Well...I've been reading whatever I can get my hands on regarding this topic.
Localized Muscle Acidosis= Work instensity exceeds level of fitness.
Post Exercise Muscle Fatigue= Exertional myopathy caused by fluid and electrolyte imbalances.
Stress Tetany= Calcium Depletion from the stresses of long hauling etc.
Other related factors:
Feed not adjusted for non-work, or reduced work days. The wrong kind of feed (ie. endurance horses need protein at 8-10% max, fats at 10%, grass hay, and super fibers.
Selenium depletion in distance horses. It is my understanding that we live in a Selenium poor area of the country. Many distance horses have to be supplemented with Selenium. The recommendation is to find a yeast based Selenium supplement. Selenium can also poison the horse if the level is too high...now that is scary!!!
Vitamin E is known to pay an important role preventing tye-up due to the antioxident properties of Vitamin E.
Heat cycles in nervous mares and fillies. Unfortunately the recommendation for this is to give the horse a light dose of a sedative (acetyl-promanzine) during training. This is a banned substance I'm quite sure.
As you can see by reading this, Phebes was hitting about all of them. Any one of these factors could have done it. But several I know for sure.
Did not cut feed ration the week prior that I let her have off.
Ran faster than she needed to go.
The Selenium I don't know yet, and I'm definitely going to supplement vitamin E in the future. I think the feed I'm giving her pretty well matches the recommended feed as closely as I can get it, I'm feeding a super fiber (beet pulp without molasses), and mostly grass hay.
Discipline: LD/Endurance, CMO, Trail Rider, Cartoonist, Writer, Co-Director/ Green Bean Endurance
Favorite Links for training, gear, and memberships!
- National Association of Competitive Mounted Orienteering
- HOW TO CMO
- What is CMO?
- Old Dominion Endurance Rides
- Renegade Hoof Boots
- Riding vs. Racing a discussion with the Duck.
- Trumbull Mountain's INTRO TO ENDURANCE RIDING
- Principles of Conditioning
- Conditioning the endurance horse by SERA
- Short Article: Feeding & Training the Endurance Horse
- Feeding the Endurance Horse, Swedish Author
- Preventing Dehydration In the Endurance Horse, Ontario Competitive Trail Riding Association
- Jim Holland's fantastic training links here!
- South Eastern Distance Rider's Association