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Re: [RC] Cannon bone size... - heidi

I was playing around with Holly the other day measuring her for a new
headstall and I measured her cannons for the first time ever.  She's an
8 yo Morgan.  What's considered 'good'?  Hers are 7.5" measured at the
smallest spot.  Where are you supposed to measure, for that matter!?

Measure just below the knee.  And remember that the measurement is
absolutely meaningless unless put in context with the weight of the horse.
The thumb rule is 8" circumference per 1000 lbs body weight.  To
calculate how big cannons should be for a horse of a given weight, one has
to convert the circumference into a cross-sectional area, and compare
those.  (Can provide the formula if you're interested.)  There is still a
degree of variation, as bone density and other factors figure in, so I do
get a bit disgusted when people use cannon circumference as the
make-or-break trait on whether or not a horse is suitable.



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