Small Changes in Hay Have a Big Impact on Your Horse

102_2349 (Small)You just received a new load of hay in to your barn. It smells so good, and looks just like the last load you got from your regular supplier. But is it really the same? While it might be similar, growing and harvesting conditions vary with every single cutting, and that can have an impact on the nutrition contained in that sweet-smelling pile of bales in front of you.

Generally speaking, the differences aren’t going to be very big – but the next time your horse mysteriously starts losing weight, or losing muscle condition over his topline, you might want to question your hay supplier or get your hay tested.

For example – if your hay got rained on after it was cut, the rain can shatter the leaves, which is where much of the highly digestible protein is found in your hay.  And given how much of your horse’s daily diet is made up of hay, a small decrease in protein can have a big impact.  Let’s take a look at the math behind this:

A 1000 lb horse should eat 1.5-2.0% of its body weight per day in forage – that’s 15-20 lbs!

  • Hay A has 10% protein: 20 lbs of hay x 0.10 protein = 2 lbs of protein intake per day
  • Hay B has 8% protein: 20 lbs of hay x 0.08 protein = 1.6 lbs of protein intake per day

In this scenario, you’d have to feed an extra 5 lbs of Hay B per day to be feeding the same total protein as Hay A provides!

But how much difference does this really make, you ask? If your horse’s intake is already on the low end of protein requirements for his size and activity level, then a 2% drop in hay protein would potentially show up in 2 to 6 weeks. Over that time, all else being consistent, a decrease in general muscle tone, and muscling over the topline, will start to appear. Fortunately, it’s pretty easy to combat – in many cases, simply tossing in an extra flake or two of hay per day, or adding a ration balancer or 1 – 2 lbs of grain per day, at feeding time will combat the decreases – and what horse won’t love you for that?

Determining the Value of Rained-On Hay

George eating hay in his paddockRain occurring while cut hay is laying in the field causes both yield and quality losses that reduce the value of the crop as an animal feed and a marketable commodity.

Weather-induced losses are caused by:

  1. Prolonged plant respiration reducing soluble carbohydrates and overall energy content
  2. Leaching of soluble carbohydrates, protein, and certain minerals from the hay
  3. Leaf shattering and loss, removing the highly digestible and high protein portion of the forage
  4. Microbial activity metabolizing soluble carbohydrates and reducing energy content
  5. Color bleaching

How much does rainfall reduce dry matter yield?

Several researchers have studied the effects of rainfall on cut alfalfa. Wisconsin researchers measured dry matter losses of 22% when alfalfa was exposed to 1 inch of rain after 1 day of drying (curing). Similar hay dried without rain damage lost only 6.3% of the initial yield. Losses appear to be greatest after partial drying of the forage has occurred. In this same study, alfalfa exposed to 1.6 inches of rain over several days suffered a 44% loss in dry matter. Michigan researchers conducted several different studies to examine the effects of rainfall on field cured alfalfa. The first study reported maximum dry matter losses of 34%. In a second study, rainfall intensity was kept constant at about 0.7 inches but spread over periods of 1 to 7 hours. Dry matter losses ranged from 4 to 13%, with highest losses occurring when the rain was spread over a longer duration. Overall, dry matter losses were much lower in these experiments even though rainfall amounts were about 2 inches.

Other species have been studies as well. Yields losses of birdsfoot trefoil appear to be less than alfalfa, while red clover shows even less dry matter loss due to rain, and grasses suffer the least amount of dry matter losses. Dry matter losses are most crucial to the person responsible for baling the hay. Dry matter losses usually represent a significant decrease in income since less hay is available for baling, feeding, and selling.

How does rainfall reduce dry matter yield?

Three primary factors are involved in dry matter losses; leaching, respiration, and leaf loss. Leaching is the movement of cell solubles out of the plant. Components of the plant that are very water soluble are leached out of the forage and lost when rain occurs. Unfortunately, most of these compounds are those highly digested by the animal. They include such components as readily available carbohydrates and soluble nitrogen, minerals, and lipids. About one-half of the dry matter leached by rain is soluble carbohydrates.

