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Offline aj

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Re: what is th, pha,ds cattle trait?
« Reply #15 on: July 02, 2019, 07:45:58 AM »
The way I understand it......and I might be wrong..... . A DS carrier bred to a DS carrier......may produce a DS defective calf...that is a very minimal defect. In fact it can almost be non noticeable. BUT if one of the parents is also a PHA carrier......the DS defective calf has a fairly severe defect.
People can't believe we have such a big moon for such a small town.

Offline aj

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Re: what is th, pha,ds cattle trait?
« Reply #16 on: July 21, 2019, 08:50:23 AM »
So am I correct?
People can't believe we have such a big moon for such a small town.

Offline Dale

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Re: what is th, pha,ds cattle trait?
« Reply #17 on: July 21, 2019, 06:57:00 PM »
DS--from ASA website  Be sure to pay attention to the last sentence.

Digital Subluxation (DS) is not a lethal condition from a genetic inheritance standpoint. Animals known as homozygotes are cattle that carry two copies of the undesirable gene. Homozygotes of DS, referred to as DSH in the registry. Most cattle that are DSH will show some outward signs of the genetic condition. In this case, the condition is a malformation of the rear pastern or pasterns (ankle area) of the animal. The important aspect of DSH is to understand that ALL progeny of DS Homozygotes will be at least carriers of the condition. Carriers of the DS condition, known as DSC in the registry, also need to be handled differently when mating decisions are made. Though the original mutations happened in completely separate populations, the DS condition sits on the same chromosome as Pulmonary Hyperplasia with Anasarca (PHA). It appears that the presence of a PHA Carrier can impact the phenotype (physical appearance) of a DS Carrier. In other words, if you mate a PHAC to a DSC and the unfavorable copy of both genes is passed on, the resulting calf will likely have deformed rear limbs below the hock.

Offline aj

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Re: what is th, pha,ds cattle trait?
« Reply #18 on: July 22, 2019, 01:11:04 AM »
I'll be darn......and I stand corrected.
People can't believe we have such a big moon for such a small town.

Offline Dale

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Re: what is th, pha,ds cattle trait?
« Reply #19 on: July 22, 2019, 06:02:58 AM »
We all need to be life-long learners.  One reason we watch DS so much is that our former sire JJC Wild Side was a DS carrier.  Since we see lots of merit in his daughters, we have tested around it and retain the worthy clean ones as breeding stock.  Fortunately, the PHA carriers tend to be cattle that are not needed in our program, and it would make me very uncomfortable to have deformed calves born here.

With the ever so slight chance that in the commercial herd there is PHA, Shorthorn breeders must not sell DS carriers to them.  Another of the great British breeds reportedly has sold plenty of bulls carrying defects into commercial cow herds and their chickens are coming home to roost.  Nobody wants open cows or train wrecks at birthing time.  In some areas now there are many red or white bulls running with cows that had black bulls exclusively a few years ago.  Some of the red bulls now being used in the Plains states may be the result of Red Angus keeping a closer eye on convenience traits than the black ones?  Do you see this A.J.?  I hope this does not hijack your thread. 

Offline aj

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Re: what is th, pha,ds cattle trait?
« Reply #20 on: July 22, 2019, 12:34:18 PM »
Very few Red Angus have been shown until the last couple decades. I don't that the breed has the Chianina,holstein and all of that like black Angus does. Beckton and those that started the breed didn't show and most selection pressure was just common sense and performance data.
People can't believe we have such a big moon for such a small town.

 

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