[QUOTE=Calamber;7686198]
OP, I sent you a pm about the copper deficiency and what I did for a very bad sweet itch case but I found a website that has a little more info. Second link is most interesting re: iron deficiency as a result of copper deficiency. Get the horse’s blood tested.
http://forageplus.co.uk/sweet-itch-and-how-forageplus-minerals-can-help/
http://horseandponydirect.com/2012/04/how-copper-and-zinc-affect-a-horses-coat/[/QUOTE]
^^^this, this, and this. My 28 yr old Arab has dealt with chronic sweet itch the entire 21 years I have owned him. Until this summer.
This summer his sweet itch is 95% under control, he’s not had any rain rot, his reaction to tick bites went from swelling up like a candy easter egg to barely noticeable, I haven’t seen any reactions to Neck Threadworms.
I put him on a vit/min Lix tub when he comes in his stall at night.
It does not have added iron.
It does have:
220 ppm of copper per serving
750 ppm of zinc per serving
30,000 IU/lb of Vitamin A
I have never seen this Arab’s coat and skin look so clean. I know full well it is due to feeding him a supplement that is high in copper/zinc, Vitamin A and does NOT have added iron.
Iron depletes copper and zinc. Feed makers need to stop adding iron to everything they produce. Horses get enough iron naturally, in grass, hay and even some water, depending on the water source.
I should have that Arab’s entire belly line slathered in diaper rash cream clear back and including his belly button. He only has a few dots, an miracle for this horse.
He is also on a ration balancer that does not have added iron. While “Ferrous Carbonate” is listed, it’s nearly last on a long line of ingredients so the amount is minimal.