Ask the Nutritionist: Dr. Getty's Forum for Equine Nutrition
Welcome to my forum.
Here you will find more than 6 years of questions and my answers. It is searchable and offers a great deal of information.
Currently, I am discontinuing new questions. This may change in the future, but in the meantime, please know that It has been a true pleasure serving you.
Take a look at my Nutrition Library and Tips of the Month for a variety of answers on selected topics. Be sure to sign up for my monthly e-newsletter, Forage for Thought.
I also have a growing number of recordings on "Teleseminars on Nutrition Topics that Concern You" as well as the new, Spotlight on Equine Nutrition Series -- printed versions of favorite teleseminars.
And finally, look for my articles in a variety of local publications and online newsletters, as well as the Horse Journal, where I am the Contributing Nutrition Editor.
All the best,
Dr. Getty
Hi 10Walker,
This is a very broad topic, indeed (perhaps the subject of my next book?!). Worms can come from the ground, the manure, feed, and ingestion of larvae from insects (such as the botfly, which a daily wormer will not cover). The more a horse is exposed to strange environments and other horses, the more likely he will be exposed to worms. However, they exist everywhere and protection is important for all horses, even if they never leave your property.
Some horse owners choose to have a manure sample tested every two or three months and this is worthwhile to do, even if your horse is on a daily wormer. However, a tapeworm infestation will not show up in a manure test and the only way to protect your horse is to administer praziquantel (or a larger dose of pyrantel pamoate) at least once each year.
All the best,
Dr. Getty 
Where are you from? Bayfield, CO