Re: RC: RE: Feeding During an Endurance Ride

[twoodcock@lendleaserei.com]

That's actually close to what I figured.  I guessed "generic" 40 day
bermudagrass hay should have .39% lysine judging from the ratio of protein to
lysine on the younger growth hay.  I've tried to use KER's MicroSteed (VERY
expensive program for what it does.  Glad I only got the demo and didn't shell
out megabucks for the liscense), but as you must have found, if the ingrediants
aren't know, it uses 0's and makes things look funny.  It was almost impossible
to use for adding my own feeds like the pellets I usually use.  That's why I use
the NRH program and figure the ration myself, making half-wit guesses where
needed.

-Tamara




Kim Pelletier <kim@redhorsetech.com> on 07/21/2000 09:30:48 PM

To:   Tamara Woodcock/US1/Lend Lease@LLNA, ridecamp@endurance.net
cc:

Subject:  RC:  RE: Feeding During an Endurance Ride




Hi there,

In the '89 NRC, the lysine in 40 d burmudagrass is really "unknown",
rather than zero.  The NRC will use zeros when the value is truly zero
---  when it is blank, the information is simply not available.

I wouldn't feel bad about this... there's a pretty expensive equine
ration evaluation program out there which inadvertantly substitutes
zeros for missing information.  Makes your ration look like it has the
feeding value of week-old newspaper if you did not select common horse
feeds with every nutrient analyzed.  I don't think that they're aware of
their mistake.  Who knows?

Anyway, for a good guess on lysine, you could interpolate a bit I
suppose.  Just take the 15-28 d. growth and 43-56 d. growth value for
lysine and average it.  Not real scientific, but gets you somewhere near
the ballpark at least.  Looking at the NRC itself, that would 0.33% on
an "as-fed" basis, or thereabouts.  The quality of the hay is a big
factor as well --- something to keep hidden away in the back of the
brain.

Kim
(and Lee --- delurking awhile (actually, avoiding work :-)   )

Lubbock, TX

--------------



> I don't think my, or rather Roo's, diet is lysine deficient, but since the NRH
> book says 40 day growth bermudagrass hay has NO lysine, it could be.
>
> I assumed that lysine went up when protein went up, so that 40 day growth
> bermuda grass hay has more protein, and thus more lysine than 20 day growth
hay.
> If my assumption is right, then I have enough lysine.  If the book is right
and
> the hay has no lysine, then I'm seriously deficient.


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