Feeding your OTT during Spring and Summer

By Pryde’s EasiFeed, written by Bethanie Clark BAnVetBioSc (Hons I)

When the seasons change, it is important that as horse owners we monitor changes in pasture quality and quantity and manage our horses feed appropriately.  As pasture availability increases in spring and summer, generally an automatic response of owners is to decrease the amount of hay and supplementary feed being fed. While this is the right response to manage a horse’s weight and body condition, ensuring horses are obtaining all the nutrients they require through the changes of season is not as simple as increasing or decreasing the amount of hay or feed in their diet. This article will cover how you can correctly adjust your horse’s diet through the changes of season without compromising on any nutrients they require.


Dietary carbohydrates are the major source of energy within horse’s diets, providing majority of the fuel for everyday maintenance and functioning of the body, as well as the fuel required for exercise. When the amount and quality of pasture increases in seasons of high rainfall, the amount of energy that horses are able obtain from pasture alone increases drastically and can be enough to sustain a lactating mare, a growing horse, or a high-level performance horse; let alone a horse at maintenance or in light work. Due to this, it is not uncommon to see horses begin to put on excess weight or exhibit hot and fizzy behaviour when ridden. If this is the case for your horse, reducing and managing digestible energy intake will be necessary. While decreasing energy intake can be as simple as reducing or removing supplementary feed when more pasture is available, it is not as simple as this when it comes to ensuring the correct essential amino acid (through protein), mineral and vitamin intake.


Protein is a major component of most tissues within the body, second only to water. A horse at maintenance on good quality pasture will likely obtain enough protein in their diet from pasture alone. While a lactating mare or high-performance horse with higher requirements of protein, specifically essential amino acids such as lysine, are likely to not obtain this from good quality pasture alone. While pasture may provide enough energy to maintain weight, lactation, and energy for performance without the provision of supplementary feed, essential amino acid intake may be lacking.

Vitamins and Minerals:

While vitamins and minerals comprise only a minor part of the diet by weight, they play a major role in the overall health of horses. When pasture is abundant and supplementary feed is reduced or removed, in almost every case a deficiency of minerals will appear. In Australia the most common minerals lacking in pasture are copper, zinc and iodine and these deficiencies will arise even for horses at maintenance. For horses with higher requirements of minerals and vitamins such as lactating mares, growing horses and horses in work often calcium, phosphorus, selenium, and vitamin B1 will also be deficient.

Balancing energy intake while ensuring adequate nutrient intake

Quality supplementary ‘full’ feeds are fortified with essential amino acids, minerals, and vitamins and when fed at the recommended feeding rates, each of these requirements are often met. In dry periods when horses are on poor pasture often supplementary feed needs to be fed to meet digestible energy requirements. For example, here is a diet of a horse in moderate work, who through a dry period was on low quality pasture, supplemented with lucerne hay and 3.2kg of EasiResponse. The 3.2kg of EasiResponse is required to meet the energy requirements for performance, that is not being provided by pasture and is also working to meet vitamin and mineral requirements.

When pasture quality improves, if the same amount of hay and supplementary feed is provided this will result in excessive weight gain and likely too much energy when ridden. In response to an increased amount of pasture hay can be removed and the amount of EasiResponse decreased to 1kg. While this effectively reduces digestible energy intake, it leaves the diet deficient in copper, selenium, and iodine.

While the amount of EasiResponse could be increased to meet these requirements, the use of Pryde’s Sliding Scale is an ideal option. The Pryde’s Balancer Range is designed specifically to meet horses’ requirements through the changing of seasons. For the horse in moderate work, as the amount of a full feed such as the EasiResponse is reduced due to increased pasture availability, a balancer pellet can be introduced to fill the nutrient gaps that this creates. Here’s the same diet, with 500g of the Essentials 150 introduced.

The introduction of the Essentials 150, ensures that the minerals that were deficient are now being met, notice also that the use of this doesn’t increase digestible energy intake. In the case where pasture quality improves further, the EasiResponse could be completely removed, and the Essentials 150 used alone. Below is an example of how the two can work together to moderate energy intake with changing pasture quality, while meeting all nutrient requirements, for a 500kg horse in moderate work:

Pasture QualityPoorAverageGoodExcellent
Essentials 1500kg0kg0.5kg0.8kg

To take the guess work of balancing energy intake with vitamin and mineral intake, each of the Pryde’s full feeds have a ‘Keep it Balanced’ section, which can be found on the back of the bags or on the website. This provides you with the recommended amount of a balancer pellet to add into your horse’s diet for every 1kg under the recommended feeding rate being fed. There are a range of balancer pellets available, depending on your horse’s individual requirements.

While it may seem overwhelming at first to ensure your horse is obtaining all their nutrient requirements while moderating their energy intake especially when there is abundant pasture; the range of Pryde’s products are carefully formulated to ensure these requirements are met to give you peace of mind and to take the guess work out of feeding. If you would like to know more about how the Pryde’s products work together to promote optimal health and performance in your horse, please get in contact or use our free feed selector.

Latest Horses

Team Thoroughbred Newsletter

Subscribe to Redzel’s Roundup, the Team Thoroughbred e-newsletter, and be the first to know about our special events and activities, receive important information from our equine welfare veterinarians, read good news stories, go into the draw for Team Thoroughbred giveaways and most importantly be part of a passionate community of Thoroughbred lovers!

* indicates required