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A healthy foal will grow rapidly, gaining in height, weight and strength almost before your very eyes. From birth to age two, a young horse will achieve 30 percent or more of its full adult size, sometimes putting on as many as 3 pounds per day. Generics and environment play significant roles in determining individual growth patterns. Through research, we also know we can influence a foal's growth and development - for better or worse - by the nutrition we supply.
STRIVE FOR BALANCE
Feeding young horses is a careful balancing act. The interplay between generics, management and nutrition is complex. While we can do nothing to change the genetic road map, we can alter its course via proper management.
The nutritional start a foal gets can have a profound effect on its health and soundness for the rest of its life. We can accelerate growth if we choose. However, research suggests that a balanced dietary approach which supports moderate growth is less likely to cause developmental problems.
THE NURSING FOAL
One of the foal's first missions in life is to stand and nurse. In doing so, it receives the antibody-rich colostrum which helps protect it from disease. During the first weeks of life, the mate's milk provides everything a rapidly growing foal needs for sustenance. The burden then gradually shifts to other sources. During lactation, a mare will produce an average of 3 gallons of milk a day. But in order to do so she must receive ample feed and water.
Observe the foal's nursing habits. If it suckles for more than 30 minutes at a time, it may not be receiving enough milk. Supplemental feed or milk replacer may be required.
Peak lactation generally occurs during the second and third month of a foal's life. At this time a mare will need almost double the amount of feed she required during her early pregnancy In addition to extra energy, her diet must include adequate protein, vitamins and minerals to keep from depleting her own body reserves. Increases or decreases in feed should be made gradually over a 7 to 10-day period.
THE FOAL'S CHANGING DIET
As early as 10-14 days of age, a foal may begin to show an interest in feed. By nibbling and sampling, the youngster learns to ear solid food. Its digestive system quickly adapts to the dietary changes.
At 8-10 weeks of age, mare's milk alone may not adequately meet the foal's nutritional needs. High quality grains and forage should be added to the foal's diet. It is essential the ration be properly balanced for vitamins and minerals. Deficits, excesses or imbalances of calcium, phosphorous, copper, zinc, selenium and vitamin E are of particular concern in the growing foal. Improper amounts or ratios can lead to skeletal problems.
FOAL FEEDING GUIDELINES
As the foal's dietary requirements shift from milk to feed and forage, your role in providing the proper nutrition gains in importance. Here are some guidelines to help you meet the young horse's needs:
Foals are commonly weaned at 5 to 6 months of age. Beginning about the third month, the mare's milk supply gradually declines and a natural weaning process begins.
To prepare the foal for complete weaning, its ration should be increased over a 2-3 week period to make up for the nutrients being lost in the diminishing milk supply. The mare's grain should be reduced and/or gradually eliminated to further limit milk production.
Once it is no longer nursing, a 500-600 pound weanling should be eating approximately 2.5% of its body weight in feed and forage a day.
Weanlings and yearlings continue to build bone, muscle and mass at a remarkable rate. From weaning to two years of age, the horse may nearly double its weight again.
Weanlings and yearlings benefit from a diet containing 14-16 percent protein. They also require readily available sources of energy to meet the demands of growth and activity.
A good rule of thumb is to provide 60-70 percent of the ration as concentrates and 30-40 percent of the ration as roughage-measured by weight. The diet must also provide ample fiber to keep the digestive tract functioning properly. Some of the new "complete feeds" have the ration already balanced.
Weight gain and development taper off as the horse matures. As growth slows, you will need to adjust the ration to approximately 1.5-2% of the yearling's body weight. The grain to roughage ratio should also be adjusted so by the time the horse is a 2-year-old, half of its daily diet (by weight) is coming from grain sources and the other half from hay and pasture. Breed type, maturity and level of activity will affect the horse's exact nutritional requirements.
TOTAL CARE & MANAGEMENT
Work with your equine practitioner to develop a total health care plan for your foals, weanlings and yearlings. A regular deworming, vaccination and examination schedule is essential to ensure your feat is getting the care it needs. Remember, vaccination and deworming regimens may vary depending on regional factors and disease risks. Consult your equine practitioner for exact recommendations.
Here are some other management tips:
This brochure was developed by the American Association of Equine Practitioners through a grant from Bayer Corporation. Bayer Corporation, Agriculture Division, Animal Health, Shawnee Mission, Kansas 66201.