Brandonm22
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My Grandfather always claimed that if an animal was scurred then you knew she was a horn carrier. I don't know where he got his information.
KNERSIE":2q1mrsyv said:alexfarms":2q1mrsyv said:I have had numerous Angus breeders tell me that scurred animals don't necessarily carry the horned gene. Maybe that is true in the Angus breed, but I doubt it. The old American Polled Hereford Association had a Superior Sire Program in which bulls were genetically tested in various ways and one of the qualifications for becoming a Superior Sire was the bull had to be proven to be a 100% dehorner through matings to horned cows. In the history of the Superior Sire Program not one scurred bull tested was proven to be a 100% dehorner. I have made this challenge before and no one has ever answered it YET: Tell me one scurred bull that has been PROVEN to be a non-carrier of the horned gene. In most breeds scurred bulls are discarded, but in the old APHA some top notch scurred bulls were tested, if they weren't top bulls they probably would never have been kept...So please don't start the argument about "scurrs are a sign of superiority". IF someone can tell me of a proven 100% dehorner that is scurred, then I will start to believe the notion that there is no linkage between the presence of scurrs and the presence of the horned gene. With the current dna tests for horns, it looks to me like a 100% dehorning, scurred bull ought to have been identified.
I've tried in vain to get factually correct information on scurs, most of the research is quite old and not a single paper came to a concise answer. For a long time I believed the sex linkage to be correct, but that has recently been proved wrong in my herd or atleast not exactly correct. A smooth polled cow had a lightly scurred heifer and a smooth polled bull calf the next year, if the sex linkage was correct the bullcalf must have atleast one scurred allel and should have been scurred.
I am currently doing an experiment in a neighbours herd of mostly horned herefords and some of my polled bulls. So far a scurred bull has sired about 60% horned calves and not a single scurred calf. A smooth polled bull has sired 100% polled, but its still too early to tell with certainty whether he sired some scurs or not. Previously I've used homozygous polled bulls that never sired a scurred calf, hopefully this bull at the neighbours will also do this to atleast give me a better indication what to expect as far as scurs go in homozygous polled bulls.
For the time being I have seen nothing that has proved my theory, of all scurred bulls are heterozygous, wrong.
Keren":i9r86xzv said:The way I learned it, there is a difference between incomplete dominance, and co-dominance.
With incomplete dominance, you have
RR being red
WW being white and
RW results in PINK
With co-dominance, you have
RR being red
WW being white and
RW being both red and white ie ROAN
Same with Red AngusJovid":17yjdtg1 said:You all are wearing me out on this hide color and horn thing.
If you raised Red Polls you wouldn't have to worry about either one. All of them woul be red and they would be polled.