Ultium Growth
Ultium Growth
Ultium Growth

Ultium Growth

Regular price $36.99 Unit price  per 

*Now with Outlast® Gastric Support Supplement*

Purina® Ultium® Growth Horse Formula was conceptualized after the Purina new product development team completed their successful launch of the original Ultium® Competition Horse Formula. The Ph.D. nutritionists at the Purina Equine Research Unit in Gray Summit, Missouri knew the advantages of feeding meticulously formulated, higher fat and fiber feeds to competitive athletes. But could the same principles be applied for young growing horses?

Since then, research spanning over four years was performed to develop a new feed formulated specifically for young growing athletes. Purina performed detailed scientific feeding trials on broodmares and young horses from multiple foal crops at varying ages, breeds and management situations. The research involved monitoring and measuring growth curves, body condition, joint health, activity levels, blood work and more to ensure optimal nutrient delivery to broodmares and growing horses.

The result was unique, industry-leading nutrition proven to support the development, growth and adaptive physiology necessary to produce a strong, healthy athletic horse. It’s another offering of advanced nutrition worthy of the Purina name. Purina® Ultium® Growth Horse Formula. It’s What It Takes®.


Ultium® Growth Horse Formula contains a concentrated calorie delivery system that supports the mare through all stages of gestation, with more total calories from added fat and fiber and lower sugar and starch. Lower feeding rates help support digestive health during this essential time.

Your foal’s best start begins with proper fetal development. Ultium® Growth Horse Formula provides research-determined amounts of nutrients, including copper and zinc for developing fetal liver stores to set the foundation for correct growth.

Suckling foals may nurse up to 80 times per day. Ultium® Growth Horse Formula provides additional milk components to support immune function, calorie, and nutrient transfers to active, growing foals.

Lactating mares can require over 35,000 kcal/day to produce adequate milk and maintain body condition. The concentrated calorie delivery system of Ultium® Growth Horse Formula provides the necessary calories during this critical period for both mare and foal sustenance.

Ultium® Growth Horse Formula helps support strong bone development by using high-quality nutrient sources. Amino acids, vitamins and minerals are supplied in optimal amounts and ratios as determined by research studies to provide the necessary building blocks for bone growth.

Young growing horses need carefully-balanced nutrition for optimal muscle development to grow into successful athletes. The protein quality and amino acid fortification of Ultium® Growth Horse Formula supports in the foundation, maturation and maintenance of healthy muscle.

Features & Benefits

Sustained Energy System®

Blend of fat, fermentable fiber and soluble carbohydrates provides steady energy for lactation and growth.

Targeted Nutrition Delivery System

Precise nutrient ratios support proper joint, bone and muscle development.

Backed by Years of Research

Including measuring growth curves, body condition, joint health, activity levels and blood work in young, growing horses.

Purina® Amplify® High-Fat Nugget

Proprietary blend of fatty acids from vegetable oils, flaxseed and rice bran maintain body condition in lactating mares and healthy bloom in growing horses.

Optimized Amino Acid Profile

Includes essential amino acids Lysine, Threonine and Methionine and branched chain amino acids to support muscle development and growth

Highly Digestible Fibers

Including beet pulp and soy hulls provide fermentable fiber to the hindgut for a slow-release calorie source that helps support weight maintenance and consistent lactation in broodmares and steady growth in young, growing horses.

Added Vitamins and Minerals

Including Copper, Zinc, Calcium and Phosphorus in essential ratios and quantities to help assure proper fetal stores during gestation, milk levels during lactation and tissue concentrations for continued growth.

Added Antioxidants

Including Vitamins E and Selenium help support cellular metabolism and a strong immune system.

Controlled Sugar and Starch

With higher levels of fat and digestible fiber may help reduce the risk of hindgut disturbances associated with high starch feeding practices.

Concentrate Feed

Designed to be fed with hay or pasture

Outlast® Gastric Support Supplement

Scientifically shown to support gastric health and comfort, proper pH and provides an optimal source of calcium for proper bone growth.


