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Offline olsun

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Another genetics question
« on: March 06, 2010, 10:49:55 AM »
My friend has a Double Stuff cow. This cow was tested free of Pha and positive for Th. She is therefore a Th carrier cow. She was mated to Hannibal, and produced a heifer. He just got the tests back on the Hannibal heifer, and she is negative Th and positive Pha. I am assuming that Hannibal has been tested free of both. If he is double clean, how is this possible? Does this mean that the test done on the Double Stuff cow were incorrect? I have always assumed that clean mated to clean could only resullt in a clean calf. Any thoughts out there?

Offline aj

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Re: Another genetics question
« Reply #1 on: March 06, 2010, 11:40:22 AM »
Don't know Hannibal's status. Unless a mistake was made reading name on straw of semen.
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Offline DL

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Re: Another genetics question
« Reply #2 on: March 06, 2010, 01:31:10 PM »
My friend has a Double Stuff cow. This cow was tested free of Pha and positive for Th. She is therefore a Th carrier cow. She was mated to Hannibal, and produced a heifer. He just got the tests back on the Hannibal heifer, and she is negative Th and positive Pha. I am assuming that Hannibal has been tested free of both. If he is double clean, how is this possible? Does this mean that the test done on the Double Stuff cow were incorrect? I have always assumed that clean mated to clean could only resullt in a clean calf. Any thoughts out there?

Double Stuff is double dirty
Hannibal is double clean

so if the cow was truly tested PHA free and if the sire is truly the sire then the calf should be PHA free ......did your friend buy the cow? perhaps as we have seen before they were suppose to be tested but weren't.Was the cow pregnant when he (she ?) bought it?  Did the calf verify to Hannibal? Have you seen the test results?

Your logic is correct but IMHO the most likely error was made somewhere on the farm - what lab ran the tests?

so, perhaps...
1. the cow was not tested for PHA but said to be PHAF
2. Hannibal is not the sire
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Offline knabe

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Re: Another genetics question
« Reply #3 on: March 06, 2010, 01:56:24 PM »
here's draft pick

http://maine-anjou.org/pagedisplay.php?id=42125

scroll down to the bottom.  there is a result on file for both TH and PHA.

do you have this for your cow?
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Offline aj

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Re: Another genetics question
« Reply #4 on: March 06, 2010, 05:24:52 PM »
Can a scurred bull be homozygous polled? If a frozen wooly mammoth carcass was dna scraped and a wooley mammoth was recreated. Could you register half blood appendix shorthorn-mammoths from a resulting mating?
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Offline aj

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Re: Another genetics question
« Reply #5 on: March 06, 2010, 05:26:29 PM »
And I forgot to ask....would the mammoth downsize the Shorthorn. Thanks in advance..
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Offline Olson Family Shorthorns

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Re: Another genetics question
« Reply #6 on: March 06, 2010, 05:45:56 PM »
And I forgot to ask....would the mammoth downsize the Shorthorn. Thanks in advance..

They might, but you'd have to get the Siberian sub-species. More hair, less frame.  How would the tusk/horn issue work out? 

They could also be registered Chi.
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Offline cowman

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Re: Another genetics question
« Reply #7 on: March 07, 2010, 10:04:48 AM »
And I forgot to ask....would the mammoth downsize the Shorthorn. Thanks in advance..

They might, but you'd have to get the Siberian sub-species. More hair, less frame.  How would the tusk/horn issue work out? 

They could also be registered Chi.

Ok that's funny.  (lol)

Offline DL

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Re: Another genetics question
« Reply #8 on: March 07, 2010, 12:00:17 PM »
Can a scurred bull be homozygous polled? If a frozen wooly mammoth carcass was dna scraped and a wooley mammoth was recreated. Could you register half blood appendix shorthorn-mammoths from a resulting mating?

The Wolly Mammoth is known to be homozygous for both the wooly gene and the mammoth gene - therefore if you cross your WM with a shorthorn your F! would be wolly, mammoth and roan
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Offline jbw

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Re: Another genetics question
« Reply #9 on: March 07, 2010, 12:21:53 PM »
If the shorthorn was homo. polled, would that mean the f1 offspring for sure not have tusks????

Offline Olson Family Shorthorns

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Re: Another genetics question
« Reply #10 on: March 07, 2010, 12:28:20 PM »
If the shorthorn was homo. polled, would that mean the f1 offspring for sure not have tusks????

If they're the same gene......I can just see it now...a tusked, horned, TH/PHA carrier, shag monster from the frozen north.
Shorthorn cattle and genetic opportunities available at all times. (515) 520 1972

Offline PLKR

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Re: Another genetics question
« Reply #11 on: March 07, 2010, 03:26:11 PM »
If the shorthorn was homo. polled, would that mean the f1 offspring for sure not have tusks????

If they're the same gene......I can just see it now...a tusked, horned, TH/PHA carrier, shag monster from the frozen north.
;D  Is semen available? Would it be collected already frozen?   <beer>

Offline aj

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Re: Another genetics question
« Reply #12 on: March 07, 2010, 04:20:52 PM »
I would thing it would be a heck of a mascot for some college. Would put Bevo to shame. But then you have the Kansas Jawhawk. What in the holy god almighty is that thing a cross between? Maybe a dough-dough bird and a vulture?
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Offline aj

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Re: Another genetics question
« Reply #13 on: March 07, 2010, 04:32:43 PM »
Could a unicorn be scurred? I would think a horned unicorn.....being the last one in the working chute....may help keep the cattle moving. Might work better than a blue heeler.
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Offline justintime

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Re: Another genetics question
« Reply #14 on: March 07, 2010, 05:58:52 PM »
A polled Unicorn is commonly referred to as a "goat".
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