Unlike other livestock, losses of soluble carbohydrate can be beneficial for some horses. Laminitis is a painful and debilitating disease of the horse hoof. Laminitis typically occurs during periods of increased or rapid intake of water soluble and nonstructural carbohydrates. In order to manage lamintic horses and reduced amounts of carbohydrates in harvested forage, horse owners have resorted to soaking hay. A number of research trials have confirmed removal of carbohydrates from hay by soaking in either 30 minutes of warm or 60 minutes in cold tap water. Soaking hay is a cumbersome, messy, and time consuming process. Purchasing rained-on hay with naturally low levels of carbohydrates is a possible alternative.

Respiration (breakdown of soluble carbohydrates by plant enzymes) occurs at nearly 2% dry matter per hour in fresh forage, and declines almost in proportion to the decrease in moisture content until the plant reaches approximately 60% moisture. Every time the forage is wetted by rain, respiration is either prolonged or begins again in cases where the cured forage was below 60% moisture. In either case, additional dry matter is lost.

There is some disagreement in the research literature regarding the amount of leaf loss that occurs in cut alfalfa as a direct result of rainfall. In Wisconsin studies, leaf loss ranged from 8 to greater than 20% as a percent of the initial forage dry matter when rainfall amounts were from 1 to 2.5 inches. In Michigan studies, direct leaf loss was much lower (0.5 to 4.2%). Perhaps the issue of leaf loss from rainfall is a mute point. Experience and common sense tell us that rain damaged alfalfa is more predisposed to leaf shatter after it dries, and rainfall often means additional raking and more lost leaves.

How does rainfall intensity and forage moisture affect losses?

Research is conclusive on these two points. Given the same amount of total rainfall, a low intensity rain will result in more leaching of soluble compounds than a high intensity rain. Also, as forage moisture content declines, it is more prone to dry matter loss from rain. In Wisconsin rainfall studies, the maximum loss in dry matter (54%) was a treatment where 2.5 inches of rain fell on hay that was nearly dried.

How does rainfall affect forage quality?

Perhaps nothing is more frustrating than to see excellent quality alfalfa turn into unsuitable feed with each passing rain and subsequent raking. Most rainfall studies are in agreement that wetting of field dried alfalfa has little impact on protein concentration. For rained-on hay, it is common to see relatively high protein values in comparison to fiber concentrations, unless significant leaf loss occurs. With the leaching of soluble carbohydrates, structural fibers (acid and neutral detergent fibers) comprise a greater percent of the forage dry matter. Depending on numerous factors, the digestibility of rained-on hay may decline from 6 to 40%. Changes in fiber components are thought to occur by indirect mechanisms, where the respiratory activity of microorganisms has a concentrating effect on fiber components by oxidizing carbohydrate components; additional fiber is not made during the wetting process.

Conclusion

Rained on hay can be a suitable forage, but quality depends on several factors. Forage quality tends to be retained if rain occurs soon after cutting when the forage has had minimal time to dry; the rainfall was a single event compared to a multiple day or drawn-out event; rainfall intensity was higher versus a longer, lower intensity event; and the forage has not been re-wetter numerous times. Rained on hay is actually beneficial for horses prone to laminitis and other metabolic disorders because of its reduced carbohydrate content. Analyzing forage for nutrient content is recommended, but can be especially useful when determining the quality of rained on hay.

This article is reprinted with permission from Dan Undersander, University of Wisconsin and Krishona Martinson, University of Minnesota. This and other horse nutrition articles can be found at http://www.extension.umn.edu/agriculture/horse/nutrition/.

Manage Pasture to Help Control Horse Feed Costs

Widgy in Grass_BRManaging pasture can be a very important tool in controlling feeding cost for all livestock, particularly horses being kept on small acreages.  If pasture is going to provide a substantial amount of the required nutrition for a horse, it takes about 2-3 acres per 1100 pound adult horse.

There are a number of key steps in managing pastures, particularly small acreages

