[QUOTE=Palm Beach;8649684]
I’m having seriously horrific flashbacks to high school chemistry…[/QUOTE]
It’d be nice to remember anything from high school…
[QUOTE=Brian;8649378]
Check your MJ calc. I think its 24.5 or 5.84 MCal. It’d be closer to 22% if my math is correct.
I wouldn’t worry about testing the pasture, especially if it’s going to dry up soon.[/QUOTE]
Wow. My math skills don’t get any better when I’m posting in a hurry… 
1.5 cups canola oil = 12.8 MJ
2oz cod liver oil = 2.1 MJ
1.5# TCOM = 10.6 MJ
Total: 25.5 MJ = 6.095 MCal
RDI MCal 26.3 MCal
3.46MCal is 23.17% of 26.3MCal
Which is similar to what FeedXL said about DE percentages of my fat sources:
11% canola oil (1.5 cups)
2% cod liver oil (2 oz)
9% Triple Crown Omega Max
total 22% of his DE from fat sources
Question: oils are 100% fat, and TCOM is 32% fat. So again: when trying to find out how much of his DE comes from fat, do I only account for about 3% (one third) of the 9% DE of TCOM?
[QUOTE=Xanthoria;8650274]
Wow. My math skills don’t get any better when I’m posting in a hurry…
1.5 cups canola oil = 12.8 MJ
2oz cod liver oil = 2.1 MJ
1.5# TCOM = 10.6 MJ
Total: 25.5 MJ = 6.095 MCal
RDI MCal 26.3 MCal
3.46MCal is 23.17% of 26.3MCal
Which is similar to what FeedXL said about DE percentages of my fat sources:
11% canola oil (1.5 cups)
2% cod liver oil (2 oz)
9% Triple Crown Omega Max
total 22% of his DE from fat sources
Question: oils are 100% fat, and TCOM is 32% fat. So again: when trying to find out how much of his DE comes from fat, do I only account for about 3% (one third) of the 9% DE of TCOM?[/QUOTE]
Looks like I shouldn’t be doing math in my head anymore as well.
FeedXL apparently already accounts for the 32% fat content. i.e. 1.5#'s TCOM is 10.6 MJ or 2.53 MCal. 2.53 MCal/26.3 MCal is 9.6%. I would say no for the answer of your question.
OK, so we’re making progress here!
So my horse is getting about 23% of his DE from fat. That’s a high fat diet according to Dr Beth Valentine.
His total intake is 27.65 lb/day (I added the TCOM I forgot before and tweaked some other items) so 6-10% of that would be 1.6-2.7# of fat. The weight of his fat intake is actually 14oz oil (0.8#) + 1.5# TCOM at 32% fat (0.5# fat) = 1.3# fat total.
So by Dr Stephanie Valberg’s measure of %age of ration weight it is not a high fat diet. (if 6-10% of fat is her definition of “high fat”: it might actually just be her recommendation for fat to feed)
Great. Clear as mud. I will email Dr Valberg to ask.
So I could be stuffing him with Mg and he may or may not be getting benefit from it.
I suppose if he gets too much he will get a runny butt or just pee it away, and my wallet will lighten (more.)
And the Mg may or may not help his PSSM - tough to say as I refine his diet as I learn more about weekly, which is nice and unscientific.
Glass of wine, anyone?
This just in from Dr Valberg:
“Some of the info you are looking for is not known, for example which type of magnesium is best. This is something Dr. Kellon recommends and I have not seen any research on how Magnesium will help PSSM. I don’t think it hurts but have a hard time believing that the symptoms for PSSM will change that much from one type of Mg to another.”
Et voilà - much ado about nothing.
(Unless you find a specific type of Mg that helps your horse, in which case I say rock on. For example dimag malate eally helped a non-PSSM horse of mine in the past with tension/stress)
More to come on the subject of defining a “high fat diet” from her soon, fingers crossed.
