List of triple clean Shorthorn bulls

[Hopster1000]

E226X - most common
NT419 - sometimes
F94L - sometimes

A test bull for the Irish AI tested for double E226X. Grandparents being Waukaru Patent and Neearra Judith on one side of his pedigree and Perfect Storm and a Dovea Sir James cow on the other side.
He will be welcomed in Ireland commercially as he is not extreme, has been genotyped for good milk as well as growth, and will suit the Irish market.

 

[mark tenenbaum]

It sounds like the gene comes from the Patent and or Auastralian? Sides? But its hard to say-Some of the irish cattle may go back to other breeds like Improver-but the ones I saw when i was there (1992) looked pretty much like the ones that first came in the 70s There had not been anything much available for the breeders to use at that time. I got to Visit John Mcnally, Kevin Culhane, and Edward Quane-They all said that outcross genetics were needed because the cattle they had were starting to go backwards in quality due to over a century of linebreeding O0

 

[aj]

Could the Angus have gotten it through some Belgium Blue funny business.....I wonder out loud?

 

[Boreal]

Could the Angus have gotten it through some Belgium Blue funny business.....I wonder out loud?


Probably not. Blues are known to have developed from British breeds and the nt821 mutation predates the formation of blues.

 

[aj]

thanks

 

[Duncraggan]

E226X - most common
NT419 - sometimes
F94L - sometimes

A test bull for the Irish AI tested for double E226X. Grandparents being Waukaru Patent and Neearra Judith on one side of his pedigree and Perfect Storm and a Dovea Sir James cow on the other side.
He will be welcomed in Ireland commercially as he is not extreme, has been genotyped for good milk as well as growth, and will suit the Irish market.

The bull does look quite extreme phenotypically!

 

[mark tenenbaum]

If the Irish or whomever use a bull with "milder doublemuscle than a Belgian Blue" are there breeds like Limos and Charolais that are considered the ideaL? And are they from the strains-variations listed or other types of this genetic condition? O0

 

[Hopster1000]

E226X - most common
NT419 - sometimes
F94L - sometimes

A test bull for the Irish AI tested for double E226X. Grandparents being Waukaru Patent and Neearra Judith on one side of his pedigree and Perfect Storm and a Dovea Sir James cow on the other side.
He will be welcomed in Ireland commercially as he is not extreme, has been genotyped for good milk as well as growth, and will suit the Irish market.

The bull does look quite extreme phenotypically!

The picture online of the Irish bull is of him at approximately 13 months I think.

I would agree totally that he is extreme for a shorthorn, especially with the double E226X gene, although I was suggesting he is not extreme when compared to the majority of beef bulls used in Ireland. Limousin, Charolais, D'aquataine, BB, etc

 

[Hopster1000]

If the Irish or whomever use a bull with "milder doublemuscle than a Belgian Blue" are there breeds like Limos and Charolais that are considered the ideaL? And are they from the strains-variations listed or other types of this genetic condition? O0

The Limousin breed that often have the double F94L myostatin gene are considered ideal as they have the muscling as well as being easy calves, and depending on the line, they can also provide enough milk. In the Irish grading system where marbling and tenderness are not considered, then they the perfect match. Both Limousin and Charolais dominate the Irish beef market but are much more intensive to raise and fatten that British breeds.

 

[justintime]

In the past year, I have just started to test cattle for myostatin and the results have been interesting to say the least. Overall, I am surprised at the number of animals that have one strain of myostatin. I have only tested two, that have two strains. One of the cows I have tested is the dam of Waukary Patent 8161. She is now 14 years old and still going good. She carried 1 strain of myostatin ( The E226X strain, and she is free for the NT419 and F94L strains). In all my years of raising cattle, I have only had 2 double muscled calves, and they were both produced from line breeding to the same bull who has been tested to be a myostatin carrier. I am pretty sure that there has been a lot of cows over the years that carried one strain of myostatin, and I am wondering if this is something to worry about or not. In some of the reading I have done, I am finding out that there are cattle in most every breed who carry at least 1 strain of a myostatin gene. And oftentimes, they are popular lines in that breed. I also have found several cows that are free of any myostatin strains, and I am certain it is impossible to know which ones they are without doing the tests. There are usually no physical indicators as to which ones they are.

 

[aj]

Interesting.

 

[knabe]

i have a theory that double muscle carriers might appear a little thicker.

probably not true.

here's a list of putative double muscle carriers in fullblood maine's

caqui
danigo
dabla
coca cola
capone
dollar 2 maybe

not sure about any others as there is no test on file for any of them.

 

[Boreal]

In the past year, I have just started to test cattle for myostatin and the results have been interesting to say the least. Overall, I am surprised at the number of animals that have one strain of myostatin. I have only tested two, that have two strains. One of the cows I have tested is the dam of Waukary Patent 8161. She is now 14 years old and still going good. She carried 1 strain of myostatin ( The E226X strain, and she is free for the NT419 and F94L strains). In all my years of raising cattle, I have only had 2 double muscled calves, and they were both produced from line breeding to the same bull who has been tested to be a myostatin carrier. I am pretty sure that there has been a lot of cows over the years that carried one strain of myostatin, and I am wondering if this is something to worry about or not. In some of the reading I have done, I am finding out that there are cattle in most every breed who carry at least 1 strain of a myostatin gene. And oftentimes, they are popular lines in that breed. I also have found several cows that are free of any myostatin strains, and I am certain it is impossible to know which ones they are without doing the tests. There are usually no physical indicators as to which ones they are.

The question of how much worry to attach to it is a good one. Because most people I sell bulls to run an angus based herd, and an nt821/E226X compound heterozygote has known phenotypic differences from wild type animals, I feel obligated to test and explain. One commercial breeder around here didn’t care and bought a positive bull anyway, after he did some research. Another one spoke of a herd whose bulls always hip locked on his cattle so he wouldn’t buy from there. Obviously more research is needed on the prevalence and phenotypic expression of genotype but I think the days of sticking your head in the sand are over.