Purina® Omolene® #300 Growth Horse Feed

Purina® Omolene® #300 Growth Horse Feed

Support foals, weanlings, yearlings, and pregnant or lactating mares fed with foals with Purina® Omolene® 300 Mare & Foal horse feed. This wholesome nutrition feed supports pregnancy, lactation, and proper growth and is fortified with milk components to help support muscle growth & bone development. This feed is nutritionally balanced and has Outlast® technology to support gastric health and Amplify® high-fat nugget to support body condition, endurance and bloom. Feed with full confidence knowing only the best innovations proven in performance earn their place in Purina® Omolene® horse feeds.

Features & Benefits

Whole Grain Nutrition

Supports pregnancy, lactation and proper growth

Outlast® Gastric Support

Scientifically shown to support gastric health and comfort and proper pH even through the stress of travel and competition

Amplify® High-Fat Nugget

A proprietary blend of fatty acids from vegetable oils, flaxseed and rice bran that supports body condition, endurance and bloom

Muscle Growth & Bone Development

Fortified with milk components, including amino acids and polysaccharides found in mare’s milk

Lactation Nutrition

High-quality protein with balanced nutrients and calories to support milk production

Balanced Nutrition

Designed to be fed with hay and/or pasture, this formula provides 100% of the required vitamins and minerals when fed as directed.*
*When fed as directed, with free-choice or added salt, based on Nutrient Requirements of Horses. Sixth Revised Edition – 2007, published by the National Research Council


Min / Max
Crude Protein
16.00 %
0.90 %
6.00 %
Crude Fiber
7.00 %
Acid Detergent Fiber (ADF)
10.00 %
Neutral Detergent Fiber (NDF)
23.00 %
Calcium (Ca)
0.80 %
Calcium (Ca)
1.30 %
Phosphorus (P)
0.55 %
Copper (Cu)
60.00 PPM
Selenium (Se)
0.60 PPM
Zinc (Zn)
220.00 PPM
Vitamin A
3000 IU/LB
Vitamin E
125 IU/LB

Feeding Directions

FEEDING DIRECTIONS WITH HAY OR PASTURE: Start with the amounts of Omolene® 300 Mare & Foal given for the weight and lifestyle of the horse. After observing the horse for a period of time, the amount fed may be gradually increased or decreased to obtain the 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
| 800 1,000 1,200
Minimum Hay or Equivalent Pasture* 9.5 12.0 14.5
Omolene® 300 Horse Feed (lbs/day)**
Late Gestation                           4.0 5.25 6.25
Lactating Mare 8.0 9.5 11.0***
Weaned Foal Through Yearling Weight of Horse in Pounds
| 300 400 500 600 700
Omolene® 300 (fed with appropriate amounts of forage) 7.25-7.75 7.50-8.50 7.00-9.25 7.50-9.50 7.75-10.00

*This is the recommended minimum amount of hay to be fed. If feeding more hay, you may reduce the feeding rate of Omolene® 300 needed to maintain appropriate body condition.
** Do not feed less than 0.35 lbs/100 lbs body weight/day (3.5 lbs per 1000 lbs BW) or 0.75 lbs per 100 lbs of body weight per day for yearlings (3.75 lbs per 500-lb BW). If your horse gains too much weight at that minimum feeding rate, replace Omolene® 300 with Purina® ENRICH PLUS® Ration Balancing Horse Feed. 
*** Feeding rates of Omolene® 300 and forage may be adjusted or feed may be top-dressed with Purina® Amplify® High Fat Supplement for additional calories.
**** Use the lower feeding rate for moderate growth rate and the higher feeding rate to support more rapid growth.
SUCKLING FOALS: Begin offering feed within two weeks of birth. Feed 1.0 lb of Omolene® 300 horse feed per month of age per day.
700-LB WEANLINGS: Horses with expected mature weight of 1,000 lbs or greater may continue on Omolene® 300 or change to Purina® Omolene® 200 Performance horse feed.
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. 
  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 the 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.