[aldebono]

There are certain regions that are selenium deficient. Here is a map Selenium in Counties of the Conterminous States

If you are going to supplement with Se. be sure that it is the organic version known as Selenium Yeast, not the man made version known as Selenium Carbonate. The Selenium Yeast absorbs into the body easier, while the Sodium Selenite has been reported to do nothing.

You will know if it's the Selenium Yeast because it is a more expensive supplement!

Here is an article talking about Vit E and Selenium

Safe Vitamin E And Selenium Intakes

Horses can overdose on Selenium and it is NOT pretty (sloughing off hooves). I would suggest to have your soil or horses blood tested before putting your horse on any high dose of Selenium.

There is another thread where I commented on Selenium dosing and Selenium in general.

http://www.horseforum.com/horse-nutrition/selenium-how-much-per-day-132512/

 

[crimsonsky]

thank you!

 

[deserthorsewoman]

Haven't had it, but just read about it:-0
Signs for deficiency in mild cases might be increased susceptibility to disease, due to a depressed immune system and/ or decreased fertility in breeding stock.
Severe deficiency, far less common, is characterized by weakness, impaired movement, difficulty in swallowing, impaired cardiac function and respiratory distress. Tying up also. White muscle disease in young foals.
Smart book says to find selenium levels in your soil, I.e. pasture, and where your hay is grown. There are areas where there are "pockets" of toxic or nearly toxic levels in the soil, most of the US and Canada are deficient.
"Because of the toxicity threshold of selenium is so low(between 2and5ppm), you should be aware of the selenium content of your local soils( and thus, your pasture and your hay) before you choose a vitamin E-mail and selenium supplement or a selenium-added feed for your horse". Even a mineral block needs to be checked. Your local agriculture extension specialist, co-op or feedstore is the best source of info.
(Source: "Understanding Equine Nutrition", Karen Briggs, revised edition 2010

 

[CLaPorte432]

I have dealt with it before.

My first symptom was with my gaming pony at the fair. He tied up severely, back was majorly arched, he could not walk. He was like one big contracted muscle from the shoulders back. Eventually we got him loaded into the trailer after 2 hours and got him to a vet.

Bloodwork (Complete Blood Panel) came back that he was severely deficient in Selenium and slightly dehydrated.

After that, we gave him a supplement (I wanna say Red Cell...) and he never had the tying up problem again.
Posted via Mobile Device

 

[crimsonsky]

interesting. i've added a vitamin e and selenium supplement to my horse's diet at the recommendation of an equine professional. i've noticed that he's gaining weight however we'll see if the supplement will help his other issues - hitch in the hind end, lack of muscle tone, sweating without really exerting himself and an associated rapid heart rate.

 

[deserthorsewoman]

Uh oh....smart book says signs of selenium deficiency are : patchy sweating, blind staggers, colic, diarrhea, increased heart- and respiration rates if acute( for example when a horse is given Se injections). Chronic toxicity can cause hair loss, especially mane and tail, cracking of hooves around the coronary band and occasionally hooves slough off completely.
I'd have a close look at roughage and other feeds just to be sure there isn't a hidden source of Se somewhere. Better safe than sorry.....

 

[crimsonsky]

i've gone through everything that this horse is given feed wise and he's still getting less than the recommended daily dose of selenium by a long shot. if i quadrupled the amount of supplement he's given he'd still be below the "safe" high end ingestion limit.

 

[deserthorsewoman]

I was just repeating what smart book said regarding your horse's other symptoms.

 

[churumbeque]

I would not assume anything. I would get a blood test to confirm. Selenium is poisionous so you shouldn't suppliment with out confirmation

 

[churumbeque]

interesting. i've added a vitamin e and selenium supplement to my horse's diet at the recommendation of an equine professional. i've noticed that he's gaining weight however we'll see if the supplement will help his other issues - hitch in the hind end, lack of muscle tone, sweating without really exerting himself and an associated rapid heart rate.

At the reccomendation of an equine professional or a vet and blood work? Those are majorly different.

 

[crimsonsky]

he was muscle tested - applied kinesiology. my farrier/certified lameness specialist/holistic health/dynamite distributor was the one to suggest the selenium as he had the same issues with one of his TBs who also lost weight/muscle/etc when moved onto the local pastures here in OR where the selenium is almost non-existent in the soil.

 

[Fulford15]

My friend has had 2 TB mares, both with Selenium deficiency. They were next to impossible to keep weight on them, she tried everything! She ended up getting blood tests done, and they were both Selenium deficient... so weird!

 

[crimsonsky]

My friend has had 2 TB mares, both with Selenium deficiency. They were next to impossible to keep weight on them, she tried everything! She ended up getting blood tests done, and they were both Selenium deficient... so weird!

what specifically (if you know) has she done maintenance wise after that diagnosis?

 

[Dreamcatcher Arabians]

Here in Ok we're pretty deficient for selenium in the soil. Actually, it's pretty non-existent. I have noticed problems with tying up in some horses and in new borns, I've seen more instances of them being really 'down at heel'. I've started supplementing the mares in the last trimester of the pregnancy with a very small dose of ESe and I've not had a down at heel youngster since I started it. Anyone who ties up also gets supplemented very minimally, and I've not had problems since.

 

[Fulford15]

crimsonsky - Her vet had to come out every 3-4 weeks to give selenium shots to the horses, you can also buy selenium shots from the vet if you don't want to pay for their trip to come out if you are confident enough to give them yourself.

 

[crimsonsky]

interesting. i wonder why a shot instead of a feed through supplement.

 

[Fulford15]

Sorry -- Talked to her about this, the first few weeks the vet had to give them shots, then prescribed Selenium in a powdered form to add to their grain daily.

 

[crimsonsky]

oooohhhh that makes sense. i give Dynamite's Premium E-Selenium which has proven quite effective.

 

[verona1016]

Are you feeding anything else that has selenium added in addition to the one from Dynamite? Their supplement looks like it's not actually supplying all that much- 0.342 mg per 2 scoops (recommended dosage). That's only about a third of the minimum RDI for a horse getting 20 lbs of feed per day based on the NRC's recommendation of 0.1 ppm.

The maximum recommended dosage is 2.0 ppm (or about 18 mg for the same horse), so there ought to be enough headroom to supplement the full minimum 1 mg especially in a low selenium area like ours

Calculating Selenium Levels in Horse Feeds and Supplements - Southern States