred in their long history -- the horns of the Longhorn leaving their mark on many examples of the horned White Park today, and the color pattern of the horned White Park leaving its mark on the English and the Texas Longhorn today.


  Moorside Black Knight, Sire of Hevingham Polaris, Gr. Grandsire of Tom Sawyer
Hevingham Polaris, Awesome Sire of Huckleberry Finn, Grandsire of J.West's Tom Sawyer, Follow this link for a photo of an aged Polaris at pasture, note he is blue-skinned and does have speckling.
 
De Beauvoir's Huckleberry Finn, Sire of J.West's Tom Sawyer


J.West's Tom Sawyer
  
J.West's Zeus, Son of Tom Sawyer, Maternal Grandson and Paternal Gr. Grandson of Popeye
  
Lazy A's Little Beauty, Daughter of Tom Sawyer, Maternal Granddaughter and Paternal Gr. Granddaughter of Popeye

(For a nice selection of photos of examples of British White cows and bulls in some of the herds of England, visit this Bohaty's British White page.)