  1. Do not turn the animals out on pasture too early in the spring.  Forages need some growth to recover from the winter and allow root systems to develop.
    1. Do not turn animals out on tall cool season grasses such as brome grass and orchard grass until the plants are 8-10 inches tall.
    2. If pastures are short cool season grasses such as Kentucky blue grass or rye grass, the plants should be 6-8 inches tall before grazing.
    3. If you do not know your pasture composition, err on the side of allowing adequate growth before grazing.
  2. Remove animals from the pasture when plants are grazed down to 3-4 inches in height.  Grazing too early or too long and allowing animals to eat the grass off too close to the ground will kill the grass and turn the pasture into a dirt lot where the only green plants are weeds, requiring expensive renovation.
  3. If you have limited acreage, consider purchasing some temporary fencing so that you can rotate the pasture.
    1. The outer fencing should be a safe, permanent fencing.
    2. You can cross fence the pastures with temporary fencing such as capped steel posts and appropriate electric wire.
    3. By allowing the animals to graze one section, then moving them to another section to allow the first section to recover, total pasture yield can be increased substantially, helping to control total feed costs.
    4. Clip and drag the pastures after you pull the animals off to control weeds and control parasites and flies.
  4. Make certain that fresh clean water is available at all times and that salt is available at all times.  If you are not feeding a balanced horse feed or ration balancer, offer appropriate mineral free choice as well.
  5. If space is very limited, keep a dry lot area where animals can be fed and watered to prevent areas of pasture from being overgrazed.
  6. Check with your local extension team for additional recommendations for your area and for recommendations on fertilizing pastures.  Dr. Krishona Martinson at the University of Minnesota, St. Paul, MN has published some excellent guidelines for pasture management.

A small investment in supplies to allow pasture to be managed and rotated can pay for itself in higher pasture yields.  Managing the pastures and selecting the right feeds can help manage total yearly costs as well as improve animal health and condition.

Spring Pasture Time for Horses!

Toby GrazingIntroducing horses to growing pasture is a welcome event each year, yet must be approached with caution. Introducing the horses to pasture too soon in the season or for too long a time period can be bad for both the pasture and the horses.

The following are some guidelines to consider:

  1. Do not turn the horses out on pastures too early. Grass needs time to recover from the stress of winter and should be allowed to re-grow to 6 to 8 inches in height, depending on the species, to allow roots to grow and to store some energy before being grazed.
  2. Horses should be fed hay before going out on pasture the first time. Do not turn them out with empty stomachs!
    1. Initial grazing should be limited to 15 to 20 minutes and gradually increased each day by 15 minutes until the horses are out for about 4 or 5 hours, at which time they can be allowed unrestricted time.
    2. If horses are allowed too much initial grazing time, the risk of digestive disturbance is increased as it takes the microflora in the gut some time to adjust to the difference in forage source.
  3. Do NOT overgraze! Pastures should not be grazed to below 3-4 inches in grass length or you will wind up with a dirt lot fairly quickly. Some weeds are also hardier than most grasses, so if pastures are over grazed, weeds will become more prevalent.
  4. Remember that cool season grasses growing very rapidly can be high in plant sugars (fructans), so caution is in order.
  5. Grazing muzzles might be an option for helping reduce rapid intake.

Proper introduction of horses back on pasture needs to be managed for the health of the horses and the health of the pastures!

Replacing Hay with Complete Horse Feed

A large boarding barn asked me to stop out and review their feed program as they were going to be making a change. The farm has over 100 horses in their care, and wanted to review the proposed change prior to placing their order.

They were currently feeding an economy pellet with an average feed rate of 6 pounds per horse per day. The new product the owner was considering is a mid range product that contains added fortification, as well as biotin and yeast culture. This would be a great enhancement to their current feed program, especially since their forage was not the best this year.

As I visited with the farm owner he explained that he was running dangerously low on his hay supply. He had priced hay from various sources, but the costs were excessive. He felt that if he transitioned the farm to a complete feed product, he could reduce his hay feeding rate by 50% per horse, and just use the complete feed.

He stated that even though the product was more expensive per ton than his current feed, but he would be saving money by feeding just the 6 pounds of complete feed per day. It was at that point that I realized he had not read the recommended feed rates for the product he was considering.

I agreed with the owner that complete feeds are an excellent choice to help balance a diet when forage is not readily available, or horses have a problem eating hay. I then went on to explain that he could reduce his hay feeding rate by 50% per horse per day, but he would need to compensate for the difference with additional complete feed beyond the 6 pound level of his traditional grain source.

Moral of the story: Complete feed products are great for horses with limited or no hay diets, but be sure you are following the recommended feed rates listed on the tag!

Stretching Your Horse Hay Supply

This article is courtesy of Krishona Martinson, PhD, University of Minnesota.

Most horse owners have noticed that the price of feed (both hay and grain) has increased.  At a hay auction in Sauke Center, MN, the 10-year average for horse quality hay (101-125 relative feed value) is $100 a ton; however, this year (2013), that same hay is averaging $220/ton.  There are several key factors that have contributed to these increases, including extreme weather patterns (i.e. drought), high oil prices, currency fluctuations, a struggling economy, and a market that makes growing corn and soybeans more profitable and less risky compared to hay.     

