recips and twins?

[alexfarms]

I have a recip due early next month and she has an enormous gut on the right side and I often see the calf movement. She was planted with a frozen embryo. Have you ever had a recip have twins after being planted with only 1 frozen embryo?

 

[iowa hawkeyes]

yes, we had that happen.

 

[angie1]

Maybe I don't understand the process. Would they be calves from the same cow and bull (which is what you are suggesting??), or would the cow have been bred naturally before the embryo was implanted? It is not possible that one embryo becomes two.

 

[Oldtimer]

The fertilized egg splits producing two-- identical twins...

 

[angie1]

The fertilized egg splits producing two-- identical twins...

But wouldn't that be identified under microscope before it was implanted?

 

[hillsdown]

The fertilized egg splits producing two-- identical twins...

But wouldn't that be identified under microscope before it was implanted?

No, the embryo splits once implanted in the donor cow. I haven't had it happen here yet, but it does happen . Usually an embryo is only 6-8 days old when implanted and from what I have read the splitting does not happen until after that.

It is really no different than in humans. A friend of ours was implanted with two embryo's and one split ..

Or better yet, remember octomom ??

 

[Cattleman200]

They can split or perhaps the embryologist accidently loaded two embryos in one straw. I had one set of twins here out of ET work. Never really knew what happend for sure but its not something you want to happen.

Circle H Ranch

 

[MO_cows]

CM200, if you really want to know you can do a DNA test. Identical twins from an egg that split will have identical markers. Twins from 2 embryos implanted wouldn't be an exact match. Similar, because still they have the same sire and dam, but not identical.

 

[buymorebulls]

It is possible that a recip to get bred AI or by a bull while in heat, then planted with an embryo 7 days later and get pregnant from both, thus carrying two calves.

(This story as told to me 2nd hand so take it for what it is worth), came out of Glenkirks many years ago. I'm told the gomer bull was made using the "penis out the side" method and then he somehow figured out how to still get the recips bred. So, the recips were "gomer bred" then planted 7 days later. A resulting bull calf (GK Cavalier) was born with a commerical looking twin calf. Then, when Cavalier was blood typed he had abnormal blood type (as a result of the sharing of blood in-utero with the commercial calf).

FWIW.

 

[alexfarms]

It is possible that a recip to get bred AI or by a bull while in heat, then planted with an embryo 7 days later and get pregnant from both, thus carrying two calves.

(This story as told to me 2nd hand so take it for what it is worth), came out of Glenkirks many years ago. I'm told the gomer bull was made using the "penis out the side" method and then he somehow figured out how to still get the recips bred. So, the recips were "gomer bred" then planted 7 days later. A resulting bull calf (GK Cavalier) was born with a commerical looking twin calf. Then, when Cavalier was blood typed he had abnormal blood type (as a result of the sharing of blood in-utero with the commercial calf).

FWIW.

Ok, that is a bizarre story about Cavalier and it reminds me of another bizarre story I was told several years ago by a purebred Brittany Spaniel breeder: He claimed that his female dog could no longer have pups that could be registered as purebred because she had accidently had a litter of pups by a mongrel dog and according to purebred dog rules once a female has carried a nonpurebred pup her blood is now mingled with mongrel dogs and she can no longer have a purebred pup. I dismissed the guy as not knowing what he was talking about and I think I would want to see the proof on Cavalier also. If that is true, on Cavalier, then will my et calves out of crossbred cows carry blood of crossbred cows? If they carry blood of crossbred cows then certainly they will pass this on to their offspring.

 

[redcowsrule33]

Ok, that is a bizarre story about Cavalier and it reminds me of another bizarre story I was told several years ago by a purebred Brittany Spaniel breeder: He claimed that his female dog could no longer have pups that could be registered as purebred because she had accidently had a litter of pups by a mongrel dog and according to purebred dog rules once a female has carried a nonpurebred pup her blood is now mingled with mongrel dogs and she can no longer have a purebred pup. I dismissed the guy as not knowing what he was talking about and I think I would want to see the proof on Cavalier also. If that is true, on Cavalier, then will my et calves out of crossbred cows carry blood of crossbred cows? If they carry blood of crossbred cows then certainly they will pass this on to their offspring.

Your friend was sadly misinformed.

The twins share blood if the placentas fuse, and are then chimeras (have DNA from two different animals). This is probably why Cavalier had a weird test. Carrying any kind of breed will not affect the ovaries, where the DNA comes from on the cow's half, so you can breed your recips to a yak and it won't affect the offspring if bred purebred the next time. I have heard other dog people claim the same thing and it is pure BS.