Purina Ultium Growth Horse Formula

Purina® Ultium® Growth Horse Formula

Scientifically formulated high-fat, high-fiber feed that supports the development and physiology necessary to produce a strong, healthy, athletic horse.

Formulated for broodmares and young growing horses.

Features & Benefits

Sustained Energy System®

A unique blend of three fuel sources to provide a steady level of highly digestible energy for developing and growing foals: soluble carbohydrates, fats and fermentable fiber

Targeted Nutrition Delivery System

Transports repair nutrients where they’re needed most. The balance of nutrients supports proper joint and long bone maturity to set the stage for the young athlete to start off right and continue on the correct path to competition.

Backed by Over Four 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

A proprietary blend of vegetable oils, flax seed and rice bran helps promote balanced immunity, smooth growth rates and shiny coats

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

Nutrient-Dense Blend

With Pellets and Purina® Amplify® High-Fat Nuggets is highly palatable and highly digestible for young horses and broodmares

Concentrate Feed

Designed to be fed with hay or pasture


Min / Max
Crude Protein
15.5 %
1 %
Crude Fat
9.5 %
Crude Fiber
13 %
Calcium (Ca)
1.40 %
Calcium (Ca)
1.90 %
Phosphorus (P)
0.70 %
Copper (Cu)
90 PPM
Selenium (Se)
0.60 PPM
Zinc (Zn)
270 PPM
Vitamin A
3400 IU/LB
Vitamin D3
Vitamin E
150 IU/LB
0 %
Sodium (Na)
0.10 %
Sodium (Na)
0.60 %
Selenium (Se)
0.60 PPM
Selenium (Se)
0.61 PPM
15.00 %
8.00 %

Feeding Directions


Feeding directions with hay or pasture. Start with the amounts given for the weight and lifestyle of the horse. After observing the horse for a period of time, the amount fed may be increased or decreased by 10% to obtain the desired body condition and weight.

BROODMARESWeight of Horse in Pounds
Minimum Hay or Equivalent Pasture*7.009.5012.0014.5017.00
Ultium® Growth Horse Formula (lbs/day)**
Gestating Mare (last 90 days)
Lactating Mare**
GROWING HORSESWeight of Horse in Pounds
Minimum Hay or Equivalent Pasture*
Ultium® Growth Horse Formula (lbs/day)***
Growing Horses, Weanlings and 2-year-olds***6.50-7.507.00-7.756.25-8.356.75-9.007.00-9.007.25-9.007.00-8.756.75-8.50

*These recommendations are based on the mare or growing horse eating the minimum recommended amount of hay per day (1.2 lbs per 100 lbs of body weight for mature horses, 1.0 lb per 100 lbs body weight for 300 to 400 lb weanlings, or 1.2 lbs per 100 lbs body weight for 500 to 1,000 lb growing horses. If feeding more hay reduce the amount of Ultium®  Growth Horse by 1.0lb for every 2 lbs of additional hay fed.

**Do not feed less than 0.45 pounds of Ultium® Growth Horse Formula per 100 pounds of body weight per day for lactating mares. For growing horses weighing over 700 pounds, do not feed less than 0.65 pounds per 100 pounds body weight. If your horse gains too much weight at that minimum feeding rate, then you should replace Ultium® Growth Horse Formula with Purina Enrich Plus ration balancing feed, and feed according to feeding directions.

***Adjust amount fed to achieve desired growth rates.  Feed amounts from lower end of range for more moderate growth rate and amounts from upper end of range for more rapid growth rate. For growing horses in training, adjust feeding rate to maintain body condition according to level of work, making any changes in feed gradually.

For horses sensitive to dietary carbohydrates, please consult with a veterinarian or nutritionist for a recommended diet.

Best Results
  • Feeding rates will vary with size, age, temperament, health status, forage quality,climate and activity level. Feed at regular times – at least twice daily – with three daily feedings preferred. Let horses feed in a natural position from troughs with large bottoms, placed at normal head height or lower. Do not feed free-choice. Prevent the rapid eating by the horse of any feedstuff.
  • 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.
  • 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.
  • 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.
  • Have plenty of clean, fresh water available at all times. Provide your horse with access to salt. Maintain an effective control program for internal parasites. Have the horse’s teeth examined annually and consult your veterinarian on a regular basis.
Changing To
  • Make the feed change gradually over a period of 7 to 10 days.
  • Mix the new feed with the old, gradually increasing the amount of the new feed while decreasing an equal amount of the old.
  • Changes in the rate of feeding should not exceed 1 pound per day for each horse.
Store in a dry, well-ventilated area protected from rodents and insects. Do not feed moldy or insect-infested feed to animals as it may cause illness, performance loss or death. Feeding added selenium resulting in total diet levels in excess of 0.3 ppm is prohibited.