Horses have evolved on diets composed entirely of forage. Therefore, forage should be the primary component of a horse’s diet (at least 2/3 of their diet). Thus, horse owners, unlike other livestock owners, have few options other than forages to use to meet their horse’s nutritional requirements. 

However, there are management practices that can help horse owners ride out high feed prices:

  • Horse owners should take a critical look at equine body condition and maintain a body condition score of 5 (on a scale of 1 to 9).
  • Horses that maintain their weight on forage-only diets do not usually require any concentrate (grain).
  • A well-formulated ration balancer (concentrated vitamin and mineral mix) will ensure that vitamin and mineral needs are being met when dried hay is the sole dietary component.  Even the best, nutrient-dense hay will be deficient in essential vitamins and minerals, including vitamin E, copper, zinc, iodine, selenium and manganese (in alfalfa hay).

While all forage offered to horses should be free of dust, mold, weeds, and foreign debris, the nutrient density of the forage offered can vary depending on the type of horses being fed. Forage selection should be based on horse needs, as there is no one forage best suited for all classes of horses.

  • For example, providing nutrient dense forage like vegetative alfalfa hay to ‘easy keepers’ can create obesity issues; however, that same hay would be a good option for a performance horse with elevated nutrient requirements.
  • Have hay tested for quality to help determine how much and what type is best to feed to individual horses.
  • Keep in mind that higher quality hay usually demands a premium price and such hay is not needed by all groups of horses. 
  • Finally, older hay, if stored properly, is usually a great option for horses. 

Plan ahead and know how much hay you need. Horses eat roughly 2 to 2.5% of their body weight in feed (hay plus grain) each day.  For example, an average 1,000 pound horse will eat around 20 to 25 pounds of feed daily, plus water. Weighing the amount of feed offered will help to avoid over-feeding. 

When calculating hay needs, make sure to account for wasted hay. In a recent study conducted by the University of Minnesota, feeding round-bales to horses without a round-bale feeder resulted in 57% waste, while using different feeders ranged from 5 to 33% hay waste.  Although feeders do cost money, all round-bale feeders tested paid for themselves (due to reduced amounts of waste) in less than 10 months with hay valued at $200/ton.  A Texas study found that when horses were fed in a box stall, waste from feeding small square bales off the ground was 7% compared to only 1% waste when hay was fed in a feeder.  Using a feeder, regardless of bale-type, is essential to reducing waste and stretching your hay supply. 

Finally, have a good working relationship with a hay supplier to ensure a consistent and reliable source of hay.  Consider adding hay storage space to reduce the effects of price and seasonal fluctuations.  For example, hay is sometimes more expensive in the winter vs. the summer.  Buy hay early (do not wait for second or third cuttings) and budget for the price increase by re-evaluating how many horse you can afford to feed.

Hay Shortage Has Horse Owners Looking at Alternatives

Severe drought leaves hayfields and pastures brown and dry, and animal owners searching for replacement options.

Following the most extensive drought in 25 years, horse owners are facing hay shortages, increased prices and pastures in poor condition.1 We asked an equine nutrition expert about alternatives to feeding hay and what horse owners can do to help fill the gap left by these unusual and difficult conditions.

To get a complete picture of why hay is important to horses’ diets, Jolene Wright, Consumer Service Specialist, Nutrena, responded to some commonly asked questions.

Q. What does hay in a horse’s diet provide?

A. Hays and forages make up the majority of a horse’s diet and provide necessary complex carbohydrates they need, as well as protein and vitamins and minerals. Complex carbohydrates include hemicellulose, cellulose and lignin. These complex carbohydrates form in the cell wall in plants and provide fiber in the horse’s diet.

Q. How much hay does a horse need?

A. Horses require one to two percent of their body weight in forage daily, depending on their activity level and life stage. For a 1,000-pound horse, that would translate to 10 to 20 pounds of hay per day. Growing, breeding and working horses need additional supplementation to meet daily nutrient requirements.

Q. Is any hay okay, or are there things a horse owner should look for when choosing hay?

A. Horse owners should always seek out good quality hay. If it is coarse and stemmy, it’s a sign that the hay was baled when it was too mature and has high levels of lignin, which is not readily digested and has no nutritional value. This can increase the risk of gastric disturbances and distension of the digestive tract.

