About this Blog

Meet my very 1st horse, Lazarus.
I couldn't wait for Santa anymore or ask one more time for a pony for my bday (after age 30 it got embarrassing). I took matters in my own hands and I finally decided to pick a pony that needed a new home. Laz found me as I contemplated with this idea. He was sweet yet very sassy, fresh off the track, Thoroughbred (OTTB).
Join us for our re-training, rehabbing from laminitis and testing all parts of mixed up horsemanship and partnership, and luck...
Showing posts with label IR. Show all posts
Showing posts with label IR. Show all posts

Friday, August 19, 2011

Back home!!

Here's my beautiful boy when I came home....still perfect. 
Of course I worry when we are away that something awful will happen, but he did great and the BO watched him like her own for me.
The BO let Laz free graze around the back property and his feet still look great, so I'm hopeful that he'll be able to continue.  I just want a more natural lifestyle for him as long as it works for him metabolically.
So far, I don't see changes in his feet and all seems to be A-ok

Laz's IR test result
Normal-non IR
I double checked numbers in Dr. Kellon's calculator as well
Still good :)
This gives me options as I plan to move Laz to a new barn, closer to me
I decided that it's too hard to drive over an hour one way and having him closer will help ease so time constraints and will make it easier for me to see him more often
I fell in love with a new small barn that is 35 minutes away that has an incredible turnout set up for Laz
(Did I mention an indoor, two outdoors, a mile long trail training course and 3/4 from a HUGE state park for trail riding) eeeeks. I hope to move him after Labor day.
I hope he adjusts well and enjoys his new barn home 
I searched high and low and after visiting over 20+ places, I had two on my list and this one was #1 choice.


For now, we work and graze and play...


More on our last ride and travels to come...

Saturday, July 30, 2011

Updates

Oh, sweet Lazarooooo
What a face he has :)

 Some good news; We got our IR test results back and according to both the endocrinologist at MSU, my Vet and the IR calculator created by Dr. Kellon; it shows he is not IR.
Great news, I don't have his numbers (they are coming in the mail) but I will double check and firm up that is true.
If he had shown up as IR, that would mean his metabolic system had dramatically changed since he foundered.
I am also hoping to move Laz to a new boarding facility (I need him closer to me I have decided) and that opens up options for barns and set ups.  Dry lot paddocks versus free roaming.  More on that to come...

Hives
They are still coming and going but mostly coming.
Frustrating.
The vinegar/water helps with immediate relief but something is causing him to welt up.
The welts change and new ones pop up and old ones disappear so I still think??? it's bug related.


Feet
Laz is walking so much more soundly 
and we do light rides and sometimes I chose to hand walk him if I think it's too hot or he's a bit more ouchy
We road walk for a mile to get our exercise
 Laz likes to grab vines, tree leaves along our walk and stir up ALL the insects that were quietly sleeping

 Here is a quick shot from yesterday; of his club foot (Right Front)
You can see the white line is starting to come back together with the beveling that is being done and it shows old blood where the wall was pulling apart from the sole and laminae
Old shot below of same hoof for comparison, just from early June;
I did another White Lighting soak on his RR, to keep cleaning out that seedy toe.
He has a black hole that showed up on the xray that I still treat. 
That RR hoof wall does NOT grow, I swear...all other 3 hooves grow like normal, but this RR still has some immense false sole, so we are taking it slow, trimming, and hoping for more sole to naturally come off as we trim some out.  
Frankenstein foot  showing laminitic lines:( 
But hopefully, with our newer trimming changes, he will start to grow out a better hoof like all his other three have.
Laz is still gimpy on it and there is still some bruising showing up under the sole.
There a few thoughts as to why this hoof is still under stress and it may be the excess of false sole didn't allow for proper growth, which was caused from shoes/wedges to begin with. But...time will tell.

