Heat Wave clones semen quality??

[DSC]

How good is the quality of the hw clones semen? I have heard that some of the semen some people bought they had it tested and it was horrible. I was going to order some but want to know what everyones experiences have been? One of my buddies also told me that he bred some cows to a hw clone and the calves were terrible he went and had it dna tested and it had 6 different dna's in it.

 

[showman ne]

we've had just as good luck with conception with hw clones as any bull. as for your buddy's calves i'd say that the 6 dna's could be a bad excuse for forgetting to remember that the cow is half the equation. breed the best bull in the world to a goat and the offspring is still half goat

 

[BAILEYFARMS]

some's good some's not. Flushed two cows to hw5 they both had 12 eggs all ufo's. Have some hw2 and its great.

 

[OH Breeder]

Used Heat Wave 6 two straws on late heat and cow stuck.

 

[DSC]

No he dna tested one of the semen straws he had left in the tank, and it tested with 6 different dna's.

 

[knabe]

No he dna tested one of the semen straws he had left in the tank, and it tested with 6 different dna's.

that would be a great irony.  heatwave 6.  i've seen that bull in pasture.  don't know how he bred, fertility wise.

 

[Nasc]

I thought I read on here scientist are not able to clone from semen because the semen does not have a complete DNA chain in them. Is DNA testing of semen common for these purposes and is there expectable levels of variations for these tests? 

Didn’t the first attempt of cloning an Angus bull from semen result in a Holstein looking animal?

I could be off base here but I have been told that’s why we don’t have clones of Meyer and Cunia because the DNA from their semen does not include all the chains needs to complete a replica of their DNA code.

Someone with more knowledge on DNA please chime in on this one.

NASC!

 

[OH Breeder]

http://www.blackwellpublishing.com/trun/artwork/Animations/cloningexp/cloningexp.html

kind of fun

 

[farmboy]

nasc
i think the problem is that the sperm is only carrying half of the chromosomes of the bull him self.... idk really

 

[DLD]

Didn’t the first attempt of cloning an Angus bull from semen result in a Holstein looking animal?

Believed to have been the result of a stray skin cell from the teaser used in collecting the bull... That might account for the presence of the dna of a second animal, but not 6. 

Saying that there's dna from six different (animals ?) present sounds to me like a pretty libelous statement - hope whoever made that has the science to back it up...

 

[SHAGGY]

I can not say first hand about this 6 dna's thing or who it even was that made this claim. I will say this is not the first time i have heard it, about a year ago someone i know that seems to be pretty reputable told me of another case of this happening on a flush with HW cloned semen, not saying its true just saying i have heard this about someone a year ago. I will say that i used HW semen on a flush of what is in my mind a pretty fertile cow and got one fertelized embryo out of 17 collected. Just overall haven't had real good luck with conception rates on HW semen. I  mentioned something to the owner and he told me i over stimulated my cow, i will try and be nice here but i probably wont be using anymore HW semen on anything. On a post earlier i am not positive about being able to clone from semen but i think that is partially correct, tissues or cell samples from an animal being cloned have all the alleles contributed by both original parents, the semen would only have half the chromosomes that would have half the alleles of that animal.  

 

[knabe]

heat wave's been dna'd.  shouldn't be that hard to prove what's going on.

it appears to be pretty common to overstimulate cows with hormones.

 

[BadgerFan]

Agreed, Knabe.  And it's always the semen that's at fault when there are UFOs.  Never the semen handling, AI technique, timing of insemination, uterine environment, etc.  It's always the semen.

 

[SHAGGY]

I am not saying that there couldn't have been something wrong with my cow, but in the same breeding season i was probably 80 percent on my cows using other bulls and probably half that on heatwave and heatwave 6 semen. It wasnt just me either, a good friend of ours had the same problem and most the people i have talked to have had problems with the heatwaves semen. The vet that was doing my work said he had the same thing happen with two other cows the previous week that were also flushing to heatwave/heatwave clones. Yeah, maybe it was the cow or some other variable, but there have been an awful lot of coincidences for me. Well, im not going to drag this out any longer (i could go on all day with other stuff i know of), you wanted an opinion and here is mine, if your worried about conception rates at all, stay clear of heatwaves, too many other good bulls coming up that i would rather take a chance on. If you got one or two cows you might try it, breeding several, better buy a bunch extra!

 

[DL]

I thought I read on here scientist are not able to clone from semen because the semen does not have a complete DNA chain in them. Is DNA testing of semen common for these purposes and is there expectable levels of variations for these tests? 

Didn’t the first attempt of cloning an Angus bull from semen result in a Holstein looking animal?

I could be off base here but I have been told that’s why we don’t have clones of Meyer and Cunia because the DNA from their semen does not include all the chains needs to complete a replica of their DNA code.

Someone with more knowledge on DNA please chime in on this one.

NASC!

Cattle have 30 pairs of chromosomes - one of each pair comes from the sire the other from the dam.

All cells in the body (except sperm and egg) have 30 pairs of chromosomes in their nucleus (naturally cells without nuclei - like platelets and red cells of some species don't have chromosomes - I digress)

Sperm and egg have only one copy (not a pair) of each chromosome

Hence when you put the sperm and egg together you get 30 pairs of chromosomes - which down the road becomes the calf - its the difference between mitosis and meiosis  - if anyone cares

the 6 DNA thing makes absolutely no sense scientifically - if he had the semen tested it either would or would not be consistent with HW

 

[DSC]

Thanks for clearing it up about the dna thats just what he told me and to find out it actually wasnt him it was one of his neighbors that had the semen tested. So apparently someone is telling stories. 

 

[Nasc]

Thanks DL  (thumbsup)

 

[C-CROSS]

We use HW or closne evey year and know the conception with him will not be near what the rest of the bulls we use will be.  Final answer has great semen quality always settle 80-90 percent.