Q. Why has the drought impacted the hay crop?

A. When there is insufficient rain, the plant doesn’t get enough growth to cut at the proper stage for optimum nutrient levels. Cutting and baling hay at the proper nutrient stage varies from one type of forage plant to another and is also dependent on the climate and weather.

Q. What are some alternatives if I can’t find good hay that’s affordable in my area?

A. First, because hay provides long-stem forage which is ideal for the  horse’s digestive system, it is better to stretch the existing hay source instead of feeding all the hay first and then switching to a hay replacement product. There are many products available that can provide the fiber, protein, and vitamins and minerals a horse needs every day. Other forage options include hay cubes, hay pellets, compressed hay, chopped hay in bags and complete feeds with high levels of fiber that can be fed as a sole ration.

Q. Is there anything I need to do when adding one of these replacement type feeds to my horse’s diet?

A. It’s best to consult with your veterinarian to ensure a seamless transition. Then, make the changes gradually over seven to 10 days, following recommended feeding rates for the horse’s individual weight and activity level.

Q. In warmer climates where the grass doesn’t go dormant, can that make up for a lesser amount of hay?

A. Winter pasture can provide a level of energy, protein, vitamins and minerals. The quantity and quality of winter pasture will determine the amount of additional hay or hay replacement type product that a horse will need. Too many horses on a small amount of pasture will reduce the amount available to the horse and can deplete nutrient yield. Horse owners can get the suggested minimum number of acres per horse from the local agriculture extension agent for their specific area. For horses on winter pasture, it’s important for the horse owner to assess the body condition score of the horses and monitor their body condition through winter months. This will help determine if they are getting enough dry matter intake from winter pasture.

 

Jolene Wright has a master’s degree in Animal Science from West Texas A & M University, a bachelor’s degree in Agricultural Business and Equine Industries from West Texas A & M, and two associate degrees in Equestrian Science and horse Science Technology from Black Hawk College. Wright is a two-time American Quarter Horse Association (AQHA) World Champion and was a member of the West Texas A & M and Black Hawk College AQHA World Championship Horse Judging Team, West Texas A & M National Reining Horse Association Championship Horse Judging Team and West Texas A & M National Champion Equestrian Team.

©2013 Merial Limited, Duluth, GA. All rights reserved. EQUILGN1232

1United States Department of Agriculture. U.S. Drought 2012: Farm and Food Impacts. Available at: http://www.ers.usda.gov/topics/in-the-news/us-drought-2012-farm-and-food-impacts.aspx. Accessed November 20, 2012.

Changing Hay Sources for Horses

As a horse owner, I have moved quite a few horses around and recently moved my gelding to a new boarding facility, so thought this would be a good opportunity to share one aspect of my experience. 

To help maintain as much consistency in his routine as possible, I made sure that I had 2 weeks’ worth of hay to take with me to help keep his diet consistent throughout the move and to allow for a gradual transition to the new hay. 

When I told the barn managers at the new facility that I was bringing a few bales of hay over, they seemed a little surprised at this and told me not to worry about it, because they had really high quality hay.  I asked them if they would recommend a sudden change in a horse’s grain ration, and immediately they said of course not, due to colic risk. I replied, “Then why would you switch their hay cold turkey, when it makes up 60 – 70% of the horses diet?” and watched their expressions as they realized the point I was making.

As a result, along with keeping his grain ration and meal times consistent with the previous routine, a gradual transition from the previous hay to the new hay was done over a 2 week period.  For the first couple of days he received his “old” hay only, and over time we incrementally replaced a small portion of his “old hay” with the “new hay” so that at 2 weeks post-move, he was completely switched over without any problems or decline in performance. 

As horse owners, it is important to keep in mind that ANY sudden changes in diet, including fresh pasture and hay, can disrupt the environment in the gut where communities of microbes reside.  Consequently, this disruption in the microbial population and digestive process can put the horse at risk for GI upsets (e.g. excessive gas production, colic, diarrhea, discomfort, etc.). The energy and nutrient content in hay can vary drastically depending on the plant species, geography, soil conditions, plant maturity at harvest, climate conditions, baling and storage methods, etc.  Even hay that comes out of the same field from consecutive cuttings can have large differences in quality and nutrient content that should be considered. 

