Ask the Nutritionist: Dr. Getty's Forum for Equine Nutrition
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Dr. Getty
Hi Lynn,
Sounds like you have a very good plan. If you feed Glanzen Complete according to directions (1 scoop per 400 lbs of body weight), then you won't need to also add Nutra Flax, since Glanzen Complete is flaxseed meal based.
Yes, be sure to give them as much grass hay as they want and add some alfalfa to the mix, to ensure high quality protein. This is an important addition and alfalfa is not at all high in sugar, as is commonly thought. Free choice grass hay, plus 30% alfalfa, will keep their weight good and their digestive systems healthy. Even overweight horses need hay free-choice, otherwise they stay overweight. When given all they want, they will self-regulate and eat only what their body's need.
Quiessence is helpful if you feel that they are insulin resistant. Most horses do not get enough magnesium, so a maintenance dose of 1 scoop per 500 lbs is appropriate. If you want to add more for insulin resistance, the added alfalfa will ensure enough calcium to provide more calcium than magnesium.
Keep up the fine work!
Dr. Getty 
We have two quarter horses, a gelding approximately 14 and a mare who is approximately 19 years old. They are currently getting Poulin Carb Safe (the mare has had a few bouts with laminitis-our first time & most severe was a couple of years ago was caused by poor farrier work. Anyway, I was considering going to start them on Quiessence (they are both light in weight and would like just a little more on them for the winter months), Nutraflax and Glanzen Complete and switching to unsweetened beet pulp. They are given two servings of hay per day (would like to start giving them as much hay as they want). No pasture and very little if any riding at this time. Of course they have fresh water everyday as well. I am trying to do what is best for them but also keep cost down. Is there anything else I should be doing or should I continue with the current grain? Any assistance would be greatly appreciated. Thank you,Lynn
Where are you from? Bayfield, CO