RE: Omega-3 Fatty Acids
Dale,
You need to be kinda careful which Oils you use. Most all regular cooking oils are very high in Omega-6 fatty acids. They are very PRO-inflammatory, where as Omega-3 fatty acids are very ANTI-inflammatory.
Even Canola oil (which is low in Omega-6), does have a fatty acid that is converted into a pro-inflammatory substance. Dog foods are already pretty high in Omega-6 (animal fat) and those foods that do have Omega-3 (fish oil) are carefully regulated to have a 5:1 ratio of O-6 to O-3. You'd be better off not supplementing with "whatever is on sale". Although it's not cheap, the dogs (I don't know abouthorses) would be better off if you'd spend a bit more and give them some Olive Oil -- or better yet, Fish Oil. Most of the older research has shown that the 5:1 ratio is best, but some of the newer research has shown that closer to 2:1 might be better.
I don't see any way that milk replacer can cause worms. Worms come from worms (or worm eggs etc). Unless the milk replacer is contaminated with worm eggs, it cannot cause worms. Puppies get worms (a lot and quite easily), it's just a fact of life --- milk replacer or not.
.