It takes approximately 3 weeks for the microbes in a horses gut to adapt to dietary changes, thus making slow, gradual transitions over a 2 – 3 week period important to help prevent GI upset.  When it isn’t possible to make a full two week transition, then allow for as much of a gradual transition as possible even if is only over 2 – 3 days.  Providing dietary pre- and probiotics can also help support gut microbes through dietary changes especially if they are rapid.

Flash Fred – Our Inherited Horse

We inherited Flash Fred (my daughter has a creative naming process) from a friend of ours. This horse was slowing down in his old age and could no longer keep up with the rigorous lifestyle required on a full scale cattle ranch. In return for a good place to live out his last years we obtained this 20 year old (give or take a few years) sweet and gentle gelding for our girls. For us it was the perfect arrangement.

The horses that help our kids love horses are truly priceless.

Fred arrived in the middle of July and he was in surprisingly good body condition; I rated him about a 4.75. The problem was, we didn’t know anything about what he had been eating or what his previous history was, other than when we picked him up he was in a partial drylot but had just come in off of dryland pasture.

We decided to start Fred off slow. We had some irrigated grass pasture that we wanted to utilize but we didn’t want to turn him loose on it until we saw how he handled feed. For the first week he stayed in a drylot pen at our barn – he had plenty of room to wander around and get used to his new surroundings. We also gave him free choice plain white salt and plenty of clean, fresh water. For feed he got 2% of his bodyweight in medium quality grass hay and a ration balancer with a full vitamin and mineral package. He tolerated all this well (he also tolerated our 2 and 4 year old pretty well, which was great news!), so after the first week we worked on turning him out to pasture.

This was a slow process – many times new horses have a long history that new owners know nothing about: a tendency to colic, a predisposition to laminitis, allergies to certain leaves or weeds,  and the list goes on and on.

We didn’t want to take any chances with Fred, so his first taste of freedom in the irrigated green grass was a measly 20 minutes. He looked at me like I was crazy when I caught him right back up and put him in his pen! The next day he was out for a little bit longer, and gradually as the days went by we increased his time on grass by 20 minute increments until we had a good idea that he was doing well and not having any digestive upsets. To get him on a full day’s turn out took over two weeks – but keeping him healthy was definitely worth it. We continue to make sure that he always has access to clean, fresh water, plain salt and we give him a small flake (about 5 lbs.) of hay when we bring him in at night along with the maintenance ration of balancer. We score his body condition once a month, and so far the grass is agreeing with him! 

Today Fred is thriving – he is enjoying his relaxing grass pasture and our little girls are enjoying him! As the weather turns cold and the grass goes away, we will get him going on a senior type feed – so stayed tuned for that journey!

All Flakes of Hay are Not Created Equal

I was called out to farm to review a horse that had started to lose weight.  The owner explained to me that the horse had been diagnosed with ulcers, so her vet recommended alfalfa hay. She purchased some nice quality second cutting, and had the test results which showed the hay to be exceptional quality, and containing 1Mcal (1000 calories) per pound. Thus, she could not figure out where the hole in the feeding program was that was causing the horse to lose weight. 

In review, her horses diet was calculated at 21.5 Mcal per day, based on his work schedule and body condition score:

  • 4 flakes of timothy hay per day
  • 4 pounds of grain  per day

Since the horse weighed in at 1000 pounds, we chose to go with 2% of his body weight per day in forage, or 20 pounds.  The old hay had tested at 800 calories per pound. We balanced the diet with 4 pounds of grain at 1430 calories per pound, or 1.43 Mcal.

  • Forage = 16 Mcal
  • Grain = 5.7 Mcal
  • Total = 21 .7 Mcal

The owner explained that she was feeding the same amount of hay as before, and since it was such good quality, it had to be a grain problem.

When we calculated his old diet, each flake of hay averaged 5 pounds each.  That was how we determined 4 flakes would reach the 2% or 20 pound feed rate.  I asked if she had weighed the new hay, and she admitted she had not done so yet.

To her surprise, when we weighed several flakes, they all averaged 3 pounds per flake.  When I showed her the math, the problem was obvious:

  • 1 Flake timothy hay 5lb@ x 4 flakes per day = 20 pounds per day x 800 calories = 16Mcal  (16,000 calories)
  • 1 Flake Alfalfa hay 3lb@ x 4 flakes per day = 12 pounds per day x 1000 calories = 12Mcal (12,000 calories)

With that simple change in hay, she had cut her horse’s caloric intake by 4,000 calories per day over the past month. Armed with this new information, adding more flakes of hay to the daily ration put the horse right back on track.