Originally Posted by hoopla
What makes you think that Dermatophilus congolensis is used by lack of vitamin A or that feeding it as a supplement kills or stops the organism?
I'm not addressing whatever invading organism is causing the problem. I'm after the integrity of the skin. If the skin is healthy it will provide a sufficient barrier to the fungi, bacterial and other infecting agents. Quality protein, Vits B, A and D was well as balanced minerals are important for the skin and hair. Vit A is what tends to fluctuate seasonally in the horse's diet. If the liver can store about a 3 month supply of Vit A, sounds reasonable that in about January you will start to see the results of any difficiencies. When do you see the lion's share of RR problems? Certainly not in the summer months when most people's weather (in the US) is hot and humid with the required thunderstorm in the evening. Conditions that are perfect for fungi and bacteria to grow. We tend to see most between January and April.
We can treat the horse all winterlong with topicals but as soon as we quit, we're right back where we started. We're spending alot of time and money trying to fix this when it doesn't have to.