Min / Max
Crude Protein
15.50 %
1.00 %
0.48 %
0.55 %
Crude Fat
9.50 %
Omega-3 Fatty Acid
0.50 %
Omega-6 Fatty Acid
2.00 %
Crude Fiber
13.00 %
Acid Detergent Fiber (ADF)
16.00 %
Neutral Detergent Fiber (NDF)
28.00 %
15.00 %
8.00 %
Calcium (Ca)
1.40 %
Calcium (Ca)
1.90 %
Phosphorus (P)
0.70 %
Sodium (Na)
0.60 %
Magnesium (Mg)
0.35 %
1.25 %
Copper (Cu)
90.00 PPM
Selenium (Se)
0.60 PPM
Selenium (Se)
0.72 PPM
Zinc (Zn)
270.00 PPM
Vitamin A
3,400 IU/LB
Vitamin D3
800 IU/LB
Vitamin E
150 IU/LB
Wheat Middlings, Dehulled Soybean Meal, Ground Corn, Sun Cured Alfalfa, Ground Soybean Hulls, Heat Stabilized Rice Bran, Dried Plain Beet Pulp, Cane Molasses, Vegetable Oil, Calcium Carbonate, Flaxseed, Soybean Oil, Lignin Sulfonate, Seaweed-Derived Calcium, Magnesium Oxide, Salt, Monocalcium Phosphate, Dicalcium Phosphate, L-Lysine, DL-Methionine, Citric Acid, Dried Whey Solubles, Choline Chloride, Colored with Iron Oxide, Vitamin E Supplement, Thiamine Mononitrate, Propionic Acid (a Preservative), Copper Sulfate, Zinc Oxide, Iron Oxide, Vitamin A Supplement, Citric Acid (a Preservative), Calcium Pantothenate, Pyridoxine Hydrochloride, L-Lysine Monohydrochloride, Natural Flavor, Artificial Flavors, Ferrous Carbonate, Vitamin D3 Supplement, Manganous Oxide, Tocopherols, Riboflavin Supplement, Vitamin B12 Supplement, Rosemary Extract, Lecithin, Niacin Supplement, Riboflavin-5-Phosphate, Calcium Iodate, L-Threonine, L-Tryptophan, Cobalt Carbonate, Sodium Selenite. Soy Hulls 8%

Feeding Directions

Start with the amounts of Ultium® Growth Horse Formula given for the weight and life stage of the horse. After observing the horse for a period of time, the amount fed may be gradually increased or decreased to obtain desired body condition and weight. For feeding directions outside the ranges addressed in these feeding charts, please contact your local Purina retailer or Purina Customer Service at 800-227-8941.

Weight of Horse in Pounds
BROODMARES 800 1,000 1,200 1,400
Minimum Hay or Equivalent Pasture* 9.50 12.00 14.50 17.00
Ultium® Growth Horse Formula** (lbs/day)
Gestating Mare (last 90 days) 4.25 5.25 6.0 7.0
Lactating Mare*** 6.0 7.50 9.00 10.50
Weight of Horse in Pounds
GROWING HORSES 400 500 600 700 800 900 1,000
Minimum Hay or Equivalent Pasture* 4.00 6.00 7.00 8.50 9.50 11.00 12.00
Ultium® Growth Horse Formula** (lbs/day)
Weanlings, Yearlings, and 2 Year Olds 7.00-7.75 6.25-8.35 6.75-9.00 7.00-9.00 7.25-9.00 7.00-8.75 6.75-8.50

* This is the recommended minimum amount of hay to be fed. If feeding more hay, you may reduce the feeding rate of Ultium® Growth Horse Formula to maintain appropriate body condition.
** To meet nutrient requirements, do not feed less than 0.35 lbs. per 100 lbs. bodyweight (BW) per day (3.5 lbs. per 1,000 lbs. BW) for gestating mares, 0.50 lbs. per 100 lbs. BW for lactating mares or 0.75 lbs. per 100 lbs. BW per day for growing horses (3.75 lbs. per 500-lb. BW). If your horse gains too much weight at the minimum feeding rate, transition to Purina® Enrich Plus® Ration Balancing Feed.
*** Recommended minimum amount of hay to be fed to lactating mares is 2 lbs. per 100 lbs. BW per day (20 lbs. per 1,000 lbs. BW).
**** Use the lower feeding rate for moderate growth rate and the higher feeding rate to support more rapid growth.
NOTE: Feeding rates of Ultium® Growth Horse Formula and forage may be adjusted or feed may be top-dressed with Purina® Amplify® High-Fat Supplement for additional calories.
SUCKLING FOALS: Begin offering feed within two weeks of birth. Feed 1.0 lb. of Ultium® Growth Horse Formula per month of age per day.

A 4-pound meal of Ultium® Growth Horse Formula supplies a full serving of Outlast® Supplement.
Follow label directions. Feeding added selenium resulting in total diet levels in excess of 0.3 ppm is prohibited.
  1. Feeding rates will vary with size, age, temperament, health status, forage quality, climate and activity level. Feed at regular times, at least twice daily. Do not feed more than 0.5 lbs/100 lbs of body weight per meal. Do not feed free-choice. Prevent rapid eating by the horse of any feedstuff.
  2. Reduce and/or delay feeding a horse which is hot, excited or showing pain, has fever or diarrhea. Consult your veterinarian if any problems arise.
  3. Always feed a minimum of 1.0 to 1.2 lbs per 100 lbs of body weight of good quality clean hay or the equivalent in pasture.
  4. Any feed changes should be made gradually over a period of 7 to 10 days. Changes in the rate of feeding should not exceed 1.0 lb per day for each horse.
  5. Provide fresh, clean water at all times. Provide your horse with access to salt. Consult with your veterinarian regularly and maintain a routine dental, parasite control and health care program for your horse.
Ultium Growth