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Re: [RC] selenium - Susan GarlinghouseI had a grass hay analysis done. The selenium is 13.5ppm. When I do the math, it seems really high. Or maybe I'm not doing it right? Is this something (else!)to worry about? Thanks for your help! Ppm is the same as mg per kg, so yeah, my math comes out as an average horse eating twenty pound is getting a whole lot of selenium, even for endurance horses. There is some literature demonstrating that 8.5 ppm forage fed long term can cause chronic toxicity (though it would take levels about 40 times that high to cause acute toxicity). I would get another sample run, point out the high selenium to whoever did your sample and ask if it could be a mistake and if not, get serum Se levels checked for your horses. Any chance at all that there was a typo and the 13.5 is actually 1.35 ppm? Or even .135 ppm? In the meantime, don't kill yourself ripping hay out of the horse's mouths...worst case scenario, you can just dilute the selenium in the ration with another forage source with lower selenium. See if the broker or whoever sold you the hay is willing to work with you to solve the problem. Keep an eye out for Se toxicity symptoms---loss of mane and tail hair, horizontal bands across the hoof (they look like fever lines, but bigger and deeper), loss of appetite and weight loss. Susan G =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Ridecamp is a service of Endurance Net, http://www.endurance.net. Information, Policy, Disclaimer: http://www.endurance.net/Ridecamp Subscribe/Unsubscribe http://www.endurance.net/ridecamp/logon.asp Ride Long and Ride Safe!! =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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