Here's a  recent video after his last trim where we really took a closer look at this front and how he was using them, and really beveled (if that is the right term) at  his toes and he is moving better (even though slight)
The theory is to engage the sole, AND the frog and keep the hoof wall in the front off the ground for a better breakover
Slowly but surely :)

I leave for 2 weeks for vacation, so Laz will be on 100% rest (remaining on 24/7 turnout) and hopefully will enjoy his time off  while just munching his hay and chilling in his dirt lot.
We'll get right back to our routine when I return :)


Wednesday, July 20, 2011

Explanation of IR

What is "IR"
"IR" stands for Insulin Resistance
Not to be confused with PPID (pituitary pars intermedia dysfunction) or Cushing's (PCS)

Why am I concerned about IR?
It's strongly associated with horses that have had laminitis 
(maybe as a reason for A. causing it or B. how they react to diet after laminitis)

The science of it-for the nerds like me:

Physiology Review-  taken from online www.ivis.org
Insulin is a hormone secreted by the pancreas that stimulates the uptake of glucose by tissues when
sugar is abundant (i.e., after feeding). Skeletal muscle and adipose tissues are the major sites of
insulin-mediated glucose uptake, but the liver also
responds to insulin by increasing the uptake of glucose from the blood. 
Insulin binds to receptors on the surface of plasma membranes. 
It triggers aseries of internal events that results in the movement of glucose-transporter proteins (GLUT4) to the
cell surface, which facilitates rapid glucose uptake.
Insulin plays an important role in the storage of energy by moving glucose into cells where it can be
stored as glycogen or converted into fat.
IR
This condition is defined as the failure of tissues to respond appropriately to insulin. 
There are numerous mechanisms responsible for IR including reduction in the density of i
nsulin receptors on the cell surface, malfunction of insulin receptors, defects in
internal signaling pathways, and interference with the translocation or function of GLUT4 proteins.
 IR and Laminitis
All of the pieces of the puzzle must be assembled
before we can fully understand the association between IR and pasture-associated laminitis in horses
and ponies. There are two broad mechanisms by
which IR could pre-dispose horses to laminitis:
(1) insulin resistance might impair glucose delivery
to hoof keratinocytes, or (2) insulin resistance could
alter blood flow to the foot. The first theory is supported by results of a study performed by Pass et al
in which it was shown that hoof tissue explants kept
in culture separate at the dermal-epidermal junction when deprived of glucose.
 Furthermore, GLUT4 proteins
are found in equine keratinocytes, which suggests
that insulin-stimulated glucose uptake occurs in the
hoof. Studies examining the relationship between
IR and blood flow have not been performed to date in
horses; however, insulin is known to act as a slow
vasodilator in humans, and IR has been associated
with a decrease in peripheral vasodilation.
If IR is a determinant of susceptibility to pastureassociated laminitis, then what triggers the laminitis episode itself? It seems that non-structural
carbohydrates (NSC) within pasture grasses play an
important role in this process. Most NSC measurements include simple sugars, starch, and fructans
(polymers of fructose), and levels of these components vary considerably within grass according to
geographical location, soil type, weather conditions, and time of day.
NSC are likely to affect the susceptible horse in two ways. First, excessive sugar
consumption could exacerbate IR like it does in diabetic humans. Second, consumption of large
quantities of NSC might alter the bacterial flora
found within the large intestine. These alterations
in bacterial flora are thought to increase the production of as yet unidentified triggering factors for laminitis that may include exotoxins, endotoxins, or vasoactive amines.
Alterations in large intestinal bacterial flora have been induced by orally administering oligofructose (a fructan) to horses.
***
Here is another great site to read for IR and why it's becoming more prevalent in our horses
***
Whoa, right????
Yea, welcome to my world.
To simplify-there are reasons things happen.
I'm trying to figure out WHAT caused Laz's laminitis.
Was it Putomac? If so, that means he didn't have an IR reaction to grass that caused his laminitis. 
If so, is he now considered a true IR horse, or non IR? 
Did that bout make him more susceptible to becoming an IR horse?
Laminitis to me, is like Pneumonia. Once you have it, you can get it again much easier so I want to have all the answers I can to allow for his diet to be catered to his needs and his health.

Here are some easy symptoms to look for if you suspect your horse may be IR and shows signs of foot sore:
overweight
cresty neck
voracious appetite
'easy keeper'
patchy fat (sholders, rump, elbows, neck)
orbital eye fat
weepy/draining eyes
laminitis/founder
stretched white line

According that list, Laz has the last two symptoms, so we MAY be lucky and he may not be IR, which will help me adjust his lifestyle/diet.


If you think your horse's feet are sore-start dissecting their diet (and trim).
They are RELATED completely. Not always (but so so so often!!!)



Luckily, I have Michigan State University so close to us, and they are one of the TOP schools for Animal Science
The IR test that I am doing is THIS

There is so much more to IR and diet and horse's hoof health, this post could go on for hours.  Many of you could add to this, and please feel free!!!